Anhui Liwei Chemical Co., Limited
Products

2,4-Diaminophenol Sulfate


    • Product Name 2,4-Diaminophenol Sulfate
    • Alias 4-Hydroxy-1,2-phenylenediamine sulfate
    • Einecs 220-012-1
    • 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

    788676

    Chemical Name 2,4-Diaminophenol Sulfate
    Cas Number 3640-34-6
    Molecular Formula C6H8N2O · H2SO4
    Molecular Weight 240.22 g/mol
    Appearance White to off-white crystalline powder
    Melting Point ~270°C (decomposes)
    Solubility Soluble in water
    Odor Odorless
    Ph 1 Solution 4.0 - 6.0
    Purity Typically >98%
    Storage Conditions Store at 2-8°C, protect from light and moisture

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

    Packing & Storage
    Packing Amber glass bottle containing 100 grams of 2,4-Diaminophenol Sulfate, sealed with a screw cap, labeled with product and safety information.
    Shipping 2,4-Diaminophenol Sulfate is shipped in tightly sealed containers, protected from light, moisture, and incompatible substances. It should be labeled with proper hazard and handling information, and transported according to local, national, and international regulations, including DOT, IATA, or IMDG, to ensure safe delivery and compliance with all safety guidelines.
    Storage 2,4-Diaminophenol Sulfate should be stored in a tightly sealed container in a cool, dry, well-ventilated area, away from sources of moisture and incompatible substances such as strong oxidizers and acids. Protect the chemical from light and heat. Use appropriate personal protective equipment when handling, and label the storage area clearly to prevent accidental exposure or chemical reactions.
    Free Quote

    Competitive 2,4-Diaminophenol Sulfate 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

    Get Free Quote of Anhui Liwei Chemical Co., Limited

    Flexible payment, competitive price, premium service - Inquire now!

    Certification & Compliance
    More Introduction

    2,4-Diaminophenol Sulfate: Supporting Reliable and Consistent Results in Chemical Manufacturing

    Over the past few decades, our experience as a manufacturer has shown that success with specialty chemicals like 2,4-Diaminophenol Sulfate grows from a clear understanding of the production routes, end-user requirements, and the challenges faced during large-scale synthesis. The conversation shifts quickly from purity claims and compliance paperwork to the real challenges—reproducibility, scalable consistency, and safety during use. For 2,4-Diaminophenol Sulfate, choosing the right form and grade makes a difference that downstream users see in results, not just specifications.

    Understanding the Backbone of 2,4-Diaminophenol Sulfate Production

    Decades in chemical manufacturing have shown us the value of a strong foundation in raw materials and process discipline. The process for manufacturing 2,4-Diaminophenol Sulfate requires precise reaction control, especially where heat management and batch timing define the purity window. Our operators engage constantly with both automated and manual control points, using both data trends and their hands-on experience to nip potential deviations. Stable supply chains for aniline derivatives and sulfate reagents support uninterrupted operation of our reactors, while in-line filtration preserves the integrity of batch-to-batch outcomes.

    At the heart of the process, operators check intermediate stage samples and monitor for signs of side-reactions or color drift—common issues that only show up in trial runs by customers when impurities interfere with application requirements. Supplying chemical companies, pharmaceutical formulators, and specialty dye manufacturers, we recognize subtle process variations matter more than glossy specification sheets might suggest. From temperature logging to particle size checks, every step gets logged and reviewed, not just for paperwork, but to guarantee the next shipment performs just like the last.

    Our Model: Focus on Compounded Purity and Process Traceability

    The market offers a range of grades for 2,4-Diaminophenol Sulfate. We focus on maintaining high compliance standards and ensuring traceable, repeatable batches. Experience has taught us that academic and technical grade differences may seem subtle on paper but show up bluntly in practice—products intended for dye manufacturing benefit from careful control over trace metal contaminants, which otherwise bleed color or shorten shelf life.

    Batch records include origin of precursor materials, time of reactor charge, all pH adjustments, sulfate addition sequence, and filtration settings. We calibrate our analytical instruments using certified reference materials. For every shipment, a certificate links back to these records, helping our customers investigate not only quality issues but also opportunities for improved process compatibility on their end.

    Specifications With Real-World Consequences

    Grade specification for 2,4-Diaminophenol Sulfate usually centers around purity, moisture, and trace byproducts. For industries using this compound as a dye intermediate or as a raw material in certain photographic processes, these numbers translate directly to performance. Our material typically exceeds 99% purity by HPLC, but we focus equally on controlling color index and insoluble matter, as even minor deviations change end-use appearance and reactivity.

