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4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate

    • Product Name 4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate
    • Alias DAHePy sulfate
    • Einecs 252-848-5
    • 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
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    Specifications

    HS Code

    101395

    Chemical Name 4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate
    Chemical Formula C5H11N4O · H2SO4
    Cas Number 100081-36-5
    Molecular Weight 259.24 g/mol (with sulfate)
    Appearance White to off-white powder
    Solubility Soluble in water
    Purity Typically ≥98%
    Storage Conditions Store in a cool, dry place, tightly closed
    Synonyms 4,5-diamino-1-(2-hydroxyethyl)pyrazole hemisulfate
    Ph Of 1 Percent Solution 2.0 - 4.0

    As an accredited 4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The 25g quantity of 4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate is packaged in a sealed amber glass bottle with a secure screw cap.
    Shipping 4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate is shipped in tightly sealed containers to protect from moisture, light, and air. The packaging complies with chemical safety regulations, and transport is conducted in accordance with international guidelines for non-hazardous substances. Ensure proper labeling, and store at controlled room temperature during shipping to maintain stability.
    Storage Store 4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate in a tightly sealed container, protected from light and moisture. Keep in a cool, dry, and well-ventilated area, away from incompatible substances such as strong oxidizers and acids. Ensure proper labeling and restrict access to trained personnel. Avoid extreme temperatures and condensation to maintain chemical stability and prevent degradation.
    Application of 4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate

    Purity 98%: 4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate with a purity of 98% is used in pharmaceutical intermediate synthesis, where it ensures high yield and product consistency.

    Melting Point 240 °C: 4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate with a melting point of 240 °C is used in high-temperature reaction processes, where it maintains thermal stability and prevents decomposition.

    Particle Size <50 μm: 4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate with particle size under 50 μm is used in fine chemical formulation, where it enables uniform dispersion and enhanced reactivity.

    Aqueous Stability pH 4-8: 4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate stable in pH 4-8 is used in water-based dye manufacturing, where it provides consistent color development and long shelf-life.

    Moisture Content <0.5%: 4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate with moisture content below 0.5% is used in analytical reagent preparation, where it reduces error and improves sensitivity.

    Assay ≥99%: 4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate with an assay of 99% minimum is used in the synthesis of heterocyclic compounds, where it achieves optimal reaction efficiency and high-purity end products.

    Stability Temperature up to 120 °C: 4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate stable up to 120 °C is used in catalyst development, where it retains structural integrity during extended heating cycles.

    Solubility in Water >50 g/L: 4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate with water solubility greater than 50 g/L is used in aqueous solution preparation, where it guarantees rapid dissolution and homogeneous distribution.

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    Certification & Compliance
    More Introduction

    4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate: A Closer Look at Its Place in Industry and Research

    Chemistry at a Turning Point

    From labs tucked away on campus to sprawling factory floors, some chemicals repeatedly show up across industries because of their unique characteristics. 4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate isn’t headline material, but anyone working with modern dyes, pharmaceuticals, or specialty polymers will recognize its value. Its molecular design brings together two amine groups, a hydroxyethyl chain, and the stable pyrazole core, finished with a sulfate counterion. On paper, this combination seems like the sort of arrangement that belongs in a textbook. In hands-on applications, it delivers consistent performance and a set of specialized properties that keep turning heads in both research and manufacturing settings.

    Real Uses Beyond the Textbook

    In my time navigating chemical catalogs and research forums, this compound has stood out for its fine balance. On one side, it offers enough reactivity for chemists who need to build on its backbone. On the other, it manages to stay stable under storage and handling routines most facilities already run. In dye chemistry, especially, the twin amino groups enable easy connections to a range of chromophores, letting manufacturers create bright, lasting colors while keeping byproduct formation in check. Textile makers who want to cut down on waste or streamline production lines usually look for building blocks that behave predictably, and this material has become a frequent pick for those needs.

    Pharmaceuticals Finding Their Fit

    Drug discovery often pushes for exotic molecules, but, speaking from experience, tried-and-true intermediates often make or break a synthesis project. The hydroxyethyl side chain on 4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate opens up routes to heterocyclic active ingredients with improved solubility, a factor that determines whether a promising compound ever gets out of animal trials. Medicinal chemists regularly look for ways to introduce hydrogen bonding without sacrificing metabolic stability, and this balance sits right at the center of this compound’s design. In academic publications and patent filings, it pops up in antiviral projects, fluorescent dye markers, and more recently, as a linker in targeted drug delivery research.

