Anhui Liwei Chemical Co., Limited
Products

2-Aminophenol-4-Sulfamine


    • Product Name 2-Aminophenol-4-Sulfamine
    • Alias 4-Amino-2-hydroxybenzenesulfonamide
    • Einecs 245-025-0
    • Mininmum Order 1 g
    • Factory Site Lingwu, Yinchuan, Ningxia, China
    • Price Inquiry sales2@liwei-chem.com
    • Manufacturer Anhui Liwei Chemical Co., Limited
    • CONTACT NOW
    VTB
    Specifications

    HS Code

    828541

    Chemical Name 2-Aminophenol-4-sulfamine
    Molecular Formula C6H8N2O2S
    Molecular Weight 172.20 g/mol
    Cas Number 98-33-9
    Appearance White to beige crystalline powder
    Melting Point 180-184°C
    Solubility In Water Soluble
    Boiling Point Decomposes before boiling
    Density 1.48 g/cm3
    Ph 5-7 (1% solution in water)
    Storage Conditions Store in a cool, dry, and well-ventilated place
    Synonyms 4-Aminosulfonamido-2-phenol
    Hazard Statements May cause skin and eye irritation
    Ec Number 202-653-9
    Uses Intermediate in dyes and pharmaceuticals

    As an accredited 2-Aminophenol-4-Sulfamine factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing White, tightly sealed plastic bottle containing 100 grams of 2-Aminophenol-4-Sulfamine; labeled with chemical name, hazard symbols, and handling instructions.
    Shipping 2-Aminophenol-4-Sulfamine is shipped in tightly sealed containers, protected from moisture and light. It is typically packaged according to regulations for transport of chemicals, clearly labeled with hazard information. Handling requires adherence to safety protocols, with shipping documents provided for compliance with local and international regulations. Store in a cool, dry place upon arrival.
    Storage 2-Aminophenol-4-sulfamine should be stored in a tightly closed container, in a cool, dry, and well-ventilated area away from incompatible substances like strong oxidizers and acids. Protect from light and moisture. Clearly label all storage containers and ensure access is restricted to trained personnel. Follow all relevant safety guidelines and local regulations for hazardous chemical storage.
    Free Quote

    Competitive 2-Aminophenol-4-Sulfamine 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.

    We will respond to you as soon as possible.

    Tel: +8615380400285

    Email: sales2@liwei-chem.com

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    Certification & Compliance
    More Introduction

    2-Aminophenol-4-Sulfamine: Real Manufacturer Insights Into a Key Intermediate

    Getting to the Heart of 2-Aminophenol-4-Sulfamine

    2-Aminophenol-4-Sulfamine stands as a backbone for several industries that count on reliable, high-purity intermediates. Over the years, the economic climate and regulatory scrutiny have driven fundamental changes in both process expectations and quality standards. In our manufacturing plants, we have seen customer needs evolve, shifting toward more stringent criteria, especially with pharmaceutical and specialty dye applications, which keep raising the bar. Our approach, developed through continuous investment and process refinement, ensures 2-Aminophenol-4-Sulfamine not only reaches high purity but also delivers consistent physical characteristics batch after batch.

    Specifications and Model Details Shaped by Experience

    Manufacturing 2-Aminophenol-4-Sulfamine at the industrial scale brings its own set of technical hurdles. We typically target product purity above 99% using a combination of controlled amination and sulfonation steps, supported by multi-stage recrystallization and stringent in-process analytical controls. The product has a characteristic white to light yellow crystalline appearance, stable under proper storage conditions and free-flowing for convenient handling in downstream blending and compounding.

    Over time, we observed customers scrutinize moisture and residual inorganic content more closely, so every lot undergoes water content measurements. Chloride and sulfate residue are checked by ion chromatography. As for solubility, it dissolves easily in warm water and most polar organic solvents, which simplifies its uptake in dye baths or formulation tanks. Granule size can be controlled within the typical range of 20-80 mesh, preventing unwanted dusting and ensuring that feeding or mixing equipment runs smoothly, even under high-throughput settings.

    Real-World Applications: Knowledge Carved From the Factory Floor

    Our teams have supplied this intermediate to dye makers, pharmaceutical houses, and photographic chemical blenders. In azo dye synthesis, 2-Aminophenol-4-Sulfamine takes a key spot in providing the desired chromophoric structures, especially where high-fade resistance and colorfastness matter. In our experience, clients producing hair dyes or related personal care colorants value the traceability of every raw material. They often request analytical transparency, which prompted us to keep regular communication between the lab and production teams, resulting in customized batch records and full trace analysis on every drum.

