| Names | |
|---|---|
| Preferred IUPAC name | 3-Aminophenol |
| Other names | m-Aminophenol 3-Hydroxyaniline meta-Aminophenol 1-Amino-3-hydroxybenzene m-Hydroxyaniline |
| Pronunciation | /ˈæm.ɪ.nəʊ.fiː.nɒl/ |
| Identifiers | |
| CAS Number | 591-27-5 |
| Beilstein Reference | 1209220 |
| ChEBI | CHEBI:17618 |
| ChEMBL | CHEMBL1402 |
| ChemSpider | 579 |
| DrugBank | DB04209 |
| ECHA InfoCard | 100.051.542 |
| EC Number | 205-481-9 |
| Gmelin Reference | 82231 |
| KEGG | C02551 |
| MeSH | D02.241.081.277.352 |
| PubChem CID | 13411 |
| RTECS number | BX3430000 |
| UNII | Q364I077FK |
| UN number | UN2512 |
| Properties | |
| Chemical formula | C6H7NO |
| Molar mass | 109.13 g/mol |
| Appearance | White to light brown solid |
| Odor | Ammonia-like |
| Density | 1.22 g/cm3 |
| Solubility in water | Soluble |
| log P | 0.33 |
| Vapor pressure | 0.001 mmHg (25°C) |
| Acidity (pKa) | 9.8 |
| Basicity (pKb) | 4.74 |
| Magnetic susceptibility (χ) | -63.0 × 10⁻⁶ cm³/mol |
| Refractive index (nD) | 1.640 |
| Viscosity | 1.20 cP (20°C) |
| Dipole moment | 1.35 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 106.2 J·mol⁻¹·K⁻¹ |
| Std enthalpy of formation (ΔfH⦵298) | -20.4 kJ/mol |
| Std enthalpy of combustion (ΔcH⦵298) | -1575 kJ·mol⁻¹ |
| Pharmacology | |
| ATC code | D03AX04 |
| Hazards | |
| Main hazards | Harmful if swallowed, causes skin and eye irritation, may cause an allergic skin reaction. |
| GHS labelling | GHS02, GHS07 |
| Pictograms | GHS07 |
| Signal word | Warning |
| Hazard statements | H302, H315, H319, H334, H335 |
| Precautionary statements | Precautionary statements: P261, P264, P271, P273, P280, P302+P352, P304+P340, P305+P351+P338, P312, P330, P337+P313, P362+P364, P405, P501 |
| NFPA 704 (fire diamond) | 2-2-0 |
| Flash point | 161°C |
| Autoignition temperature | 430 °C |
| Lethal dose or concentration | LD50 oral rat 800 mg/kg |
| LD50 (median dose) | LD50 (median dose): Oral rat LD50 = 800 mg/kg |
| NIOSH | UR0800000 |
| PEL (Permissible) | Not established |
| REL (Recommended) | 0.02 mg/m³ |
| IDLH (Immediate danger) | Unknown |
| Related compounds | |
| Related compounds | 2-Aminophenol 4-Aminophenol Aniline Resorcinol |
| Property | Manufacturer’s Technical Commentary |
|---|---|
| Product Name | 3-Aminophenol |
| IUPAC Name | 3-Aminophenol |
| Chemical Formula | C6H7NO |
| CAS Number | 591-27-5 |
| Synonyms & Trade Names | Synonyms include meta-Aminophenol and m-Aminophenol. Common industrial references may align with process routes or origin, such as "m-Aminophenol (German process)" or equivalents tied to aniline or nitrobenzene starting material. |
| HS Code & Customs Classification | For industrial shipments, 3-Aminophenol is classified under HS Code 292229. The 2922 series covers aminophenols and their derivatives. Country-specific digits or regulatory overlays may apply, determined by end-use, purity, and declared grade at import/export declaration. |
Manufacturing 3-Aminophenol starts by selecting the right synthesis route—most commonly reduction of m-nitrophenol or amination of resorcinol—driven by desired product grade, downstream processing efficiency, and feedstock cost fluctuations. Batch consistency depends on parameters such as catalyst activity, temperature uniformity, and raw material quality.
Applications set the required impurity thresholds and color requirements. For dye intermediates, low metal and by-product levels are necessary; for pharmaceutical use, more nuanced control of trace amines and isomers is required. Process controls focus on minimization of regioisomer formation, residual solvent content, and side-reactions leading to polymeric impurities.
HS Code allocation is not purely formula-based—industrial shippers must match code to declared use and country-specific guidance. Customs authorities inspect declarations for accuracy, checking dossier information for grade designation and processing history.