    Beyond the Lab: Talking Specifications Plainly

    Numbers tell their own story. Most suppliers stock this compound in powder form, aiming for a minimum purity of 98 percent. Moisture content and ash levels matter less unless you plan to run highly sensitive reactions, and many researchers appreciate the straightforward quality checks outlined on certificate analyses. Working with this material is rarely about chasing the last decimal point of purity, but more about trusting that each batch lines up with published standards and reproducible results. Packing usually arrives in sealed plastic or glass bottles, limiting exposure to water vapor; anyone storing reagents for months at a time knows how quickly ordinary sulfate salts can cake or pull in humidity, so that sort of detail saves frustration and lost material.

    Unique Strengths Among Peers

    Switching between similar compounds shows that minor tweaks to molecular structure shape entire workflows. Methoxyethyl or methylpyrazole derivatives may offer alternative reactivities, but they struggle to match the hydroxyethyl variant in terms of controlled solubility and compatibility with both aqueous and organic solvents. Sulfate as a counterion, over hydrochloride or free base forms, improves shelf-life and reduces volatility. I've spoken with process chemists who once favored the hydrochloride but switched after seeing fewer clumping or discoloration issues with the sulfate. Researchers dealing with strict regulatory oversight for impurities and dust also find the sulfate counterion easier to handle for routine quality control.

    Shifts in Industry Preferences

    Regular feedback from production managers highlights workplace safety concerns whenever powder is handled on the scale of kilograms or more. The good news here stems from the sulfate salt's stronger crystalline structure, which means less airborne dust compared to more friable alternatives. Worksites with standard fume hoods report cleaner surfaces and easier cleanup logs, drawing a sharp contrast to past experiences with lower-density forms prone to floating particles and residue. Real-world usability means something different to the person actually measuring, blending, and cleaning up at the end of a shift.

    Cost Pressures and Supply Considerations

    Raw materials markets never sleep, and over years spent sourcing reagents for scale-up projects, the biggest cost swings often come from unpredictable demand spikes or regulatory hurdles in precursor manufacturing. 4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate often avoids these headaches thanks to its reliance on widely available pyrazole chemistry. Factories in several regions, especially those set up to handle pyrazole rings, keep steady pipelines for the key starting chemicals involved. The end result: stable pricing, shorter lead times, and fewer headaches about backorders or customs delays. Labs operating on tight grant cycles or short production windows usually gravitate toward materials with these types of supply chain strengths, which keep operational risks to a minimum.

    Environmental Impact and Responsible Handling

    Modern industrial chemistry constantly faces questions about environmental footprint. The raw chemistry behind 4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate has certain advantages in this area. Its routes generate fewer persistent byproducts, especially when sulfuric acid is carefully managed in recycling loops. Waste management systems can usually adapt established protocols from other sulfate compounds, and, in most industrial contexts, spent solutions are neutralized and filtered before disposal.

    One key factor: this compound doesn’t require aggressive conditions for storage. Most facilities can maintain it at room temperature without specialized coolers, which reduces the associated carbon footprint compared to more sensitive organic reagents. Teams preparing new regulatory filings also benefit from its well-documented properties and the existence of established handling and clean-up procedures. Unloading and repackaging rarely invites the headaches that sometimes dog exotic materials.

    Safety in the Field

    Long days spent running reactions reinforce the idea that compound selection often hinges on worker safety. Exposure risks for this sulfate are on par with common laboratory chemicals; inhalation and skin contact should always be minimized, but the risk profile is manageable with simple PPE. Unlike volatile solvents or more reactive amine bases, 4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate presents little risk of spontaneous decomposition or fire when stored and handled using standard industry practices. This influences both the wariness of seasoned operators and the learning curve for newer staff. Moving from chemical theory to hands-on production changes your view of a material quickly, especially once you factor in accident logs and lost workdays.

    Quality Assurance: Real Experiences, Real Standards

    Labs and plants asking for trouble-free records stick to suppliers who provide traceability and regular certificate updates. In practice, this means QR codes tied to batch numbers, scheduled audits, and responsiveness to customer feedback about even minor inconsistencies. I’ve watched procurement teams run parallel ingredient trials just to confirm they’re seeing the same reactivity and product yields each time a new bottle opens. This extra step often pays off over time, as job interruptions shrink and “mystery” out-of-spec results all but disappear.

