Products

SYNGUARD HAP (p-Hydroxyacetophenone)

    • Product Name: SYNGUARD HAP (p-Hydroxyacetophenone)
    • Alias: HAP
    • Einecs: 202-793-9
    • Mininmum Order: 1 g
    • Factroy Site: Yudu County, Ganzhou, Jiangxi, China
    • Price Inquiry: admin@ascent-chem.com
    • Manufacturer: Ascent Petrochem Holdings Co., Limited
    • CONTACT NOW
    Specifications
    HS Code 312936
    Productname SYNGUARD HAP
    Chemicalname p-Hydroxyacetophenone
    Casnumber 99-93-4
    Molecularformula C8H8O2
    Molecularweight 136.15 g/mol
    Appearance White to off-white crystalline powder
    Meltingpoint 108-111°C
    Solubility Slightly soluble in water, soluble in ethanol and ether
    Boilingpoint 285°C
    Purity ≥99%
    Odor Faint aromatic odor
    Storageconditions Store in a cool, dry place; keep container tightly closed
    Synonyms 4’-Hydroxyacetophenone, para-hydroxyacetophenone
    Phvalue 4.0 – 6.0 (1% solution)
    Flashpoint 148°C (closed cup)

    As an accredited SYNGUARD HAP (p-Hydroxyacetophenone) factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing SYNGUARD HAP (p-Hydroxyacetophenone) is packaged in a 25 kg net weight HDPE drum, sealed and clearly labeled.
    Shipping SYNGUARD HAP (p-Hydroxyacetophenone) is typically shipped in tightly sealed, chemically resistant containers, protected from light and moisture. It should be handled with care, stored in a cool, dry place, and kept away from incompatible substances. Transport complies with relevant regulations to ensure safety and prevent spillage or contamination during transit.
    Storage SYNGUARD HAP (p-Hydroxyacetophenone) should be stored in a tightly closed container, in a cool, dry, and well-ventilated area, away from sources of ignition and direct sunlight. Protect from moisture and incompatible substances such as strong oxidizing agents. Ensure proper labeling, and store at room temperature. Follow standard chemical storage protocols and local regulations for safe handling.
    Application of SYNGUARD HAP (p-Hydroxyacetophenone)

    Applications of SYNGUARD HAP (p-Hydroxyacetophenone) in Industrial Manufacturing

    SYNGUARD HAP (p-Hydroxyacetophenone) is a well-recognized multifunctional ingredient utilized in several specialized downstream industries. As the direct manufacturer, we deliver consistent quality and compliance for each unique industrial application. Below, we detail the most prominent real-world uses, integrating sector-specific standards, formulation guidance, processing methods, and end-product examples.

    1. Cosmetic Preservatives for Skin Care Formulations

    Our material offers broad-spectrum preservation and mild antioxidant effects, making it integral to modern personal care formulations. Manufacturers value its compatibility with alternative preservative-free and paraben-free guidelines, particularly for sensitive face and body creams. Its addition occurs after the cooling phase to maximize stability and avoid heat-induced degradation. By supporting preservation in minimal dosages without affecting texture or sensory properties, it enables compliance with international cosmetics safety regulations across key markets.

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    2. Preservative Booster in Low-Alcohol Hand Sanitizers

    In the formulation of low-alcohol or alcohol-free hand sanitizers, this material enhances the antimicrobial performance of main actives, especially quaternary ammonium compounds. It helps address increasing regulatory restrictions on traditional biocides by allowing lower concentrations of main actives while maintaining protection against microbial contamination. Producers use SYNGUARD HAP in alignment with global hand hygiene regulatory requirements to maintain stability over product shelf-life.

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    3. Intermediate for Pharmaceutical Synthesis

    Downstream pharmaceutical manufacturers leverage p-hydroxyacetophenone as a core intermediate in the synthesis of several active pharmaceutical ingredients (APIs), including certain antipyretics and local anesthetics. Sourcing from a GMP-compliant producer ensures lot-to-lot traceability, low impurity profile, and conformity required for high-value medicinal products. Material is introduced at the early or mid-stage of multi-step synthesis, sometimes serving as a precursor for condensation or alkylation reactions.

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    4. Chemical Stabilizer in Industrial Coatings

    In the coatings sector, p-hydroxyacetophenone acts as a stabilizer and auxiliary antioxidant in waterborne paints and UV-curable coatings. Its addition prevents discoloration and polymer degradation, extending product shelf life and performance under exposure to light and heat. Coatings formulators must adhere to limits on VOCs and non-intentionally added substances to serve North American and European markets, integrating the ingredient into pigment grind or letdown stages as required by production workflow.

