|
HS Code |
117995 |
| Chemical Name | O-Aminophenol |
| Iupac Name | 2-Aminophenol |
| Molecular Formula | C6H7NO |
| Molar Mass | 109.13 g/mol |
| Cas Number | 95-55-6 |
| Appearance | White to light brown crystalline solid |
| Melting Point | 174 °C |
| Boiling Point | 164 °C at 15 mmHg |
| Solubility In Water | Moderately soluble |
| Density | 1.293 g/cm³ |
| Pka | 4.76 (phenol), 10.23 (amine) |
| Odor | Faint amino or phenolic odor |
| Refractive Index | 1.659 |
| Hazard Statements | May cause irritation to skin, eyes, and respiratory tract |
| Un Number | UN2512 |
As an accredited O-Aminophenol factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | O-Aminophenol is packaged in a 500g amber glass bottle with a tightly sealed cap, labeled with hazard and safety information. |
| Shipping | O-Aminophenol should be shipped in tightly sealed containers to prevent moisture and contamination. It must be protected from direct sunlight, heat, and incompatible substances. Label packages according to hazardous material regulations, and transport via approved carriers, complying with applicable local, national, and international shipping standards for hazardous chemicals. |
| Storage | O-Aminophenol should be stored in a tightly sealed container, in a cool, dry, and well-ventilated area, away from sources of heat, ignition, and direct sunlight. Keep it away from strong oxidizing agents and acids to prevent hazardous reactions. Properly label containers and use secondary containment to avoid spills. Handle with care, using appropriate personal protective equipment. |
Competitive O-Aminophenol prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please call us at +8615380400285 or mail to sales2@liwei-chem.com.
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Tel: +8615380400285
Email: sales2@liwei-chem.com
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Production of O-Aminophenol starts with our control over raw materials, reaction conditions, and purification methods. Everything comes together in-house, allowing our team to maintain batch-to-batch consistency and trace impurities. Our version of O-Aminophenol stands out because we monitor each stage and avoid shortcuts that dilute the integrity of the final product.
A practical chemist learns early that not all O-Aminophenol performs the same way in application. Some batches clog reactors, some disrupt analytical work, some waste operators’ time with color impurities or unpredictable melting points. Consistency matters. Over years of refining yields and optimizing our post-reaction treatment—especially with hydrogen peroxide and the handling of orthonitrophenol reduction—we established a method for producing a high-purity, crystalline O-Aminophenol that holds its performance in both lab-scale reactions and large manufacturing campaigns.
Our O-Aminophenol, typically produced as a white to pale brownish solid, meets a purity specification of ≥99%. The standard batch size can shift depending on demand, but attention to quality does not slide. Water content and iron content also draw scrutiny, as trace metals directly affect downstream applications, especially in dye synthesis or pharmaceutical intermediates.
We ship O-Aminophenol most commonly as a free-flowing powder. In early days, we encountered agglomeration issues—clumping that made dosing tedious—so we listened to our processing teams and adjusted our crystallization and drying sequence. The result is a product that pours easily, minimizing unnecessary operator exposure and simplifying mechanical transfer to reactors.
O-Aminophenol runs at the heart of many dye molecules and acts as a key intermediate for pharmaceuticals and photography chemicals. In hair dye formulations, users expect controlled reactivity; inconsistent material causes blurred coloring, unreliable shelf life, or batch failure. Pharmaceutical producers look to absorbable purity and verified stability data. Over the years, several clients shared process data with us when issues popped up, and it was almost always trace contaminants or oily residues that caused headaches—not actually O-Aminophenol, but what stuck to it. We took those reports to rework our filtration and drying processes, which now produce cleaner material with minimal oils. That’s why direct collaboration between the manufacturer and end user makes a marked difference.
Beyond dyes and drugs, O-Aminophenol fuels epoxy resin hardeners, rubber chemicals, and photographic developers. In each field, specific attributes top the requirement list. Some customers want a tighter particle size to dissolve quickly in solvents, while others monitor chloride ions or heavy metals that ruin sensitive catalysts. Because we manage granulation and purification steps ourselves, we can tune batches according to downstream requirements rather than settling for a generic grade. In dye manufacture, trace metals play havoc with hue and brightness, so we developed an in-line monitoring step that triggers automatic removal of out-of-spec material before it hits the packaging line.