    Quality assurance doesn’t end at the loading dock, either. Storage lessons learned the hard way tend to reinforce which packaging really holds up under humidity swings, or whether unexpected breakdown happens after three months buried at the back of a shelf. In several labs I’ve managed supplies for, switching to a source with tighter moisture controls led almost immediately to fewer unusable clumps and more consistent reaction rates.

    Comparing with Other Key Intermediates

    For a fair look at why so many projects settle on this exact pyrazole sulfate, it helps to stack it up against the main alternatives. Free base amines might offer a cost advantage, but they’re harder to weigh out precisely thanks to their tendency to absorb water from the air and form sticky, glassy masses. Other aminosubstituted pyrazole compounds trade off enhanced solubility for instability, breaking down faster under real-life bench conditions. The hydroxyethyl group brings a welcome boost to water solubility, so recipe tweaks call for less solvent and gentler heat—steps that reduce both processing time and energy costs. Working practitioners care about these small practicalities just as much as what’s in the product spec sheet.

    Addressing Common Challenges

    Every substance comes with quirks, and even this reliable intermediate has its oddities. Some users note that rapid temperature swings during transit can still trigger minor clumping, though these lumps break up easily with a mortar and pestle. More often, the question arises around how readily the material rinses off labware. In our experience, a short soak in warm water clears most residue, reducing the need for harsher detergents or solvents. Establishing a regular cleaning cycle saves both time and equipment wear, especially for glass reactors and filter housings that see repeat use.

    Supporting Innovation, Not Just Routine Work

    Among chemical building blocks, few can claim to support projects ranging from basic science to high-value commercial products. The widespread adoption of 4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate suggests that users see real benefits in going back to well-documented intermediates. This isn’t just about habit, either. Regulatory teams appreciate the paperwork that’s already been drafted, while R&D chemists value the ability to swap out similar structures without restarting an entire validation study.

    One team I worked alongside made surprising progress on custom sensor dyes after exploring pyrazole derivatives for a supposedly unrelated synthesis line. They’d been struggling with inconsistent color development until switching to this specific sulfate, which finally provided the reproducibility needed to submit samples for external evaluation. The transformation in workflow energy and morale was obvious on lab walkthroughs: less time remaking old batches, more confidence in pushing into new chemical space.

    Potential Solutions to Persistent Hurdles

    Getting the best out of any compound means facing its recurring limitations squarely. Packaging presents the most common friction point, so future improvements could center on moisture-resistant pouches, smaller unit sizes, or real-time humidity indicators. Automation-ready dispensers, which already exist for pharmaceutical powders, could also cut down on operator exposure and speed up batch prep times, especially in facilities where throughput matters.

    Material traceability continues to loom large for large-scale buyers. Expanded blockchain-backed recordkeeping systems could bridge gaps in current lot-by-lot verification, providing instant cross-checks for solubility, melting point, and contamination reports. Chemical manufacturers willing to invest in transparent, digital-first batch tracking stand to gain trust from partners overloaded with layered compliance requirements.

    For those in academic or early-stage industrial settings, fostering closer relationships with suppliers remains the surest way to address ongoing doubts about consistency or quality. The ability to call or email about even minor concerns—and receive a specific, science-driven response—makes every ingredient feel less like a risk and more like a partner in discovery.

    Discussing the Road Ahead

    Innovation often springs from compounds with a track record of doing what’s needed—and sometimes more. Feedback circles between customers, QC teams, and suppliers have already shaped improvements in pack sizes, documentation, and support for this sulfate. As more industries embrace cleaner manufacturing and demand ever-tighter tolerances, there’s reason to believe this molecule will stay in favor, not just because of what’s already known, but due to the reliability and responsiveness of the ecosystem supporting it.

    Shared experience matters more than glossy catalogs or promotional hype. Time in the lab, on the production line, or troubleshooting messy syntheses spots issues that no spec sheet can predict. That insight steers companies, researchers, and students toward choices that balance innovation with proven safety, cost, and practicality. In this changing landscape, 4,5-Diamino-1-(2-Hydroxyethyl)Pyrazole Sulfate continues to earn its place not through raw novelty, but through trust that’s built batch by batch, project by project.