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    5. Auxiliary Stabilizer in Polymer Additive Masterbatches

    Compounders and masterbatch producers use our material to enhance antioxidant packages for specialty thermoplastics vulnerable to thermal and UV-induced degradation. It imparts stabilization benefits without compromising optical clarity or pigment dispersion, and supports compliance with migration and non-toxicity norms especially in applications with indirect food contact. The additive is compatible with extrusion and compounding lines, with dosage carefully balanced against polymer matrix and target weathering performance.

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    Free Quote

    Competitive SYNGUARD HAP (p-Hydroxyacetophenone) prices that fit your budget—flexible terms and customized quotes for every order.

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    Email: admin@ascent-chem.com

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    Certification & Compliance
    More Introduction

    Introducing SYNGUARD HAP (p-Hydroxyacetophenone): A Critical Ingredient, Engineered by Experience

    From the Production Line: Why SYNGUARD HAP Deserves the Spotlight

    We have spent decades refining the craft of chemical manufacturing, learning that true value comes from the small improvements that ripple out through the entire supply chain. SYNGUARD HAP, known chemically as p-Hydroxyacetophenone, is one of those products that shows the strength of getting the details right. Over the years, we have seen how this single compound – C8H8O2, CAS 99-93-4 – solves real-world headache in formulation and performance, shaping everything from skincare actives to stabilizers in polymeric systems. Many customers ask us what sets SYNGUARD HAP apart from similar compounds on the market. The answer goes beyond purity or specification; it lies in a history of consistent manufacturing practice and honest attention to downstream needs.

    What Sets SYNGUARD HAP (p-Hydroxyacetophenone) Apart?

    Take purity as an example. The technical threshold matters, but so does physical consistency and chemical reliability batch after batch. SYNGUARD HAP presents as a white crystalline powder and we regularly test each lot for melt point, color, and trace impurities, ensuring the product behaves as expected. Our vertical integration, from raw benzene derivatives through to finishing, gives us direct control over both the molecular fingerprint and morphological features, such as powder flow and absence of detectable off-odor. Application chemists have told us they notice these “small” details—no off-tones emerging, no residue interfering with mixing even at high concentrations. This saves time in the lab and on the shop floor.

    Many alternatives in the market get manufactured as afterthoughts to other core business lines. SYNGUARD HAP does not come about as a sideline product. We operate purpose-built reactors and never compromise on the washout cycles, meaning there’s no cross-contamination from unrelated molecules or byproducts. Frequent process troubleshooting teaches us how even slight changes in reaction controls alter the end product, sometimes pushing residual metals or colored byproducts past the threshold for sensitive cosmetics or personal care applications. We solve these problems at the source, keeping reproducibility in sharp focus.

    How SYNGUARD HAP Makes a Difference: Applications and Outcomes

    Manufacturers and formulators look for flexibility and predictable results. SYNGUARD HAP stands out for its combined antioxidant and skin-calming activity, widely used in next-generation cosmetic formulations. Our customers benefit because the compound addresses both performance and claim substantiation. As a phenolic compound, SYNGUARD HAP scavenges free radicals and improves shelf life in creams, gels, and emulsions without contributing color or strong odors over time.

    We have seen technology transfer teams come to us after struggling with common synthetic antioxidants or preservatives—trouble with solubility, risk of yellowing, or difficulties in regulatory compliance due to aldehydes or banned substances. Unlike older phenolic stabilizers such as BHA or BHT, SYNGUARD HAP does not build a profile as a suspected endocrine disruptor, and it slots easily into European and Asian market requirements. Product development in personal care now leans towards “mild” multifunctionals, and the gentle touch that SYNGUARD HAP brings doesn't require special processing or elaborate stabilizer blends during scale up. This cuts changeover work and loss rates during production.

    Our technical service team frequently helps partners replace less compatible preservatives, like parabens, with SYNGUARD HAP to clean up the ingredients deck. The transition is straightforward: it dissolves cleanly in many solvents, disperses without agglomeration, and doesn’t degrade at routine heating or cooling steps. Color stability remains a crucial concern for clear formulations, especially in leave-on personal care products. We run controlled studies comparing SYNGUARD HAP with mainstream benzyl alcohol or benzoic acid blends. Our customers report fewer occurrences of color fade or unwanted yellowing after storage tests.

