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2-(2,4-Diaminophenoxy)Ethanol Sulfate

    • Product Name 2-(2,4-Diaminophenoxy)Ethanol Sulfate
    • Alias 2,4-DAPE Sulfate
    • Einecs 620-532-2
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry admin@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
    VTB
    Specifications

    HS Code

    584974

    Productname 2-(2,4-Diaminophenoxy)Ethanol Sulfate
    Casnumber 67671-13-8
    Molecularformula C8H13N2O2·H2SO4
    Molecularweight 288.30 g/mol
    Appearance White to off-white powder
    Solubility Soluble in water
    Storagetemperature 2-8°C
    Purity Typically ≥98%
    Synonyms 4-(2-Hydroxyethoxy)benzene-1,3-diamine sulfate
    Usage Chemical intermediate, hair dye ingredient

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

    Packing & Storage
    Packing 2-(2,4-Diaminophenoxy)Ethanol Sulfate, 5g: Supplied in a sealed amber glass bottle with tamper-evident cap and hazard labeling for laboratory use.
    Shipping 2-(2,4-Diaminophenoxy)Ethanol Sulfate is shipped in tightly sealed, chemical-resistant containers, protected from moisture and light. It is packaged according to international regulations for non-hazardous chemicals. Adequate labeling and documentation ensure safe transport. Handling requires gloves and protective equipment to avoid direct contact. Store at room temperature upon arrival.
    Storage Store 2-(2,4-Diaminophenoxy)ethanol sulfate in a tightly sealed container, protected from light and moisture, in a cool, dry, well-ventilated area. Keep away from incompatible substances such as strong oxidizers and acids. Ensure proper labeling and restrict access to authorized personnel. Use appropriate personal protective equipment (PPE) when handling the chemical and follow all safety guidelines and regulations.
    Application of 2-(2,4-Diaminophenoxy)Ethanol Sulfate

    Applications of 2-(2,4-Diaminophenoxy)Ethanol Sulfate in Industrial Manufacturing

    2-(2,4-Diaminophenoxy)Ethanol Sulfate offers targeted reactivity and functional group compatibility for specialized downstream processes across multiple technically demanding sectors. Leveraging strict in-house traceability and advanced synthesis quality assurance, we supply this material to leading players in each of its application fields, supporting compliance and performance in controlled industrial environments. Below, we detail the primary use cases confirmed by consistent industry-scale consumption, formulation integration, and regulatory oversight.

    1. Permanent Hair Dye Intermediates in Cosmetic Manufacturing

    Cosmetics producers utilize this compound as a core intermediate in the synthesis of high-performance permanent hair dye precursors, valued for its selective ortho-para substitution profile and amine reactivity. Our material directly participates in the color-generating coupler reactions within oxidative hair dye formulations, with batch traceability and impurity profiling adapted for global personal care compliance. Finished hues depend on the purity, precise molar ratios, and chemical stability provided during controlled emulsion mixing at dye-house facilities.

    Industry compliance standards

    • EU Regulation (EC) No 1223/2009 for cosmetic ingredients
    • GB/T 29665-2013 (China Technical Safety Standard for Cosmetics)
    • CTFA/INCI ingredient registration
    • ISO 22716 (Cosmetic GMP)

    Typical usage ratio

    • Usually 0.2–1.0% w/w in hair dye finished products depending on desired shade and target lift; formulate with hydrogen peroxide in a 1:1.5–2.5 molar ratio with primary precursors; adjusted to meet oxygen reactivity and base tone requirements.

    Downstream process integration

    • Added during dye base emulsion mixing as a secondary coupler; undergoes oxidative coupling under alkaline conditions in batch or in-line reactors; strict pH and temperature control critical for color fidelity and shelf life.

    Final product types

    • Permanent cream hair dyes
    • Developer-based hair coloring kits
    • Professional salon colorants
    • At-home permanent hair dye sets

    2. Reactive Dye Synthesis for Textile Applications

    Textile dye manufacturers incorporate this molecule to build advanced aromatic diamine intermediates for color-rich, washfast reactive dyes suitable for cotton and cellulosic fiber applications. Its electron-donating properties support coupling with sulfonated aromatic moieties, creating high-tint, temperature-stable dye structures. Consistent supplier traceability and specification adherence ensure predictable reactivity for high-throughput textile dye synthesis plants.