The suitability of 3-Aminophenol for an application hinges on both molecular purity and the presence of trace process-related residuals. Storage and handling depend on grade and packaging type; highly sensitive formulations may require additional inertization or humidity control. Downstream customers rely on traceability and batch characterization as laid out by the manufacturer’s certificate of analysis, which should reflect analytical method validation and plant-specific process qualification.
3-Aminophenol occurs as a crystalline solid. Color can vary between white and light brown depending on grade, presence of trace iron, or byproduct contamination. In industrial shipments, odor is faint and phenolic, noticeable upon opening bulk containers. Melting and boiling points shift slightly by grade and due to polymerized or oxidized impurities accumulated in recycled or aged stocks. Density changes marginally with impurities and moisture content, influencing dosing in automated processes.
Chemical stability is sensitive to light and air during storage. Trace metal residues from process equipment can catalyze slow discoloration and degradation. In solution, 3-Aminophenol shows increased propensity for oxidative darkening, especially at alkaline pH or in metal-rich tap water. Formulation and downstream use require prompt application or nitrogen-blanketed storage to mitigate batch-to-batch color shifts.
Solubility in water depends on grade and pH control during product recovery. High-purity grades dissolve readily in deionized water, little residue forms when filtered at room temperature. Technical grades with unreacted isomer or dimer byproducts may yield hazy solutions, impacting dye formulation yield and clarity. Solubility in organic solvents such as ethanol or methanol is higher, aiding in certain specialty applications. Solution preparation requires attention to filtration, pH adjustment, and temperature control to prevent premature polymerization.
Grades vary to accommodate use in dyes, pharmaceuticals, and custom intermediates. Typical values depend on the intended application and regional standards. High-purity grades limit metallic and organic impurities more stringently, especially in pharmaceutical and photographic use.
Impurities arise from incomplete reactions and raw material quality. Most common residuals include 2-aminophenol, phenol, and oligomerized byproducts. Permissible impurity levels reflect customer or regulatory requirements; final targets are set based on end-use, such as dye synthesis or active intermediate incorporation. Advanced purification steps, such as recrystallization or activated carbon treatment, lower specific trace impurities to meet downstream performance needs.
In-house testing relies on HPLC, GC, and titration to quantify assay and impurity profile. For pharmaceutical or high-specification applications, batch release aligns with pharmacopeial or end-user standards, verified through validated analytical methods. Standard methods selected depend on region, industry segment, and product grade.
Raw material selection is based on the required purity and cost optimization. Principal precursors include nitrophenol and its isomers. Sourcing prioritizes consistent impurity profile and supply chain reliability to avoid batch variability from changes in raw phenol or ammonia sources.
Most industrial routes proceed through the reduction of 3-nitrophenol, using hydrogenation or catalytic reduction. Catalyst type, hydrogen pressure, and temperature impact impurity carryover and color development. Choice of route reflects access to hydrogenation facilities and preferred catalyst recycling protocols. Alternate pathways involve ammonolysis or rearrangement under specific regional conditions, mainly prioritizing local waste stream constraints.
Key control points include temperature profile during reduction, feed rates, and solvent handling to control byproduct formation. Downstream purification may include recrystallization, pH-adjusted washing, and filtration through activated carbon or ion exchange resins. Each stage targets specific impurities—unconverted starting material, catalyst residues, and color bodies.
Finished material undergoes multi-stage analytical verification. Batch-to-batch consistency relies on process adjustment in response to observed impurity trends. Acceptance criteria for release set according to defined grade and customer requirements. Internal standards align testing frequency, batch sampling, and retention protocols to usage context and region.
3-Aminophenol serves as a versatile substrate in electrophilic substitution, diazotization, and acylation reactions. Reaction pathway selection reflects downstream product requirements. For dye manufacturing, sulfonation and coupling occur under temperature, solvent, and pH regimes that control secondary isomerization.
Catalyst use, solvent choice, and precise temperature control determine product conversion and selectivity. For functionalization, acid or base catalysis adjusts reactivity. Typical operations target minimal side-product formation to enhance yield in subsequent syntheses.
Core downstream products include dyes, pigments, and pharmaceutical intermediates. Each route has unique side reactions; impurity control supports low-defect performance in high-purity applications such as electronics and specialty chemicals.
Storage requires protection from direct sunlight and air to minimize color darkening and oxidized impurity formation. Best-practice guidance includes hermetically sealed containers and dry, cool warehouses. In-process containers need gas blanketing or rapid turnover to avoid oxidative degradation.
Incompatible with reactive metals that catalyze decomposition or discoloration. High-purity grades are packed in non-metallic or lined drums to reduce contamination risk. For bulk storage, container lining and desiccant use depends on seasonal humidity and shipment duration.