    Polymers and specialty resins also benefit from the unique oxidative stability this molecule brings. Unlike other aromatic compounds, SYNGUARD HAP provides a specific combination of electron-donating and accepting capacity, giving plastics manufacturers a tool for fighting degradation under UV or heat aging. Experiments in our own pilot line demonstrate that including modest levels of SYNGUARD HAP lengthens product lifespans in outdoor applications such as automotive trims and transparent packaging films.

    SYNGUARD HAP Model and Specifications: Clarity by Practice

    We produce SYNGUARD HAP to exacting standards, typically ensuring a molecular weight of 136.15 and confirmed identity via both NMR and GC-MS spectra. Purity never dips below 99.75%, confirmed by HPLC, and moisture content remains below 0.10%. Melting point usually falls tightly in the 109–113°C range, and strict color checks mean users see less than 20 APHA in the finished powder. These values come from our standard production runs, based on years of data, not pulled from one-off lots. Our internal challenge is always to push the envelope on purity and batch-to-batch reproducibility, because every formulation relies on predictability, not just regulatory compliance.

    Before we release a batch, our own lab repeats a battery of tests, including checks for heavy metals below 5 ppm and low residual solvents. This consistent chemical fingerprint means a SYNGUARD HAP shipment manufactured last year will match what leaves our plant today. This continuity gives buyers stability no matter the application—less time spent on incoming QC, fewer reformulation cycles, more confidence for their marketing and regulatory filings.

    Why Consistency Matters: Real-World Production Hardships

    Most people outside the factory overlook how small inconsistencies in raw materials quickly snowball into large-scale production issues. Having run dozens of pilot initiatives, we see how off-spec batches cause ripple effects—shut down mixing lines, trigger off-odors during hot blending, and sometimes ruin finished product worth much more than the chemical cost itself.

    SYNGUARD HAP demonstrates its real value here. Think of a hair care producer relying on a preservative blend that suddenly shifts in color or flavor; thousands of units risk recall if even a minor impurity leaks through. During the pandemic, demand for formulations with proven antioxidant protection spiked, and we watched as existing global supply chains struggled to fill gaps with quality-assured batches. Several customers who previously sourced HAP as a minor component from traders found themselves rationing short shipments or explaining performance drop-offs to their own clients. By keeping control of every step in our supply, we answer these pressures directly—prompt fulfillment, documented batch records, and backup safety stock scheduled at every production interval.

    We invest in direct feedback loops with our largest customers to address hiccups immediately. Technical staff from the formulation side can visit our facilities for joint troubleshooting, and we keep open records of each production shift, letting clients track every critical parameter right back to the raw input. Not all manufacturers share this kind of cooperative transparency; others buy on the spot market, blending in inconsistent HAP sources and running the risk of surprise deviations down the line. For us, keeping production in-house means standing behind each drum and bag that leaves our gates.

    Environmental and Regulatory Responsiveness: Minimum Footprint, Maximum Compliance

    We see growing demand from both international and domestic customers for cleaner manufacturing with minimal environmental burden. Our process philosophy for SYNGUARD HAP keeps waste streams as short and localized as possible. Close-looped oxidations, efficient solvent recovery, and real-time safety checks make a difference not just for annual audits but as a matter of daily operations.

    Having weathered ever-tightening REACH standards and customer-driven “clean beauty” initiatives, we maintain the highest compliance documentation on SYNGUARD HAP. Our team keeps our statement of origin, specification sheet, and MSDS revisions up to date with changes in global chemical and cosmetic regulation. Experience shows auditors and regulatory agencies focus increasingly on traceability, heavy metals, and ethylene oxide residuals, so our labs run targeted analytics each quarter in line with these expectations. Finished-goods manufacturers in the EU and North America routinely reference our documentation as a benchmark during their own regulatory or market filing stages.

    Growing discussions in the chemical industry around microcontaminants, sustainable sourcing, and beyond-the-supply-chain responsibilities affect both raw ingredient manufacturers and downstream users. We listen to these conversations, adapting our process map where measurable improvements become possible. For SYNGUARD HAP, this has meant reducing the use of certain wash solvents, tightening recirculation setups, and cutting out color-inducing trace metals by tuning reaction paths at the catalyst selection stage.

