Tannins

    • Product Name: Tannins
    • Alias: Polyphenols
    • Einecs: 232-409-7
    • 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 821298
    Name Tannins
    Chemical Formula C76H52O46
    Appearance Yellow to brown amorphous solid
    Solubility In Water Highly soluble
    Taste Astringent
    Source Derived from plants (bark, leaves, fruits)
    Molecular Weight 1701.19 g/mol
    Melting Point 210°C (decomposes)
    Uses Leather tanning, dyeing, wine production, pharmaceuticals
    Ph Acidic

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

    Packing & Storage
    Packing Tannins are packaged in a 25 kg net weight, double-layered kraft paper bag with inner plastic lining for moisture protection.
    Shipping Tannins should be shipped in tightly sealed, appropriately labeled containers, away from moisture and incompatible substances. Store in a cool, dry, and well-ventilated area. Follow regulations for chemical transport, ensuring compliance with local and international guidelines. Handle with care to prevent spillage, and include proper documentation and safety data sheets during shipment.
    Storage Tannins should be stored in tightly sealed containers, protected from light, moisture, and air to prevent oxidation and degradation. They should be kept in a cool, dry place, ideally at room temperature. The storage area must be well-ventilated and free from incompatible materials such as strong oxidizing agents, acids, and bases. Always label containers clearly and follow safety guidelines.
    Application of Tannins
    Purity 98%: Tannins with purity 98% is used in water treatment processes, where high purity ensures efficient removal of heavy metal ions. Molecular weight 1700 Da: Tannins of molecular weight 1700 Da is used in leather tanning, where optimal molecular size enhances collagen cross-linking and leather durability. Particle size <5 μm: Tannins with particle size <5 μm is used in wine clarification, where fine dispersion improves sedimentation and clarity rates. Thermal stability up to 120°C: Tannins with thermal stability up to 120°C is used in industrial adhesives, where resistance to high temperatures maintains adhesive integrity. pH buffer range 4.0–7.5: Tannins with pH buffer range 4.0–7.5 is used in animal feed additives, where buffering capacity stabilizes gut conditions and improves nutrient assimilation. Astringency index ≥0.85: Tannins with astringency index ≥0.85 is used in pharmaceutical formulations, where high astringency promotes effective protein precipitation and wound healing. Solubility in water ≥90%: Tannins with solubility in water ≥90% is used in textile dyeing, where high solubility enhances color uptake and dye uniformity. Sulphate content <0.2%: Tannins with sulphate content <0.2% is used in food preservation, where low sulphate levels reduce risk of off-flavors and maintain product safety. Bulk density 0.48 g/cm³: Tannins with bulk density 0.48 g/cm³ is used in drilling fluids, where optimal density improves fluid stability and filtration control. UV absorbance 320 nm: Tannins with UV absorbance at 320 nm is used in sunscreen formulations, where effective UV screening enhances skin protection.
    Free Quote

    Competitive Tannins prices that fit your budget—flexible terms and customized quotes for every order.

    For samples, pricing, or more information, please contact us at +8615365186327 or mail to admin@ascent-chem.com.

    We will respond to you as soon as possible.

    Tel: +8615365186327

    Email: admin@ascent-chem.com

    Inquiry

    Get Free Quote of Ascent Petrochem Holdings Co., Limited

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

    Certification & Compliance
    More Introduction

    Tannins Manufactured for Performance, Reliability, and Responsible Sourcing

    Setting the Foundation: Real Manufacturing Experience with Tannins

    Tannins tell a story of natural chemistry that stretches back centuries. Each batch brings the forest, field, and co-op into our plant, where the precision of our equipment meets the unpredictability of nature. Our facility, after decades of operation, has honed the extraction, handling, and finishing processes to protect functionality and purity – every shipment speaks directly to this focus.

    We select raw botanical sources based on scientific assessment, local partnerships, and consistent availability, not on fads or trends. Our team understands that the source – whether chestnut, quebracho, or oak – determines the yield and chemical profile of the final product. We organize sourcing trips after the rainy season to ensure harvest quality, and laboratory staff measure polyphenol content every morning, not quarterly.

    Core Applications and Advantages

    The chemical backbone of tannins influences a wide range of industries. Tannins provide tanning professionals with plant-based alternatives that replace chromium, yielding leather that ages richly and decomposes harmlessly. Water treatment managers in textile mills depend on tannins to bind heavy metals and organic contaminants, reducing their downstream impact. Our customers in adhesives and resins appreciate the reactivity of condensed tannins, which help produce boards with lower formaldehyde release.