Shelf life varies by grade and storage conditions. Degradation signs include color shift, odor intensification, and solution haziness. Material intended for critical applications undergoes periodic re-testing for peroxide or polymer contamination prior to use.
Classification depends on current regulatory status and laboratory-confirmed hazard evaluation. Observed hazards typically include skin and eye irritation, with toxicity varying by contact method and exposure duration. Packaging and labeling reflect current regional GHS standards.
Processing and handling protocols address relevant inhalation, skin, and eye exposure. Gloves, goggles, and local exhaust ventilation form the baseline for safe plant operation. Inhalation or accidental ingestion requires immediate action guided by site safety data and medical recommendations.
Worker exposure limits reflect national or international regulatory standards and product grade. Toxicity data indicate dose-dependent effects in animal and in vitro models. In production sites, engineering controls maintain exposure within acceptable limits through containment, time-weighted air monitoring, and emergency protocols for spill response.
Production of 3-aminophenol follows demand signals from dye, pharmaceutical, and agrochemical sectors. Manufacturing utilizes batch and continuous processes, most often starting from nitrophenol via reduction. Installed capacity fluctuates year-to-year based on order cycles and campaign scheduling. Grade selection—technical, high-purity, or pharmaceutical—determines which reactors and purification assets engage during production windows.
Plant availability can vary due to turnarounds linked to catalyst replacement or plant upgrades, as well as raw material procurement. Lead times depend on queue position and customer QA release requirements. Typically, technical and dye grades offer shorter cycles, while higher-purity grades require longer isolation, filtration, and documentation steps.
Orders for technical grade can move from production to shipping within weeks, contingent on feedstock arrivals. High-purity or validated grade requests lengthen the manufacturing-to-shipment window due to incremental purification and mandatory analytical validation. MOQ aligns with campaign yield efficiency: technical grades—one pallet; high-purity/pharma, full drum or multi-drum, to match campaign economic lot size.
Packaging configuration depends on grade, purity, and transport risk profile—fiber drums, HDPE drums, lined metal containers, or custom bulk solutions for very high-volume purchases. For downstream applications sensitive to trace metal or moisture ingress, liner specification becomes a determining discussion point with procurement and R&D teams.
Shipping format reflects local chemistry regulations (ADR, DOT, IMDG, IATA) and warehouse site capabilities; shipments can be EXW, FOB, CIF, or DDP by customer negotiation. Payment is typically LC for first transactions, net terms on established relationships, but specifics vary according to buyer profile and order scope.
Raw material input cost remains subject to volatility—key drivers include pricing trends for phenol, aniline, and hydrogen, with energy surcharges prominent during periods of global fuel supply instability. Nitration and catalytic reduction steps contribute both direct cost and potential byproduct management expenses. Changes in national chemical policy (such as environmental control or VOC limits) also directly impact production overhead for all grades.
Grading (technical vs. high-purity vs. pharmaceutical) stems from primary impurity classes: isomeric aminophenols, nitro residues, trace metals, and water content. Higher-purity and certified grades require auxiliary purification (often including distillation, crystallization, or chromatography), disciplined batch segregation, and independent lot-specific release protocols. These requirements introduce incrementally higher production costs. Each lot’s price reflects its finished certificate of analysis and the degree of downstream qualification.
Upstream volatility in phenol and aniline—driven by refinery economics, derivative demand (such as caprolactam, MDI, and rubber chemicals), and global trade policy—directly transmits to aminophenol pricing. Feedstock purity, allocation, and logistics capacity further complicate long-term contracts; energy cost surges, as observed during European gas crises, add fuel cost pass-through. Environmental levies in Asia and EU further move operating cost benchmarks, particularly for process plants without integrated byproduct management.
Grade demands direct the scope of purification and corresponding price differentials. Technical grade, with relaxed specifications for isomer and trace metal content, serves bulk dye and agricultural intermediates. High-purity grades demand enhanced analytics, dedicated process segments, and advanced packaging—commanding higher premiums to reflect qualification and release cost structure. Regulatory-certified batches for pharmaceutical and food chemical sectors involve stringent batch record review, typically only released upon full compliance and independent QA sign-off. Packaging further differentiates price: certified containers, moisture-barrier liners, and serialized seals add incremental cost.
Global supply reflects a strong Asian manufacturing base, concentrated in China and India, with added export from factories supporting local pharmaceutical and dye sectors. European and US facilities focus on high-purity, specialized grades driven by regulated market demand. Market balance fluctuates based on major downstream sector activity—peaks align with generic drug production campaigns and textile dye launches.