We operate our own QC laboratory, equipped for HPLC, GC-MS, and titrimetric analysis, alongside older tried-and-true wet chemistry. Each O-Aminophenol batch comes with a certificate detailing actual assay data, loss on drying, melting range, and metallic impurities. Over years of dealing with customs and regulatory bottlenecks, we learned that documentation has to be transparent and detailed—more than just “meets spec.” Mistakes during sampling or careless blending caused us setbacks in the past, so process control now covers the entire lot, not just a final composite sample.
For users in Asia and Europe, we followed up on stricter standards for aromatic amine content and train our teams to make records transparent, so that any flagged impurity can be addressed long before cargo leaves our warehouse. Because our production cycle is compact and rarely makes use of external intermediaries, traceability from raw aromatic nitrate right up to the finished O-Aminophenol is a routine task—not an afterthought. This approach stems from old lessons in lost containers and product recalls, which nobody wishes to repeat.
A common weakness in generic O-Aminophenol production exists: insufficient removal of reduction byproducts and over-oxidized species, both of which show up as yellowing or dark solids and can trigger failure during downstream dye coupling reactions. Frequent customer complaints in the early 2010s pushed us to invest in improved reduction and post-treatment stages. Our current process uses a multi-stage active carbon protocol and maintains a closed environment that limits product exposure to environmental oxygen during final isolation. The difference is clear: batches retain brightness and avoid the heady ammonia odor that often lingers from undercooked commercial samples.
Another flaw in the market involves over-dried or poorly stabilized O-Aminophenol. Shop-floor users dread picking up a drum of what should be free-flowing powder only to find sticky lumps inside. That happens when drying conditions are rushed or not tailored to a particular particle size. From our end, we monitor both shelf life and handling properties, so the product remains manipulable until the last gram.
Our equipment investment was a direct response to this area. Application of indirect heating for drying, paired with vacuum control, marked a turning point for stable powder texture. Older steam jacketed vessels sometimes yielded hot spots, cooking the product and forming dark cakes—a costly waste. Adjusting for the correct ramp rate, we avoid scorching and maintain the physical form that customers expect.
Beyond in-house R&D, customer plant visits gave us the clearest picture of how our O-Aminophenol performed outside our own lab. Watching operators blend, dissolve, or pump the product told us more than any technical data sheet. We found that packaging stiffness, degree of dust, and even lot labeling practices created headaches or delays in customer setups. So, reworking the packaging line, integrating anti-static liners, or supplying information in customers’ preferred language brought down workplace mishaps and mislabeling accidents.
Many formula manufacturers pressure us for zero-dust options, particularly after regulations tightened. Our development of semi-granular grades and pelletized options grew directly from such needs. These adaptations help both compliance officers and shop-floor operators, making it easier for them to meet personal exposure limits without sacrificing throughput.
Anytime a customer request flagged an obscure impurity, like nitrate residues after shipping during monsoon months, we made adjustments in QC as well as drying schedules. This pragmatic approach supports continuous improvement, not just in advertising but in factory reality. As a chemical manufacturer, adapting directly to field feedback prevents repeat mistakes and strengthens both product and customer relationships.
O-Aminophenol stands apart among aromatic amines due to its dual functional groups—a hydroxyl ortho to an amino group. Unlike para-aminophenol, often used for different dye and pharmaceutical pathways, O-Aminophenol creates intermediates for unique copper and iron dye complexes due to the proximity of its functional groups. Not every manufacturer can reliably keep the ortho configuration, particularly when process control slides or when starting from lower-cost technical material.
Comparing O-Aminophenol to similar intermediates—meta-aminophenol or para-aminophenol—differences show up not just in chemical structure, but in the final outcome during dye coupling or ring closure reactions. We frequently receive cross-spec inquiries from customers who believed the cheaper or more available para-aminophenol would substitute, only to find batch failure or inferior product color. Substitution leads to weaker hues or incomplete reactions. Years of practical troubleshooting revealed that successful formulation comes not just from knowing the correct raw material, but understanding the qualitative and process-driven differences.
Some technical buyers favor generic O-Aminophenol sourced from low-cost, large-volume markets. The price stays tempting, but hidden costs arise in the form of increased filtration, stalled reactors, dirty vessels, and more downstream rework. Reliable customers often return to our material for one reason: fewer shutdowns, less plant rework, and fewer variables disrupting their day-to-day business.