    In pharmaceutical contexts, 2-Aminophenol-4-Sulfamine appears as an intermediate where aminosulfonated aromatic rings are needed—sometimes for API synthesis, other times for contrast agent precursors. Stringent impurity profiles and low residual metallic ions differentiate a product that is fit for regulated markets. We align our impurity controls with the standards outlined in relevant pharmacopeias when needed, and supply documentation reflecting that a batch has matched every agreed expectation.

    Even outside major chemical hubs, water treatment compounding calls for 2-Aminophenol-4-Sulfamine from time to time, using its chemical reactivity to tie up heavy metals or as a component in specialized filter resins. In each case, physical cleanliness and trace byproduct management prove decisive, so our QA teams cut no corners. We never take shortcuts where public health or user safety is at stake.

    What Sets Our Product Apart From Basic 2-Aminophenol or Sulfanilic Acids

    It’s tempting to lump products like aminophenols, sulfanilic acids and sulfamines together, but we have watched clients run into practical challenges when they switch between these close cousins. 2-Aminophenol-4-Sulfamine strikes a different chemical balance. The sulfamine group at the 4-position changes the reactivity, shifting both its electrophilic and nucleophilic properties compared to the simpler aminophenol or basic sulfanilic acid. This leads to improved selectivity in coupling reactions, whether for diazotization, azo coupling, or pharmaceutical alkylations. Through feedback from our partners, we learned those seemingly small changes deliver measurable boosts to reaction yield or minimize unwanted byproducts.

    Other suppliers sometimes market general-purpose aminophenols for dye and pharma industries. We have seen that overlooked minor impurities, particularly in large-scale runs, can upset the whole batch profile and waste hours or days for our clients. That's why we commit to a dedicated synthesis line and tough analytical cutoffs, instead of relying on generic intermediates from multi-purpose reactors. This clear production segregation, paired with routine in-line purity checks, means our customers can trust every delivery, regardless of batch scale or destination.

    In regular client audits, the difference between generic and specialty-grade 2-Aminophenol-4-Sulfamine stands out. Smooth texture, reliable flow through packaging lines, a lack of caked lumps—even these seem trivial until just one bag gums up an automated dispenser or leaves stains on blending equipment. The product's particle stability matters not just for bulk shippers, but also for pharma and dye applications, where process reproducibility means less downtime, steadier quality, and happier end-users.

    Sustainability Matters: What It Means in the Real World

    Across all our facilities, the topic of green chemistry has moved from concept to direct action. Wastewater discharge limits, reagent recovery, reduced energy footprints—all shape every step of 2-Aminophenol-4-Sulfamine production. We’ve retooled batch reactors to capture mother liquors for sulfonation carryover, and rely on closed-loop cooling systems to save water. Air emissions from amine handling and sulfonating agents stay within national standards because overflow or fugitive releases not only risk regulatory penalties but also impact our neighbors and staff.

    We chose raw materials from trusted, audited suppliers and push for traceability. Byproducts, once regarded as nothing more than costly waste, now are evaluated for potential conversion or sale downstream, especially as technical-grade materials in resins or construction chemicals. Over the past three years, waste volume per ton of 2-Aminophenol-4-Sulfamine has fallen sharply. By giving attention to loss minimization at every work cell, from operators to the warehouse, we keep our operations both competitive and responsible.

    Meeting Clients Where Their Challenges Begin

    Challenges rarely follow the manual. A dye producer scaling up a variant process for a government textile contract may find itself caught by unexpectedly slow dissolution due to minimal moisture uptake, or someone in the life sciences field might encounter residue incompatibilities in a new formulation. We resist the urge to push a “one-size-fits-all” specification. Instead, each new client gets a direct line to technical support from our team leaders. We encourage open discussion of application difficulties; after all, our quality engineers often spot root causes that a conventional raw material supplier would miss.

    Once, a major colorant factory flagged inconsistent shades in different batches despite stable processing conditions. On-site investigations revealed trace oxidizable iron impurities, invisible to routine labs but critical in sensitive dye coupling. We recalibrated our metal ion removal steps and boosted batch release criteria. Similar client feedback has triggered minor but critical tweaks in drying times, packaging liner selection, and even secondary screening protocols.