    Direct from the Manufacturer: Why Our Perspective Matters

    The truth is, too many players in the supply landscape act as intermediaries, often forced to trust data and quality claims from other parties. As the actual manufacturer of SYNGUARD HAP, credibility doesn’t come from repackaged promises but from the lived reality of running our own reactors, controlling every turn of raw to finished product. When your own name appears on the test sheet, you stay ready to answer every end-user question, whether it’s about lead levels or origin story.

    Relationships with our users have proved invaluable. Technical requirements change, but building a foundation of responsiveness with real physical product behind it creates trust. Over time, our customers know that if a specification drifts, or if a new application emerges requiring modification to particle size or residuals, they have access to both the science and the practical fix. In some years, this means running overnight pilot batches; at other times, it calls for adjusting shipping patterns to meet just-in-time schedules.

    Longstanding experience shows that keeping everything in-house, from reaction plant to batch lab to shipping dock, makes those quick pivots possible. We have faced routine power outages, sudden regulatory changes, and logistical slowdowns, and we have always kept to delivery timetables and certificate accuracy because each drum of SYNGUARD HAP comes from our own line. This keeps the process straightforward for the customer and preserves our hard-won reputation over dozens of audit cycles.

    The Human Side: Supporting Innovation and Rising Above Challenges

    Working directly with product developers, formulators, and scientists, we have seen firsthand the value SYNGUARD HAP brings to the table. Take skin care labs searching for the next formulation breakthrough: integrating HAP as a stabilizing cosmetic multifunctional clears common development roadblocks. Instead of masking off-flavors or unwanted colors with additional additives, developers rely on SYNGUARD HAP to keep profiles clear and simple.

    In circumstances where formulators discover ingredient restrictions tightening overnight—especially in beauty, hygiene, and topical medical applications—having a single molecule like SYNGUARD HAP, which fits both the technical and regulatory brief, speaks for itself. Trials run alongside our clients often demonstrate time savings when shifting from traditional preservatives: fewer adjustment cycles, less need to revalidate new ingredients, and a lower risk of consumer complaints following unforeseen interactions with fragrances or pigments.

    Surmounting production challenges, especially in hot and humid climates, often exposes shortcomings in storage stability or caking in lesser-grade products. Our direct experience handling large-scale orders in these harsher climates led us to refine our drying and packing protocols, giving SYNGUARD HAP a shelf life customers can depend on, with no surprise lumping. By listening to feedback from all stages—R&D, QA, production—we keep the supply chain tight and honest.

    Looking Forward: Continuous Progress in SYNGUARD HAP Manufacturing

    We do not believe in resting on legacy alone. Advanced manufacturing methods and real-world feedback keep pushing our work on SYNGUARD HAP forward. Teams across our facilities regularly revisit process efficiency, waste minimization, and yield improvements, seeking better ways to deliver both the quality and flexibility our partners expect.

    A recent focus has been driving energy use lower through heat recovery, paired with tighter digital monitoring right down to the batch cooling phase. These changes reflect a commitment to sustainability that meets both customer and community expectations. Among global specialty chemical makers, only a handful keep such detailed logs and welcome customer audits as part of standard procedure. This open-door policy builds mutual learning and uncovers creative solutions in formulation and production design.

    Innovation in downstream chemistry is another area where SYNGUARD HAP displays its versatility. New projects in the pipeline involve using our product as a platform for further functionalization, creating derivatives tailored to highly specific anti-aging or antimicrobial needs. This approach gives finished goods manufacturers a springboard for patent-protected innovation, while the supply of the core chemical remains steady and traceable.

    Staying engaged with regulatory bodies and trade associations helps us stay ahead of the curve—pre-empting ingredient blacklisting or unforeseen cross-reactivities that might derail long-range product lines. This sense of responsibility, built on decades of genuine manufacturing experience, keeps us nimble and reliable as a partner.

    Summary: Real Performance, Straight from the Source

    Manufacturing SYNGUARD HAP is more than a technical exercise; it’s a continuous commitment to quality, transparency, and long-view partnership. Every kilogram of p-Hydroxyacetophenone that leaves our gates reflects controlled synthesis, careful testing, and respect for the people across the production and innovation chain. Downstream users value not just the printed specification, but the reliability, story, and accountability that comes only from those who make the chemical themselves. The process doesn’t end with a batch record or shipped pallet—it continues through every formulation challenge, regulatory filing, and customer milestone. In SYNGUARD HAP, our collective expertise meets practical application, building a legacy measured not just in tons produced but in trust earned, shipment after shipment.

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