    We cater to many other sectors as well – winemakers seeking mouthfeel and color stability, feed manufacturers managing nitrogen levels in ruminant nutrition, and oilfield technicians using tannins as shale stabilizers. Each of these uses draws from specific grades, tried and optimized in the field. Our technical liaisons, most of whom started their careers blending or quality checking product on the line, visit customers repeatedly to solve application-based challenges and share updated test data.

    Understanding Tannin Grades, Models, and Specifications

    Years of experience refining grade selection led us to develop a compact but versatile portfolio. Each model arrives as a powder or extract, dried to less than 8% moisture unless the process calls for a syrup concentrate. All grades undergo particle-size reduction, which we document via laser diffraction methods, and we eliminate off-spec product whenever deviation occurs above 5% of the target range.

    Our most popular condensed tannin grades come from quebracho heartwood, specified by their Stiasny number (reflecting aldehyde reactivity) and color index. For every 10 metric tons of powder, we run at least 40 titrations to adjust final blending, ensuring uniform reactivity across batches. This hands-on approach means our customers receive consistent penetration and color when tanning hides, or predictable dosage points when treating industrial wastewater.

    For hydrolyzable tannins, generally prepared from chestnut or oak, we prioritize gallic acid content and standardized astringency indexes. Our equipment, fitted with continuous inline pH and conductivity meters, captures these profiles in real time, not just on sample pulls. Shipping documents list all lot-specific test results, which buyers have learned to trust during regulatory audits.

    Why Direct Manufacture Matters

    Anyone seeking to understand quality differences only needs to walk through a plant floor. We invested in direct steam injection and automated drying to cut out the inconsistencies seen in open-air drying that plagued old facilities. Plant managers enforce rigorous cleaning protocols after every processing lot, as you cannot let residues from certain botanicals contaminate the next run.

    Plant-based chemistry walks a fine line: climate changes alter raw ingredient potency, while customer recipes demand reliability. Because we control everything from raw sourcing to milling and drying, adjustments can be made quickly. If a lot of chestnut displays unexpectedly high sugar content after rainfall, we tweak extraction times or swap to a different batch, not days later as can happen with third parties, but within hours.

    Internal traceability programs mean every shipment carries a story – not a marketing slogan, but an index of every stage it passed, every test it underwent, and every calibration made in response to real-time process data. Our operators read logs on the shop floor, not just from their desks, ensuring hands-on oversight. This allows research partners to trace analytical results right to the source.

    Safety, Compliance, and Environmental Responsibility

    Manufacturing carries real-world responsibilities. We follow local and global regulatory frameworks for chemical handling, occupational safety, and environmental stewardship – our company pays attention not just to what’s on paper but to what happens on the ground. For example, our wastewater is analyzed daily and reused where possible, and dust control measures keep workers and the surrounding area safe. With REACH and TSCA registrations in place, each batch is matched with third-party analysis if destination markets demand.

    We work with auditors and sustainability assessors, opening our doors each season, not just for certification, but for honest discussion about both progress and setbacks. If a storm disrupts supply, we update forecasts and warn industrial partners early. Tannin production depends on natural systems, so our procurement team visits supplier forests, inspects regeneration zones, and joins workshops in both South America and Europe for replanting programs.

    Differences from Synthetic and Other Natural Products

    Tannins have been compared with everything from phosphate precipitating agents in water treatment to synthetic adhesives in wood panel manufacturing, but no substitution reproduces every effect. The inherent structure—a web of phenolic groups—enables tannins to crosslink, scavenge metals, and chelate proteins. In leathermaking, this translates to resilience and a kind of coloration that synthetic chemicals mimic poorly.

    Whereas synthetic alternatives may lower upfront costs, their handling can cause real health or regulatory risks, not to mention higher disposal costs. Our staff maintain air quality meters and accidental exposure counters calibrated for real material safety, not just compliance with minimum law. With tannins, by contrast, the breakdown products return benignly to the environment, and operators routinely testify to working under far fewer restrictions when compared to synthetic-only processes.

    Application-Specific Support Rooted in Technical Experience

    Over the years, we have addressed unexpected foam in reaction kettles, unusual color drift during panel pressing, and viscosity swings that could sabotage an entire shifting schedule. Having technicians who cut their teeth mixing in development labs—rather than just reading manuals—drives real solutions. If a tannery reports unexpected speckling in their hides, our technical lead has likely spent time there, troubleshooting side by side.

    We do not handle product as line items; we test it on real machines, blend it into trial batches, and accept customer challenges directly. We maintain application centers for pilot-scale testing in wood adhesives, and we encourage customers to bring their own resins, water samples, or hides to run direct experiments. This keeps formulations honest and advice practical, bridging the gap between formulation theory and production reality.