    Flexibility, built over decades, lets our production platform accommodate special purity requests, tighter particle size needs, or even pre-dissolved forms for immediate drop-in use. Customers looking for rapid trial quantities get priority handling; those requiring serialized or tamper-resistant packaging for regulated supply chains access custom labeling and full-logistics review before a shipment leaves the dock. We know that missing a small detail today could spell a shut-down or audit-fail tomorrow for our downstream partners.

    The Real Price of Quality: More Than Just a COA

    In this industry, trust takes years to earn and seconds to lose. We compete with dozens of basic suppliers promising lower-price 2-Aminophenol-4-Sulfamine. Yet history shows that simply checking a COA or relying on abstract purity numbers rarely tells the whole story. Real-world production and distribution mean coping with pressure, vibration, humidity swings, rail or truck delays, and often with variable warehouse temperatures across continents.

    To maintain integrity all the way to the end-user, our packing operations use multilayer industrial-grade liners, vented only after inspecting for both dust control and airtightness. Every lot shipped overseas goes through vessel transit simulation packages to check for clumping, segregation, or color drift, especially for critical dye producers who care about the lightest pink tinge.

    Our internal trace system tracks every batch from reactor charge to delivery, so even years down the road, clients can get batch-level documentation for regulatory, troubleshooting, or litigation needs. We also retain retains from each campaign, stored under controlled conditions, making it possible to revisit physical properties if any rare anomalies emerge. This level of focus on traceability often reassures pharmaceutical clients entering new markets or undergoing health authority inspections.

    Never Just an Intermediate: Building Industry Relationships

    After decades in chemical manufacturing, the real picture goes beyond simple finished product supply. Collaboration shapes innovation. Many of our enhancements to 2-Aminophenol-4-Sulfamine arose from field conversations—whether at technical conferences, client plant visits, or sometimes on a frantic weekend trouble call. We find those face-to-face interactions ground our priorities; the shop floor will show you flaws in real time that no standard operating procedure alone could catch.

    Shared development projects with downstream partners have let us co-design trial runs, quick-turn analytical protocols, and in some cases, even new process setups for alternative applications. Rather than guarding process know-how, we share what works in purification or solvent selection and pass tips to help customers avoid known pitfalls—a win for all sides.

    In growing regions where market entry brings compliance or documentation headaches, such as Southeast Asia or Latin America, we guide our contacts through complex chemical registration or customs classifications. Decades spent getting export documents right, adapting safety sheets to changing global rules, and understanding site-specific end-user filings mean a smoother experience, from first order to shipment arrival and final inspection.

    Looking Forward: Evolving With Industry Demands

    No industry stands still. As regulatory frameworks and market demands shift, our shop floors and laboratories must adapt in stride. In the last few years, clients have asked for lower impurity cutoffs, tighter environmental controls, registration dossiers, and sustainable supply guarantees for 2-Aminophenol-4-Sulfamine. We see a rising interest in both “green” synthesis and regional backup manufacturing to reduce logistical risk.

    We have responded by accelerating digital documentation, auditing secondary supply routes, and increasing our own staff training cycles. Periodic equipment upgrades, automation of dosing and filtration stations, and smarter warehouse inventory controls all help to reduce operator error and keep lot-to-lot performance tight. Cross-functional teams—production, QA, logistics—now meet every week, reviewing product batch logs and discussing ongoing improvement priorities.

    Demand for electronic batch records, full-chain-of-custody tracking, and third-party certifications continues to rise. Digital transformation no longer sits on the sideline; our quality and IT teams collaborate daily to keep up with data validity, cybersecurity, and trace access for audits or compliance checks. We believe an open-door approach to such oversight—not just self-policed reporting—keeps clients returning and prevents misunderstandings.

    In the End: Expertise Rooted in Hands-On Work

    Our commitment to 2-Aminophenol-4-Sulfamine is more than a slogan. Staff at every level train not just to produce for “spec” but to challenge every delivery until it meets or beats the mark our markets demand. Experience shows that there is no substitute for technical awareness gained at the plant, no shortcut past hard-won process refinements, and no technological leap that fully replaces years of hard, collaborative effort.

    Building a reliable source of 2-Aminophenol-4-Sulfamine means investing not only in reactors, analytics, and compliance systems but also in the people and relationships that carry innovation forward. We measure our value not merely in tons shipped, but in problem-solving, transparency, and shared progress. That’s the perspective of a manufacturer rooted in both craft and science, determined to meet the challenges of industries that build with us, batch after batch.