    Some chemicals ship within broad purity bands. We’ve seen firsthand the downstream headaches that follow from even a half-percent drift in assay value or inconsistent solubility. When the product acts as a coupling agent or precursor in multi-step syntheses, side-products that sound benign on a technical sheet can cascade into failed reactions or off-spec batches. We don’t claim perfection, but we measure and minimize these variables, batch after batch.

    Key Differences From Other Related Intermediates

    Comparing 2,4-Diaminophenol Sulfate with similar aromatic diamines, noticeable differences emerge not only in the manufacturing process but also in the applications and user expectations. This sulfate salt differs from, for example, simple diamines or other aminophenol isomers by how it dissolves, reacts, and binds with downstream materials. Many formulae depend on its particular reactivity—whether that’s as a hair dye precursor, an agent in photographic chemistry, or a starting material in pharmaceutical exploratory synthesis.

    A critical aspect comes from salt form. The sulfate version is typically less hygroscopic than the free base, tolerating variable warehouse conditions better and offering easier handling—our experience in logistics supports this. Shipping long distances, especially through humid regions, the sulfate form keeps its powder flow without crusting or caking. End-users who process tonnage scale find this especially useful compared to more basic salts or free acid forms, which often bridge or clump in silos, disrupting feed rates.

    Where process compatibility matters, our clients report fewer cleaning or downtime events when using consistent sulfate salt material from our lines, compared to lower grade suppliers or alternate salt forms. It’s these things—often omitted from data sheets—that come around as decisive for repeat business.

    Applications: Lab Scale to Production

    Most of the 2,4-Diaminophenol Sulfate we ship lands in dye formulation plants and specialty chemical production. We have watched trends move from batch operations to semi-continuous and fully automated lines. Every transition increased scrutiny on purity, safety, and reactivity, making our internal process audits more frequent and thorough.

    A significant portion of our customers run colorant processes—aniline dyes, oxidative hair colorants, and ink components. Here, reaction yield and stability get tied directly to the quality of incoming raw materials. Experiments with low-grade or off-brand supplies rarely recover lost performance by downstream rework. Our history with large formulators led us to standardize on analytical checks for iron and copper traces; even minor upticks in those impurities can throw off oxidation balance and waste hours of troubleshooting downstream.

    Another group of users includes photographic product manufacturers. They value batch traceability above all; an impurity level that passes for dyes won’t always meet the stricter bar for photo imaging chemistry. We improved our quality controls over several years to meet this demand, going from simple titration-based assessments to full chromatographic profiling with impurity fingerprinting. Our best-run batches show consistency over years, not just quarters, and this is the level we maintain for repeat orders in sensitive applications.

    Some experimental pharmaceutical projects and fine chemical research programs use this material as a building block. Here, we work more closely with users, running joint assays to identify low-level contaminants, and sometimes tuning the process to favor certain impurity spectra. We rarely tout this as a point of sale but regard it as an obligation earned from past setbacks—where a compound succeeded in a pilot batch but failed on scale because low-level byproducts interacted unpredictably.

    On-Site Handling and Usability

    Lab and production teams working with 2,4-Diaminophenol Sulfate benefit from its crystalline sulfate form, which stores better in drums and totes during long transits or staged inventory holds. Over the years, customers told us of their old frustrations with other forms that arrived caked or cross-contaminated with solvent residues or unstable decomposition products. Maintaining a clean, free-flowing powder is both a technical and logistical priority, and our warehouse crew treats humidity management as seriously as the analytical team treats purity control.

    Our packaging lines moved from single-wall bags to multi-layered inner liners after a series of customer audits identified rare but costly moisture absorption issues. This small adjustment—adding a tighter moisture barrier—reduced loss claims and sift-out incidents by a noticeable margin. Local customers collecting material on-site see little difference year-round, but overseas and long-haul clients value this consistency.

    Material safety procedures around this compound remain straightforward when compared to more volatile or caustic precursors. Proper ventilation, dust control, and sealed handling minimize exposure risk. We support users with best-practice guides grown out of real incidents—not just theoretical recommendations—in the hope of eliminating surprises at their end. These guides update any time we identify practical improvements during plant visits or review customer feedback.

    Commitment to Evolving Standards

    The regulatory frame for 2,4-Diaminophenol Sulfate became stricter over the years, especially around impurity labeling, handling documentation, and environmental discharge. Our compliance team keeps routines nearly as tight as the production line, updating certifications, and responding fast to new audit or registration requirements. Regulatory reviews never happen in isolation; every update ripples through sourcing, processing, shipping, and customer documentation.