China and India provide the principal volume for technical and industrial grades, benefitting from competitive feedstock positioning and established backward integration. Compliance-orientated markets (US, EU, Japan) prioritize traceability, supply chain transparency, and multi-step batch release, with cost structure reflecting QA intensity and regulatory scrutiny. Price spreads between regions close during periods of ocean freight normalization but widen under trade friction, regulatory changes, or energy shocks.
Looking ahead to 2026, price movement will ride on several industrial factors: feedstock price trends (phenol, aniline), energy input evolution, and environmental compliance escalations, especially in core manufacturing regions. Demand growth for dyes, specialty chemicals, and pharma intermediates supports baseline consumption, but any regulatory tightening on effluent, VOC, or hazardous reagent controls may squeeze production and elevate delivered cost, especially for high-purity/regulated grades. Supply-side shocks or tariff policy changes may amplify volatility. Expect globally indexed, graded price differentiation to persist, with sharper local variance tied to compliance cost trajectory and trade logistics.
Forecast reflects direct supply chain experience, consultation with procurement teams, market intelligence from chemical trading exchanges, public tender activity, and aggregate customs reporting. Grade-specific market dynamics incorporate customer feedback from QA and regulatory audits, as well as batch release history.
2023-2024 brought new scrutiny for Chinese and Indian plants regarding wastewater management and VOC abatement for nitration lines. Several major producers have accelerated transition to closed-loop effluent systems, increasing initial capex but reducing long-term environmental penalty exposure. Freight normalization post-pandemic saw some cost reset; however, container rate spikes remain a risk factor.
Europe and North America continue to tighten documentation requirements for multi-use organic intermediates. Recent amendments in REACH and EPA chemical reporting raise the documentation bar for grade segmentation and batch traceability. Some Asian producers have opted for third-party auditing and external QA certification to maintain access in regulated markets. Pharmaceutical end-users increasingly request qMS-compliant batch and production records as transactional prerequisites.
Production and QA teams adapt by recalibrating campaign and buffer stock strategies, raising in-process control stringency, expanding traceability, and investing in analytical capacity. Internal audits, revalidation of authorized suppliers, and constant regulatory monitoring aim to minimize operational risk from compliance deviation. Increased customer dialogue at specification definition and ongoing logistics contingency planning—now common practice—support supply predictability and continuous qualification in an evolving environment.
3-Aminophenol flows through a range of industries due to its reactivity and functional compatibility in downstream synthesis. The most frequent sectors include dyes and pigments, pharmaceuticals, agrochemicals, and fine chemicals. In our experience as producers, the main decision driver for grade selection is shaped by process sensitivity, impurity tolerance, and required analytical documentation.
| Industry | Typical Application | Grade Options | Key Parameters by Application |
|---|---|---|---|
| Dyes & Pigments | Precursor for azo dyes, hair dye intermediates | Standard, Technical |
Color stability, residual aniline content, homogeneity during dissolution Pigment applications tolerate broader impurity ranges than hair dyes |
| Pharmaceuticals | Synthesis of acetaminophen (paracetamol), drug intermediates | Pharma, High Purity |
Total organic content (TOC), heavy metals, residual solvents, batch traceability API precursors must align with pharmacopeia expectations; impurity profile is checked closely before release |
| Agrochemicals | Herbicide and pesticide synthesis | Technical, Standard |
Controlled nitro compound residues, solubility, cost-driven batch sizes Slightly more flexibility in minor impurity content compared to pharma |
| Fine Chemicals & Others | Custom organic synthesis, resin modifiers | High Purity, Custom Spec |
Targeted impurity limitation, particle size for solid grades Process adaptability plays a stronger role for R&D labs |
Each project benefits from a clear statement of purpose—dye manufacturing, API synthesis, resin modification—so technical teams align grade options based on final use.
Regulatory frameworks such as pharmacopeia content, food contact limits, or REACH obligations often push selection toward higher documentation and tighter impurity control. For API needs, expect end-to-end traceability and audit-ready batch records.
Purity thresholds usually breed the widest negotiation between user and manufacturer. Hair dye and pharma customers tend to require close definition of organic and inorganic impurities, sometimes exploring multiple process routes to tune the impurity matrix. Technical and industrial segments operate within broader limits, but even here, downstream equipment protection and waste management steer requirements.
Large-scale agrochemical and pigment users often favor consistency and cost balance over maximum purity. Pharmaceutical or R&D customers focus on reproducibility, specification detail, and batch-sample integrity rather than just volume-driven pricing.
Process and formulation testing with actual batch samples reveals unsuspected incompatibilities with solvents, catalysts, or auxiliary agents; this step is a standing control point before committing to full-volume purchase.