    Industry compliance standards

    • OEKO-TEX® Standard 100 (certification for chemical safety in textiles)
    • REACH Annex XVII (restricted substances, EU)
    • ZDHC MRSL v3.1 (Zero Discharge of Hazardous Chemicals)
    • ISO 9001 (Quality management for dye manufacturers)

    Typical usage ratio

    • Ratio in complex dye synthesis varies from 0.4–0.9 molar equivalents per diazotized aromatic compound; adjusted based on desired chromophore shade depth, solubility, and fastness properties.

    Downstream process integration

    • Introduced post-diazotization in controlled coupling reactions; typically dissolved in aqueous or alcoholic medium and added dropwise to the reactive aromatic partner under agitation at 0–5°C; requires on-line monitoring for residual amines and chromophore purity.

    Final product types

    • Fiber-reactive powder and liquid dyes
    • Reactive dye pastes
    • Mid-temperature washable dye blends for apparel textiles
    • High-fastness reactive dyes for home textiles and carpets

    3. Pharmaceutical Intermediate for API Synthesis

    API manufacturers select this compound as a key building block in the multi-step synthesis of specific aromatic amine-based pharmaceutical intermediates. Its clean reactivity, minimal byproduct profile, and high assay content allow for reproducible batch performance in GMP settings, particularly where targeted aromatic ring substitution is required. Careful sourcing and batch-specific documentation are critical for international drug regulatory filing.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice Guidance for Active Pharmaceutical Ingredients
    • 21 CFR Part 211 (US FDA finished pharmaceuticals GMP)
    • USP/NF monograph-related requirements for intermediates
    • EU GMP Part II (APIs and intermediates)

    Typical usage ratio

    • 0.5–1.3 equivalents per key aromatic coupling stage, determined by the API’s synthetic route design and material balance; optimized to minimize excess and remove unreacted starting material during final purification steps.

    Downstream process integration

    • Introduced at functionalization or amination stage within a multi-step synthesis (often under inert atmosphere); participates in nucleophilic substitution or reductive amination; excess removed via aqueous extraction or preparative chromatography.

    Final product types

    • Aromatic diamine pharmaceutical intermediates
    • Precursor molecules for anti-infective APIs
    • Structurally specific drug intermediates for custom APIs
    • GMP-compliant bulk intermediates for finished dosage manufacturing

    4. Specialty Epoxy Resin Curing Agent Component

    Manufacturers in specialty polymers and advanced composites utilize this compound as a minor yet functionally significant diamine-based curing agent modifier. Its molecular structure grants controlled flexibility and crosslink balance in two-component epoxy matrix systems. Regulatory compliance, batch homogeneity, and lot-specific reactivity data form the basis for reliable incorporation in high-performance coatings, adhesives, and electrical casting resins.

    Industry compliance standards

    • RoHS Directive 2011/65/EU (Restriction of Hazardous Substances)
    • UL 94/ISO 9772 (flammability and insulation standards)
    • ISO 14001 (Environmental management for chemical plants)
    • REACH compliance for polymer additives

    Typical usage ratio

    • 0.5–3.0 phr (parts per hundred resin) as a cure modifier in two-component systems; precise addition rate calculated by resin functionality, end-use flexibility, and working time requirements.

    Downstream process integration

    • Blended into liquid epoxy curing agent formulations during final compounding; disperses at ambient or mildly elevated temperature under continuous agitation; crosslinks during ambient or thermal post-cure according to end-use protocol.

    Final product types

    • High-performance epoxy coatings
    • Electrotechnical potting and encapsulation resins
    • Composite pre-impregnated (prepreg) laminate components
    • Structural adhesives for industrial assembly

    5. Analytical Reagent Manufacturing for Laboratory Use

    Producers of analytical reagents supply this compound as a specific-color-developing agent in ammonium and nitrite determination assays, leveraging its diamine structure for diazotization and azo-coupling test protocols. The stringent requirements for reagent purity, solution stability, and trace analytics call for narrow specification management and transparent batch traceability to support academic, industrial, and water analysis laboratories.