    For wine and beverage producers, our enology team runs pilot fermentations to replicate warehouse conditions, then adjusts doses to balance flavor extraction without overwhelming a finished product. Feedback cycles with our agricultural partners establish product pile uniformity and stability in animal feed, cutting losses from spoilage and excessive nitrogen runoff.

    Responding to Industry Challenges and Supply Fluctuations

    Every supply chain faces volatility—from shifts in international shipping, to forest management policy updates, to sudden surges in demand from trend-driven markets. Because we work with growers, harvesters, and transporters directly, we catch swings early. Our long-term agreements with growers offer better price predictability for industrial partners, not just because we lock down purchase orders, but because we invest in storage and logistics. Dedicated silos stand ready to buffer harvest swings, and trained mill operators rotate inventory for freshness.

    Communication underpins every step. If raw material quality dips, we don’t simply re-blend to hit numbers; we flag the lot, run supplemental extractions, or, in rare cases, divert to secondary uses. Only by seeing firsthand the outcomes of improper grade selection—like cloudy water discharge or excessive downtime in panel production—can one appreciate the value of responsive, hands-on manufacturing oversight.

    Industry demands for certifications or ever-shifting specs do not catch us off guard. Our team takes an active role in technical working groups for tannin standards and is involved in pilot projects to reduce carbon footprints, not because such participation makes for marketing fodder, but because these conversations clarify real production implications. We have updated formulation guides annually to meet new regional environmental limits so customers avoid accidental compliance issues.

    Sustainable Forestry and Continued Research

    Tannins’ future depends on forest health and botanical research. Our procurement specialists join local authorities and forestry workers in surveys to assess regrowth cycles. If a region faces deforestation risk, we divert sourcing to certified zones, establishing incentives for landowners to replant and conserve. Not every grower appreciates this at first – some worry over short-term volumes – but over years, continued investment pays off, ensuring a stable future for everyone in the supply chain.

    Our R&D department maintains close partnerships with universities on three continents, studying not just extraction optimization, but also plant breeding for improved tannin yield and reduced ecological impact. Field trials on new chestnut cultivars allow our plant managers to plan expansion without jeopardizing supply or biodiversity. Results of these studies inform our long-term contracts with suppliers and our capital investments in processing equipment.

    Through this approach, we help build resilience not only for the product itself but for every partner involved in its journey from forest to finished application. Regulatory shifts or climate fluctuations no longer catch us unprepared. Our teams respond with open dialogue, transparent data, and a willingness to invest in new harvest management techniques or equipment upgrades.

    Practical Benefits for Industry Partners

    Direct communication with our technical team translates to visible improvements for customers. Tanners report increased yield and richer tones when using our high-condensed grades, verified through side-by-side production trials. Water treatment operators, using feedback provided by our chemical engineers, regularly reduce their post-treatment heavy metal levels. Adhesives manufacturers have jointly developed lower-VOC binders, tested in our pilot line and validated in their final market products.

    The biggest gain comes from predictability and transparency. Our buyers access not only a product spec sheet, but also historical quality logs, test results, and full documentation on sourcing and process history. In many markets, this helps pass regulatory checks and informs environmental audits, leading to fewer production stoppages and lower compliance costs. Because we engage hands-on in process troubleshooting and optimization, customers frequently return for more complex challenges, partnering with us on product development rather than routine supply.

    Raw material volatility still exists, but customers appreciate that our buffering systems, direct trade relationships, and responsive manufacturing help prevent the worst delays and surprises. For long-standing partners, this forms the basis of trust – not just because of marketing claims, but because repeated successful interventions demonstrate the value of experience and direct involvement.

    Conclusion: More than an Ingredient, a Commitment

    Tannins, as manufactured in our facilities, emerge not as a commodity but as an engineered, tested, traceable output of careful chemical, botanical, and logistical control. The focus stays fixed on direct experience: operator checks, quality logs, on-site troubleshooting, and direct field engagement with both suppliers and end users. This embedded presence up and down the supply chain forms the real difference, allowing users in every application—whether leather, water, resin, or feed—to count on both the product and the team standing behind it.

    Those who have worked with bulk chemicals know the headaches caused by guesswork and supply chain opacity. Through decades of work, hands-on site visits, exhaustive quality management, and transparent communication, our team ensures tannins meet the technical, regulatory, and ethical standards that today’s industries demand. No shortcuts, and no layers separating client from manufacturer. That reality shapes the product from raw extract to final application, benefiting every partner and user along the way.

    Top