Grade differences trace directly to control points in synthesis and purification. Raw material choices (e.g., aniline vs. nitrobenzene routes) set impurity precursors—each approach generates distinct residual profiles during reduction or amination. Post-synthesis purification, whether via crystallization, solvent extraction, or column processes, sets the final grade’s attainable purity and cost structure. During production, in-process sampling captures batch deviations; out-of-spec material rarely proceeds to final packing.
Release specifications receive review by both production and QA. Technicians document batch parameters—moisture, appearance, assay, impurity markers, color index—per customer requirements. For pharma or food applications, exact release limits become part of each batch’s CoA. Industrial customers will often accept a range provided by historical batch data unless their use case flags a key parameter.
Product storage and packaging choices align to grade: pharma grades receive stricter packaging protocols to exclude cross-contamination, atmosphere-sensitive packaging, and tamper-evident closure; technical grades are packed for bulk integrity with emphasis on moisture and physical protection.
In our 3-Aminophenol manufacturing facilities, process and quality traceability tie directly to our production lines. Production teams operate under integrated quality management systems, with third-party certification on-site covering core ISO standards relevant to chemical manufacture. System audits and re-certification align with mandatory intervals, maintaining internal oversight in documentation, staff training, and environmental controls. These certifications support both product consistency and regulatory expectations for industrial buyers.
Depending on region and intended application, our 3-Aminophenol batches may reference independent external audits, customer-mandated standards, and relevant regional registration (where applicable). Batch release for technical or pharmaceutical grades draws on more detailed analytical records, with grade selection reflecting requirements for purity, contaminant controls, and trace components. Application-driven compliance such as REACH or other local chemical regulations is supported by upstream supply transparency and end-use registration. Final documentation will always indicate the grade, regulatory framework, and any customer-agreed protocols followed for the batch.
Every shipment is accompanied by tailored certificates of analysis and conformance. Analytical reports specify analytical methods, instruments, and test frequency, recorded per lot. Where customers request, supplementary data such as impurity profiles or trace metal content can be provided. Analytical parameters are not static; ongoing internal review of test items depends on batch history, raw material input variation, and process route. Batch documentation is archived with traceable formulation and dispatch records. Document management aligns with customer confidentiality and regulatory data retention periods.
Production scheduling for 3-Aminophenol operates with forward visibility into raw material supply chains. In the event of feedstock market volatility or external disruptions, buffer stocks and tiered procurement keep output steady. Customers requiring routine volumes benefit from production slot reservations, while short-term or project-based procurement leverages flexible campaign scheduling. This structure supports both single-site draws and multi-location downstream integration.
Three-layered capacity planning—core base-load output, modular line expansion, and contingency reserve—manages cyclic demand patterns in the 3-Aminophenol market. Transition between technical and higher-purity grades is set by validated cleaning and verification protocols, reducing risk of cross-contamination. Batch records and supply projections are routinely shared with long-term contract partners. Supply scenarios in response to market events are managed in direct dialogue with key downstream partners.
Prospective buyers and R&D partners may request samples at various specification points. Sample requests require clear application disclosure to assign the suitable grade and packaging method. The technical team coordinates sample preparation following established retention, labelling, and shipping controls, especially for sensitive applications with added documentation or transport restrictions. Stability and analytical records for each sample ensure traceability.
Several procurement modes are open for negotiation: spot purchasing, rolling forecasts, multi-year contracts, and volume-triggered price adjustments. Customers in regulated markets can align supply terms with batch approval timelines or introduce co-development frameworks for specialized grade development. Direct communication with account and technical teams ensures adaptation of logistics, documentation, packaging, and inspection schedules to evolving business needs. Change management protocols activate for shifts in grade, packaging, or process route, reducing risk of supply chain interruptions.
Recent project demand in fine chemicals continues to drive attention toward 3-aminophenol, with focus on applications in pharmaceutical intermediates, dye synthesis, and agrochemical formulations. Research teams prioritize identifying routes that reduce nitro and byproduct footprints during aniline ring-amination. Observations from active R&D lines include efforts to improve regioselectivity, mitigate ortho/para-isomer challenges, and reduce secondary color-forming impurities in downstream dye batches.
The expansion into specialty polymers and advanced material segments increases the number of tailored requests manufacturers receive. Polymeric film manufacturers and electronics resin formulators have shown growing interest in higher purity, low-residual metallic ion versions of 3-aminophenol for use in specialty coatings and conductive polymers. Pharmaceutical R&D continues to explore 3-aminophenol-derived intermediates for analgesic and antimicrobial synthesis pipelines.