Today’s chemical buyers face scrutiny not just on price, but on purity, transport safety, and proven origin. Regulated sectors such as pharmaceuticals and dyes now ask for traceability, real data, and clear answers on how a batch was produced. Generic paperwork or unverified claims no longer persuade. By handling O-Aminophenol start-to-finish, we deliver on actual knowledge—where the product originated, what quality controls surrounded its manufacture, and the technical rationale behind each spec.
Continuous engagement with both raw material suppliers and downstream users gives us leverage to secure reliable feedstock and plan for changing environmental rules. As pressure increases to reduce impurity levels—whether traces of metals for dyes or background solvents for pharma—we’re positioned to act, not react, to these requirements. Our plant setup, location, and supplier relationships mean shorter feedback cycles and faster upgrades, rather than waiting for market-driven disruptions. Having weathered shortages, regulatory upsets, and logistics crises, we value agility and direct feedback more than sales volumes or marketing catchphrases.
Troubles often arise at the scale-up or transfer steps, particularly when a user switches between O-Aminophenol sources. Crystallization patterns affect filterability; color hints at oxidation; and unexpected odor or oily content signals contamination or improper workup. Each of these real-world issues passed through our doors more than once. Solutions came from open lines between our plant shift leaders, lab managers, and the formulators at customer sites. Instead of generic apologies, our response usually takes the form of site visits, joint root-cause meetings, actual process observations, and technical upgrades.
Years of dealing with off-grade supply led us to develop in-house methods for pre-delivery stability testing under simulated transport conditions—mimicking jolts, room temperatures, and humidity cycles experienced in actual shipping. Giving customers peace of mind means proving stability is not just a data sheet promise.
As with all aromatic amines, safeguarding both the environment and our colleagues drives improvements in containment, waste management, and exposure prevention. Waste byproducts of O-Aminophenol manufacture—nitrate-rich water, hydrogenated residues, and volatile emissions—fully enter our on-site water treatment plant before discharge. Over the last ten years, modifications such as closed-loop washing and reclamation of recoverable materials reduced our total waste output by roughly 35%. Our monitoring teams constantly track discharge composition, and we report this information to local authorities with full transparency.
Worker safety requires more than compliance paperwork—we rotate operators on handling lines, invest in dust-reducing transfer equipment, and give wide berth in scheduling so all material moves occur at reasonable speed, not under pressure. Site injury rates fell steadily because safe handling came from real feedback, not corporate dictates. Newcomers initially hesitate with aromatic amines, but tailored training and pairing up with experienced operators improved confidence and safety records.
The past decade saw rapid swings in costs and sudden holes in the supply chain. Many lessons from the raw material sourcing world entered our factory routines. We intentionally arrange dual-source supplies of critical feedstocks, storing enough on-site buffer stock to bridge interruptions. All this is not just to keep our own plant running, but to protect our customers from last-minute shortfalls that jeopardize their own production cycles.
In certain tight markets, we had to take a step back and review supplier ethics and environmental history before accepting shipments. This diligence sometimes led us to pass on lower-cost options in favor of reliability and actual evidence of sustainable practices. In times of global equipment or shipping delays, our close contacts with local logistics agents and customs officials helped maintain consistency in delivery times, which customers value more than the absolute lowest price.
The divide between manufacturers and intermediaries becomes obvious in field performance. Customers who move away from direct sourcing often end up facing problems harder to pinpoint, because middlemen mask variations, severe or minor, in material quality and contaminate purity chains with blind mixing. As a manufacturer, we guard against these risks by holding full information on each step—from chlorination or nitration to reduction and purification. Our customers benefit from knowing exactly what each label, batch, and certificate means.
For end users juggling rising regulatory complexity and customer complaints about output quality, sourcing O-Aminophenol from an engaged manufacturer translates to less firefighting and more process confidence. The increased traceability, technical know-how, and customization options can mean the difference between routine operation and frequent unplanned downtime.
Running a chemical factory never rewards complacency. Each O-Aminophenol batch expresses decades of lessons—failures as much as successes—in synthesis, purification, logistics, and, above all else, open communication with users. We lean on empirical evidence, never sales-driven jargon, to shape each production run. This method, supported by traceable batch records, frequent technical exchanges, and realistic process upgrades, turns a commodity chemical into a product that customers can trust under the highest stakes. Our path forward depends on keeping these values constant, producing O-Aminophenol that meets not just technical specs, but real market and user demands.