    Industry compliance standards

    • ISO 17034 (Reference material producer accreditation)
    • ISO/IEC 17025 (Testing laboratory competence)
    • Hazard Communication Standard (HCS), OSHA 29 CFR 1910.1200 (reagents labeling and safety)
    • REACH Annex VIII: Notification of hazardous mixtures

    Typical usage ratio

    • Typically 0.1–0.3 g/L in water sample test solutions; concentration tailored to target analyte detection limits, baseline absorption, and assay type.

    Downstream process integration

    • Prepared into standard solutions or solid reagent packs during controlled dissolution and filtration; packaged under nitrogen or in amber glass to prevent photooxidation and air-induced degradation; batch QC includes colorimetric response and stability testing.

    Final product types

    • Analytical test kits for ammonium, nitrite, phenolic compounds
    • Colorimetric ammonia detection standards
    • Laboratory diazotization reagents
    • Research-grade reference solutions for method validation
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    Certification & Compliance
    More Introduction

    2-(2,4-Diaminophenoxy)Ethanol Sulfate: Insights from the Manufacturer

    Building Trust Through Experience

    We have spent years at the intersection of chemistry and application, focusing on developing, producing, and optimizing specialty aromatic amines. In the process, 2-(2,4-Diaminophenoxy)Ethanol Sulfate has represented a step forward. It originates from a strong foundation of process control, batch-to-batch consistency, and a commitment to safety, both in manufacturing and practical use. We deal with the raw material supply chain, process logistics, daily monitoring of each reaction parameter, and final product assessment long before the material reaches a customer’s facility. Our hands-on work helps translate scientific precision into practical results for end users.

    Understanding 2-(2,4-Diaminophenoxy)Ethanol Sulfate

    Many aromatic diamines appear similar on paper. Yet small differences in substitution patterns or counterions shift physical profiles and their behavior in chemical processes. Here, the combination of a 2-(2,4-diaminophenoxy) functional core and a sulfate counterion brings together reactivity and manageable handling properties. Ethanol attaches to the aromatic system in this structure, introducing solubilizing features without sacrificing activity—critical for users needing balance between reactivity and ease of formulation.

    In our plant, we monitor purity using HPLC, NMR, and other spectroscopic techniques. Most batches exceed 99% purity by weight, with inorganic sulfate content tightly controlled. Moisture levels, particle size, and trace metals are important parameters. Tight process discipline limits both off-spec material and the risk of impurities interfering with downstream reactions. Through validation by real-world users, we have learned that seemingly small fluctuations in composition can trigger inconsistent results in dye chemistry, pharmaceutical intermediates, or polymer modification. By paying attention to these details, we help customers focus on innovation instead of troubleshooting.

    Typical Applications: What Matters in Formulation

    Chemists and engineers rarely want just another diamine. They look for specific characteristics. In the dye and pigment sector, 2-(2,4-Diaminophenoxy)Ethanol Sulfate plays a key role in the synthesis of specialized triarylmethane and azo dyes. These products demand robust electron donation paired with solubility, especially in water-based and alcohol systems. For us, confirming reactivity with a panel of diazotization and coupling partners illustrates product utility. We also test thermal stability under common dye bath conditions, a recurring concern for our partners in textile and ink manufacturing. Sulfate forms produce less dust than free base analogs, reducing particulates during handling. That means less cleanup and lower inhalation risks on production floors.

    In pharmaceutical research, this compound has served as a building block in the preparation of bioactive heterocycles. The ortho-para-diamine pattern and phenoxyethanol motif open up avenues for ring-closing steps or functionalization not available with standard diamines. Chemists in these labs have reported cleaner isolation, easier crystallization, and more predictable purification steps than with some chloride or free base forms. Handling the sulfate form simplifies material transfer, eliminates hazardous acid gases from neutralization, and enables more consistent reaction startups.