Low-level impurity management remains the central production challenge, as isomeric and oligomeric byproducts impact downstream chromatic and pharmacological performance. Laboratories have documented breakthrough process intensification steps, such as continuous hydrogenation and selective crystallization, to achieve improved batch reproducibility and reduced waste stream generation. Selection of catalysts and control of reactor residence time play direct roles in reducing tar and resinous side products during amination. Batch consistency often hinges on precise calibration of input aniline purity and real-time monitoring of pH drift.
Orders from pharmaceuticals, dye, and electronics material segments have trended upward, with a notable spike in pharmaceutical-grade interest. Markets in Asia-Pacific and Europe indicate a move toward higher-grade material for regulated end uses, and multi-ton volume off-take contracts increasingly set specifications for trace impurities. End-users report demand fluctuations with regulatory cycles and raw feedstock availability, driving continuous negotiation on lead time and batch size.
Production plants are updating reactor system controls integrated with advanced process analytics, targeting real-time feedback to reduce out-of-spec batches. Aside from classic batch methods, implementation of semi-continuous and flow chemistry systems has attracted pilot project investment, aiming at cost, throughput, and waste reduction. Adoption of automated solvent recovery and closed-effluent loops supports more stable environmental compliance metrics. Market-driven evolution favors modular plant designs that enable flexible process adjustment according to purity and throughput contracts.
Raw material sourcing shifts toward low-residual aniline streams sourced from responsible upstream partners. Manufacturing lines now evaluate catalyst recovery, lower emission reaction solvents, and heat integration to improve energy balance. Waste stream audits focus on reducing nitroaromatic effluent and improving recovery rates for unreacted phenolic intermediates. Occasionally, biomass-based feedstock concepts are under investigation, but operational feasibility and purity remain active topics within technical working groups.
Direct manufacturer technical teams support customers by providing troubleshooting for process integration, especially where trace impurities or byproduct carryover affects critical downstream reactions. Application chemists share batch-to-batch performance data, tailored to each user’s end-use, and coordinate on analytical method harmonization where customer laboratories require specialized testing.
Support teams collaborate with downstream formulators to adjust particle size distribution and optimize product flow for blending and homogeneity. Recommendations for handling and dosing depend on specific material handling systems and targeted physical state (crystalline, solution, or slurry). Where process-specific grades are required, manufacturers assess and modify purification and drying steps to match end-user technical files, often conducting joint trials for validation under production-scale conditions.
Every batch undergoes a review for conformity to customer-agreed specifications, with records available for cross-reference during complaint investigation or change control. Technical staff maintain open lines for rapid batch traceability and real-time incident escalation. Manufacturer labs offer sample retention and re-testing for dispute resolution, and long-term partners receive proactive updates regarding process modifications, impurity profile changes, or regulatory shifts impacting supply.
3-Aminophenol serves as a fundamental building block for a variety of chemical processes in demanding industrial sectors. Our facility produces 3-Aminophenol in dedicated, controlled reaction lines, maintaining strict oversight throughout every production stage. Each batch receives extensive in-house testing using HPLC and GC methods to secure a defined content of the active ingredient and low impurity profiles. Production records and sample retention protocols allow us to verify compliance with customer-referenced standards over time.
Downstream manufacturers working in dye intermediates, pharmaceuticals, and specialty chemicals rely on 3-Aminophenol as a key raw material. In dye manufacturing, it acts as an essential precursor for the synthesis of azo dyes and hair dye formulations. The pharmaceutical sector incorporates this compound into analgesic and antipyretic preparations, taking advantage of the aromatic amine group. Fine chemical producers also employ 3-Aminophenol in the construction of varied molecular scaffolds, especially where hydroxyl and amino functionalities are both required in the ortho position.
Extensive production experience enables us to diagnose the factors that impact batch reproducibility. We monitor raw material feedstock, reaction parameters, and purification profiles for every lot. Quality staff run each batch through rigorous analysis at multiple process points. This vigilance avoids unplanned variation and supports ongoing supply chain qualifications for business clients.
We manage our own packaging lines, calibrating for drum, IBC, and custom-packed requirements that respond to both regulatory compliance and user safety expectations. Palletization and container loading leverage direct supervision and established export standards. We scale supply to match project ramp-ups, seasonal requirements, and urgent replenishment. Our logistics team arranges timely movement via preferred carriers, coordinating with buyers on incoterms and document needs.
Chemical users deploying 3-Aminophenol at industrial scale often encounter issues in handling or process compatibility. Our technical staff answers real-world inquiries regarding solubility, filtration residues, and blend stability based on actual plant experience. Support spans sample availability for prequalification, guidance with analytical parameters, and troubleshooting of interfacing substances during downstream production.