    Some global clients come back after regulatory updates to ask for material from certified lots or bespoke impurity profiles. Many times, these requests highlight the value of a direct link to the manufacturer—traders and brokers rarely keep the necessary documentation, let alone insight into intermediate process streams. That distinction shapes how we view long-term business partnerships, emphasizing openness with our methodology and a willingness to adapt processes, not just fill orders.

    Challenges and Solutions From the Ground Up

    Running a chemical site that produces 2,4-Diaminophenol Sulfate equal to international standards takes more than automated analyzers and paperwork. Experienced staff notice early signs of trouble—a note in the batch log about reactor noise, the way a filter dries clumps less smoothly, the slightly off-hue of a finished lot. These add up to a culture of preventive action, where issues get solved before a customer calls with a complaint or missed deadline.

    For example, early batches decades ago suffered from trace byproducts building up in process water. At first, this got ignored; after several customer quality complaints, we overhauled the solvent recycle loop with tighter water quality controls and a weekly flush routine. Now, wastewater quality is checked alongside finished goods, and flagged if any spike in baseline appears, so issues catch early rather than after downstream users notice a drop in clarity or performance.

    Another pressure comes from logistics—international shipping routes lengthened after global supply shifts, leaving containers exposed to longer dwell times in humid ports or transit zones. Before we switched to double-sealed bags and regular shipment checks, multiple cases of caked product and contamination cropped up. End-users need reliability, not just a refill. Inadequate packaging or missed shipment windows lose us more trust than any lab out-of-spec report, so we invest more in logistics planning than many competitors willing to risk variable quality for a short-term saving.

    Customer feedback—good and bad—drives improvements. A repeated issue with mixing tanks clogging during late winter led us to change the granular profile of our product, so particles stay separate and flow easily. Adjustments like this come from on-the-ground calls and site visits, not from rigid checklists or regulatory nudges. The best improvements arise from listening to people who use the product every day.

    Building Knowledge Into Practice

    Experience shows that real-world process optimization never ends. Our technical support works closely with clients seeking to shave costs, increase reaction yields, or adjust input requirements. There’s no one-size-fit-all solution; a colorant plant in Europe presses for the tightest trace metal specs, while a startup in Asia wants reliable material flow for rapid scale-up, and a research chemist in North America needs a material that doesn’t obscure their NMR spectra. By maintaining a flexible but disciplined approach to production, we respond to these needs instead of dictating them.

    Beyond technical dialogue, the exchange goes both ways. Our process engineers frequently consult with customers on modifications to formulation or mixing procedures—sometimes saving them hours of troubleshooting by relaying lessons learned at our own site. If a batch clogs a filter or dissolves unpredictably, we review not only our specs but also the customer’s feed process, solvent ratios, and mixing rates. Solutions often emerge from a combined view of chemistry, process engineering, and hands-on operation.

    For smaller volume customers or research groups, batch consistency matters just as much, possibly more, as it does for large buyers. A surprise impurity spike ruins weeks of work, costing time, credibility, and sometimes project funding. This direct knowledge shapes our ongoing approach—small batch controls get just as much attention as high-volume production runs.

    Looking Ahead: Evolving With User Needs

    The needs of end-users and industrial stakeholders continue to shift with new regulations, emerging technologies, and downstream product innovation. Photographic technology may have shrunk in mainstream use, but pharmaceutical and specialty colorant applications still pull strongly on global supply. Innovation at our own plant comes less from sudden leaps and more from gradual improvement—minor tweaks to filtration, handling, and analytical review building up over time.

    We pay close attention to signals from partners using our material in novel applications. Approaches such as green chemistry and reduced-waste synthesis push us to review inputs, recovery systems, and solvent use in ways that didn’t matter five or ten years ago. By investing in process audits and engaging with researchers seeking low-impact chemistry, we adapt both product and practice to support a more sustainable future.

    Why Direct Manufacturing Engagement Matters

    Anyone sourcing 2,4-Diaminophenol Sulfate faces a web of supply points—traders, resellers, online catalogs. From our side, only the manufacturer has a full view of what happens from raw material intake to finished batch sealing. The edge gained comes not from a single purity number but from handling, processing, and follow-up, all based on years of direct experience.

    Clients choosing direct manufacturer supply see more than just prompt shipment and periodic updates. They gain access to process insights, regular batch history, and a team invested in supporting their continuous use of the product. In many client audits, detailed engagement with our technical group has averted costly incidents or detected minor issues before they became production stoppers. No trader can substitute that level of engagement.

    For every lot shipped, our team stands behind both the chemical and the process. Over the years, this approach won us repeat business, trust, and inclusion as a preferred supplier on the most challenging projects. As manufacturing—and regulatory—environments evolve, we’ll keep adapting, maintaining the steady hand a true producer brings to specialty chemical supply.