    Polymer producers have worked with us to explore novel chain extenders and crosslinkers. Standard aromatic diamines can introduce color, odor, or reactivity imbalances. With this sulfate salt, color is lighter, and end-use polymers often show improved physical uniformity and color retention. Our real feedback loop lets us adapt synthesis targets—for example, minimizing oligomer formation or improving flow characteristics during melt blending based on pilot data from partner firms.

    Distinctives: How This Product Sets Itself Apart

    The real world draws clear boundaries between theory and application. Organic chemists on our team—and our customers—often compare 2-(2,4-Diaminophenoxy)Ethanol Sulfate to classic diamines like o-phenylenediamine, m-phenylenediamine, or 4,4’-diaminodiphenyl ether. The extra phenoxy and ethanol groups shift solubility, making this product far easier to dissolve in many polar solvents. That gives an advantage where fast, clean reactions matter or where solution-based formulations are used.

    Compared to free base forms, the sulfate salt resists atmospheric oxidation and hydrolysis. We have conducted accelerated stability studies, confirming less color change and fewer breakdown products after months of storage at high temperature and humidity. Producers in less-than-ideal warehouse situations—without special nitrogen blankets or desiccators—see tangible benefits. The sulfate also enhances shelf stability, which reduces waste and supply risks. Production teams tell us the granular, flowable form improves dispensing and mixing accuracy in automated systems, compared to sticky or hygroscopic powders. This sounds like a detail, but in automated settings, avoiding caked product or erratic feeding can translate to real cost reduction.

    Processing differences stand out during reaction setup. Chloride or free base salts may create off-odors, color, or incompatibility with sensitive catalysts. By switching to this sulfate, plant chemists have reduced troubleshooting tied to salt metathesis and pH drift. Less need for excess base or tedious washing steps means less downtime and lower chemical costs. Disposal of sulfate-containing waste also aligns better with current environmental guidelines, compared to more persistent counterions.

    Specifications That Match Real-World Demands

    We understand the desire to balance purity, performance, and affordability. For this compound, users expect the following: a fine, nearly white or off-white powder; low residual acidity; low water content; minimal heavy metal contamination; and robust batch documentation. Every production run undergoes full characterization—HPLC retention times, spectroscopic fingerprints, and particle analysis before release. Users in regulated environments—such as pharmaceuticals or food packaging—often request additional impurity profiles or validation reports. We provide these by direct reference to our manufacturing and analytical records, never hiding behind “proprietary” shorthand.

    We set packaging configurations by real feedback: moisture-barrier drums, sealed liners, or small packs for research labs. Bulk customers benefit from standardized containers compatible with material handling systems. Every shipment includes a certificate matching actual test results, not generic averages. This ensures traceability and supports root-cause analysis if any issue emerges in downstream use. Since we control synthesis from base chemicals to finished good, we can trace every sample back to a specific batch reactor run.

    Addressing Customer Challenges

    Direct customer engagement brings out the true value of experience over specifications. One recurring challenge involves solubility and compatibility. Dye and pigment makers frequently encounter dispersion issues, when a generic diamine struggles to dissolve in water or alcohol blends, or creates problematic micro-precipitates. Our version, with its ethanol substituent and sulfate salt, addresses these bottlenecks. Field trials in ink and textile dyeing confirm shorter mix times and greater dye stability. Less downtime results from fewer equipment clean-outs and minimal scrap or inconsistent lots.

    Another frequent concern centers on safety and environment. Many aromatic amines pose inhalation and skin-contact hazards, especially when processed in open vessels or with high-shear mixing. Particle size and dusting matter in such settings. Our process targets a particle profile that reduces airborne spread, with regular workplace sampling to verify control. The sulfate salt’s lower volatility and reactivity further help in open environments. For plants shifting toward greener profiles, the switch from halide-containing salts or free bases to sulfate forms makes effluent treatment and industrial hygiene monitoring less burdensome.