Manufacturers, procurement managers, and distributors looking to secure stable 3-Aminophenol supply benefit from working directly with the producer. Control over synthesis, packaging, and shipment provides planning predictability and leverages cost advantages at scale. Reliable scheduling, traceable batches, and technical access lower the risk profile compared to fragmented sourcing. Supply chain partners receive the stability necessary for both routine production and custom-formulated projects, reflecting practical knowledge and operational transparency from a committed manufacturing base.
Producing industrial-grade 3-aminophenol is more than running a standardized synthesis; every batch draws on years of accumulated process insight. Our long-term operational records show that two main sources lead to impurities in this product: starting raw materials and reaction side products. These have direct implications for downstream chemical synthesis, affecting reproducibility and, in some applications, final yield.
Unconverted aniline, as well as phenol, often appear in trace amounts. Isomers such as 2-aminophenol and 4-aminophenol form during the process, typically due to competing reaction pathways under non-ideal conditions. Depending on temperature or catalyst quality, minor by-products like nitroanilines or resinous tars can also build up, especially if process controls drift. Metals from reactor corrosion may contaminate certain lots, notably iron and copper, which require monitoring and targeted filtration. Our regular chemical analysis always focuses on keeping these unwanted components below industry-accepted limits.
We receive frequent feedback—from dye, pharmaceutical, and specialty resin manufacturers—that even modest isomeric contamination can shift color shades or create separation challenges. Unreacted phenol or aniline hinders coupling reactions, increasing purification steps or causing clogging in automated lines. Minor nitroaniline impurities tend to introduce unpredictable reactivity, which proves especially problematic in multi-step synthesis or catalyst-driven reactions. Metals, even at low ppm levels, can poison sensitive catalysts or trigger unwanted side reactions, hiding yield losses until analytical review. These direct consequences illustrate why our batch records, in-process sampling, and post-reaction extractions target not just percentage purity but key functional impurity thresholds.
Our technical team relies on refined distillation, controlled crystallization, and specialized solvent washes to trim impurity profiles right at the source. Regularly calibrated analytical equipment—HPLC and GC-MS—provides on-the-spot updates to operators for real-time adjustment. Investing in corrosion-resistant reactor alloys has proven effective in reducing metal contamination, and we run periodic maintenance shutdowns specifically to check for upstream contamination or catalyst degradation. For customers needing extra-tight impurity specifications, our team supports with detailed batch documentation, sample retains, and customized purification options.
Consistency in 3-aminophenol purity is a result of discipline in sourcing, process, and final QA. Our customers depend on the integrity of each batch. We see fewer rejected lots and higher customer retention when we prioritize full disclosure—providing not only percentages, but also breakdowns of trace constituents present. These conversations shape our continuous improvement strategy, keeping production targeted to real-world synthesis requirements rather than arbitrary figures. For specialty applications, we can provide detailed impurity analysis reports and technical consultation to align with each customer’s process sensitivity.
At our manufacturing site, efficiency and reliability in supply come from practical experience—not just industry trends. 3-Aminophenol has become a vital raw material across several sectors, especially for dyes, pharmaceuticals, and specialty chemicals. Our operation focuses on giving end users confidence that every unit delivered meets strict consistency and quality expectations. Establishing standard pack sizes and minimum order quantities reflects actual production, logistics, and downstream process needs.
We pack 3-Aminophenol in strong, sealed fiber drums lined with polyethylene. Each drum holds 25 kg of product. Over the years, 25 kg has proven itself as an industry-recognized size—large enough for batch-based processors, but manageable for handling, inventory, and feedstock weigh-outs. This size also aligns well with the realities of global shipping and containerized freight, which means fewer touchpoints, reduced risk of material loss, and streamlined unloading when the shipment reaches your facility.
Industries demanding larger single-lot runs—such as pigment dispersion or pharmaceutical intermediates—may require volumes that go well beyond the single-drum format. For those cases, we palletize up to 500 kg per shipment. This improves workflow for end users by reducing the number of handlings per ton, while providing the traceability and sequestration needed for regulated operations. Bulk requests, including intermediate bulk containers, are also part of our capabilities when justified by production scale and regulatory guidelines.
Order volumes drive not just our daily production, but also how we optimize scheduling, raw material purchasing, and quality traceability. Our minimum order quantity for 3-Aminophenol is 100 kg. This threshold is a result of the balance between production best practices and the economics of chemical manufacturing. Running micro-batches or splitting drums introduces increased risk of cross-contamination, potential for mislabeling, and losses during transfer. By establishing 100 kg as our starting point, we can maintain batch integrity, reduce per-unit costs, and pass on those advantages to customers across markets.
Manufacturing at scale enables us to offer long-term, consistent supply. For customers running multi-lot processes, regular orders of 500 kg, one metric ton, or greater simplify their own inventory management and can give them leverage on commodity pricing. Our experienced logistics team has refined the delivery network to handle large-scale orders efficiently, including proper customs documentation, safe loading, and best-practice storage advice at the receiving plant.
Since our deliveries arrive directly from the factory, customers gain the assurance that handling protocols remain consistent from production to offloading. Any special requirements, such as pallet height restrictions or paperwork for regulatory audits, can be managed directly with our technical and logistics departments. We also keep a close eye on environmental compliance for bulk shipments, focusing on minimizing potential discharge and containment risks throughout transport.
Our long-term customers benefit most from factory-direct communication, not just for competitive pricing, but for technical know-how. We provide full specification sheets, certificate of analysis, and ongoing support for formulation or process troubleshooting. Order quantities and packaging standards were designed based on years of customer feedback, safety audits, and regulatory review by our own compliance team. By keeping the dialogue open, we adapt to genuine market needs rather than generic third-party standards.
Every step in our supply chain, from raw material sourcing to final packaging, is managed in-house, ensuring a consistent, reliable product supplied at pack sizes and minimum volumes shaped by real-world practice. If operational factors or project-specific needs require custom packaging, our plant managers and technical planners will engage directly, leveraging our in-house flexibility to meet those demands.
Handling and international shipment of 3-aminophenol demands thorough attention to regulations and safety standards right from our plant. We have spent years optimizing production and outbound logistics for this important intermediate. 3-aminophenol is widely used in dyes, pharmaceuticals, and polymers. Its global movement requires meeting chemical manufacturing directives, adhering to international transport guidelines, and staying compliant with evolving regulatory landscapes such as REACH in Europe and DOT in North America.
3-aminophenol ships as a solid. At our facility, we utilize robust packaging—usually fiber drums with polyethylene liners or heavy-duty bags inside sealed drums—because the material is hygroscopic and sensitive to light. Powder clumping, dust escape, and absorption of moisture can degrade quality, so we always focus on tight lids, layered moisture barriers, and clear labeling. We recommend cool, dry, well-ventilated storage areas away from oxidizers. Fire hazards increase when this compound contacts strong oxidizing agents, so dedicated storage keeps materials separated and the environment controlled to prevent accidental reaction or contamination. Our packing team measures lot-by-lot to ensure uniform weight and secure closure.
Shipping our product internationally involves more than just loading pallets and sending them to port. 3-aminophenol qualifies as a hazardous chemical under the UN 2811 code for toxic solids (organic, n.o.s.), meaning it travels subject to special handling protocols and documentation. In the United States, Department of Transportation (DOT) rules apply—hazard communication labels, placarding requirements for containers, and explicit papers for every truckload or container leaving the yard. Internationally, the IMDG (marine) and IATA (air) rules require strong primary and secondary containment with direct mention of the UN number and hazard classification. Our shipping department coordinates directly with forwarders who have experience moving Class 6.1 (toxic) materials, and we never consolidate with incompatible substances.
Each export consignment includes a complete Safety Data Sheet (SDS), Certificate of Analysis, and hazard declaration. Our internal compliance team updates every form according to the most recent shipment destination’s statute—meaning we regularly monitor regulatory updates in Europe, the USA, Japan, and South Korea. Port authorities and customs inspection stations often request proof of REACH registration for shipments into the EU. As REACH-registered manufacturers, we maintain all registration dossiers and provide them to importers, along with exposure scenarios if requested. We keep robust records of each registration number and update dossiers as tonnage thresholds are crossed or new uses emerge from our downstream clients.
Only direct manufacturers like us can manage traceability from reactor to pallet. Our materials never mix with other production lines, and batch records back every lot. We conduct periodic audits, both internal and at the warehouse, to ensure our chemical remains within specification until final delivery. Employees receive up-to-date HAZMAT training, and every shipment is double-checked for compliance before leaving our gate.We provide full regulatory support for our international partners. Each document is updated and customized as laws evolve. We also track container status until safe receipt at the destination, actively supporting safe offloading and local storage on request.Chemical manufacturing and supply continue to demand vigilance, technical expertise, and continual regulatory learning. Our hands-on approach reflects our commitment to quality, safety, and full compliance for every shipment, every time.
For product inquiries, sample requests, quotations or after-sales support, please feel free to contact me directly via sales3@ascent-chem.com, +8615365186327 or WhatsApp: +8615365186327