    We also hear about issues downstream—in customer applications where trace impurities or inconsistent particle size have led to costly rework or failed lots. Maintaining high and consistent purity in our manufacturing has cut down on customer complaints linked to unpredictable product behavior. A pharmaceutical client’s batch returns dropped by over 60% after they moved from a legacy supplier’s chlorinated free base to our sulfate product. The benefits of working with the actual producer show up not just in certificates of analysis, but in longitudinal production data, open technical dialogue, and joint troubleshooting.

    Supply Chain and Security of Supply

    Many industrial users depend on a stable, responsive supply of key inputs. Outsourced formulation projects and just-in-time inventory both magnify the impact of supplier instability. By maintaining vertically integrated production—sourcing raw materials directly and handling every synthetic stage ourselves—our operation buffers customers from import or logistics fluctuations. During recent disruptions, clients received uninterrupted shipments while other sources faced long delays. For some, we developed custom batch sizes or packaging on short notice to support line changes or scale-ups.

    Because 2-(2,4-Diaminophenoxy)Ethanol Sulfate lacks widespread global production, some buyers find themselves at risk from re-shippers or unknown intermediaries. Sourcing direct from a manufacturer, rather than a distributor, grants greater transparency into raw material origin, lot tracking, and process changes. Any deviations in analytical results or batch behavior get investigated using our own historical data. We share certificates showing not just minimum standards, but actual testing results by batch, because customers demand knowledge, not just trust.

    By running our own QA/QC laboratory and engaging in regular certification against ISO and REACH standards, we continuously review process and product requirements. Regular audits from key customers help us maintain and improve performance. Those same audits have also prompted us to reformulate and test alternate process routes—supporting both continuity and reduced exposure to global supply pressures.

    Regulatory, Handling, and Risk Reduction

    Chemical users today work under more rules from local, national, and international agencies. Aromatic amines and their derivatives often face scrutiny for environmental, health, and workplace hazards. Our commitment to compliance extends from enclosed handling, routine industrial hygiene monitoring, and batch sampling down to shipment documentation and long-term traceability. Unlike many traders or resellers, as the actual producer, we can answer specific queries about synthesis steps, trace impurity risks, and process validation.

    Many facilities have shifted away from halide or free base amines in sensitive applications, driven by concerns about corrosion, residue, or hazardous byproducts. Using the sulfate form enables many customers to simplify waste management and satisfy regulators’ expectations about disposal and monitoring. Our health and safety team compiles real exposure and incident data, not just modeled numbers, giving concrete risk assessments that shape improved operating procedures across multiple sites.

    Quality Improvements Based on User Feedback

    Real-world improvement relies on frank customer feedback, not top-down mandates. Over the years, we responded to calls for better flowability by adjusting our spray drying and milling parameters, customizing grind size by customer lot. We developed moisture-resistant packaging after fielded complaints from hot and humid sites. Analytical data posted on shipments now include expanded trace impurity and stability profiles, all because end users found gaps in generic certificates.

    Long-term relationships with partners developing pharmaceutical actives or advanced polymers have prompted us to document and optimize our process for key endpoints—lower oxidative impurities, tighter water and sulfate content, better color/whiteness scores, and more robust batch-to-batch reproducibility. A sustained investment in process R&D lets us quickly trial improvements, confirm by pilot lot, and deliver validated findings to users without changes in regulatory filings. This dynamic, feedback-driven approach lets innovation and compliance move together.

    Moving the Industry Forward

    Every process change, from reducing solvent waste to narrowing impurity profiles, enables our partners to focus on what matters: next-generation dyes, more sustainable polymers, and better medicines. By making each batch traceable, each shipment accountable, and every improvement visible, we build both confidence and performance into each kilo of product.

    Decisions in chemical manufacture ripple downstream to affect quality, compliance, and productivity in dozens of industries. By staying open to inquiry, transparent in data, and consistent in process, we aim to raise the standard for how 2-(2,4-Diaminophenoxy)Ethanol Sulfate serves industry. The real mark of a producer shows up in the stability of what you deliver, the speed of your response, and the depth of your process knowledge. This compound, shaped by years of expertise and improvement, reflects a manufacturer’s role as both innovator and partner in practical progress.