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HS Code |
544725 |
| Product Name | Tannin Extract |
| Appearance | Brown powder or granules |
| Origin | Plant-derived |
| Solubility | Soluble in water and alcohol |
| Chemical Family | Polyphenols |
| Ph | Acidic |
| Main Uses | Leather tanning, wine clarification, dyeing, animal feed |
| Odor | Mild, earthy |
| Storage Conditions | Cool, dry place |
| Shelf Life | 2-3 years |
| Molecular Weight Range | 500-3000 Daltons |
| Toxicity | Low, but may cause irritation in high concentrations |
| Color | Light to dark brown |
| Source Materials | Bark, gallnuts, wood, fruits |
| Moisture Content | Less than 10% |
As an accredited Tannin Extract factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Brown kraft paper bag, clearly labeled "Tannin Extract", net weight 25 kg, moisture-proof lining, batch number, and handling instructions printed. |
| Shipping | Tannin Extract is shipped in sealed, food-grade barrels or kraft paper bags with polyethylene liners to prevent moisture exposure. The containers are labeled according to regulatory requirements. It must be stored in a cool, dry place, away from direct sunlight, heat, and incompatible substances during transit to maintain quality and safety. |
| Storage | Tannin Extract should be stored in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and moisture. Keep the container tightly closed and sealed, using materials compatible with tannins, such as plastic or glass. Avoid contact with oxidizing agents. Label containers clearly, and store away from food, beverages, and incompatible chemicals to prevent contamination. |
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Purity 98%: Tannin Extract with purity 98% is used in water treatment, where it efficiently reduces heavy metal ion concentration. Molecular weight 600 Da: Tannin Extract of molecular weight 600 Da is used in leather tanning, where it increases the tensile strength of finished leather. Solubility 99% in water: Tannin Extract with 99% water solubility is used in pharmaceutical formulations, where it improves active compound bioavailability. Particle size <50 microns: Tannin Extract with particle size less than 50 microns is used in dye manufacturing, where it ensures homogeneous blending and color consistency. Thermal stability up to 150°C: Tannin Extract with thermal stability up to 150°C is used in adhesives, where it maintains bonding strength under heat exposure. pH stability range 4–8: Tannin Extract stable in pH 4–8 is used in animal feed additives, where it sustains antioxidant properties during digestion. Viscosity grade low: Tannin Extract of low viscosity grade is used in drilling fluids, where it facilitates rapid mixing and dispersion. Ash content <2%: Tannin Extract with ash content below 2% is used in wine clarification, where it minimizes residue and preserves beverage quality. Residual solvent <0.05%: Tannin Extract with residual solvent less than 0.05% is used in food preservation, where it adheres to stringent food safety standards. UV absorbance 0.40 at 280 nm: Tannin Extract showing UV absorbance 0.40 at 280 nm is used in textile finishing, where it provides enhanced UV protection to fabrics. |
Competitive Tannin Extract prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please call us at +8615371019725 or mail to admin@sinochem-nanjing.com.
We will respond to you as soon as possible.
Tel: +8615371019725
Email: admin@sinochem-nanjing.com
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After decades of manufacturing chemical products for different markets, we’ve learned that not all natural extracts deliver the consistency and performance industries require. Tannin extract, especially from our facility, offers a dependable solution for applications where the characteristics of plant-derived tannins bring real value. Our hands-on approach over the years shaped our process: carefully sourcing raw material, monitoring the extraction, and controlling the drying and sizing. The result is a substance that meets the tough requirements of both traditional and advanced applications—well beyond what generic tannins, low-quality grades, or improvised blends can provide.
Our production runs include several grades, each with their own chemical fingerprint. We work directly with key sectors—leather, adhesives, water treatment, mining, drilling, and even some niche food uses. End users look for a particular performance from tannin extract, and from experience, the biggest factors always come down to solubility, reactivity, and how the material interacts with minerals or other chemicals. Manufacturing at scale lets us control these variables.
Our tannin extract line features a few core models: Tannin Extract Powder (TEP), Tannin Extract Granular (TEG), and a high-purity series for customers with demanding color standards or solubility requirements. All are produced from selected tree sources, usually Quebracho and Chestnut, as their consistent tannin profile leads to predictable performance, batch after batch. In our main offering, the powder runs between 60-70% polyphenolic content on dry weight. For granular products, the particle range goes from 1 to 4 millimeters. Moisture typically remains below 8%. We monitor every batch in our own QC lab with UV spectroscopy and classic chemical titration.
The extract’s physical properties—color, flavor notes, and particle shape—came from years of calibrating our equipment and fine-tuning our filtration. Some competitors push out dark, sticky, or dusty material that clogs up automated feed systems or fouls resins in water treatment. Our methods keep the material free-flowing and with minimal fines, an underrated factor for end-users who automate dosing.
Customers in the leather tanning industry know the difference our tannin extract brings. Vegetable tanning requires stable color, predictable shrinkage, and no residual stickiness. Cheap extracts can leave uneven coloring across hides or cause trouble with water recycling. We receive direct feedback on performance at each stage: liming, pickling, and finishing. Dropping the wrong grade extract, or inconsistent batches, wastes labor and sometimes ruins tons of hides.
The wood adhesive and plywood industry relies on tannin for its cross-linking with formaldehyde or furfural, forming strong, water-resistant bonds. We’ve seen some users try switching to alternative extracts or blends, only to deal with inconsistent resin properties or brittleness. Our tannin keeps its reactive sites open, confirmed by the same viscosity and curing rate for years. Unlike some crude alternatives, our extract does not introduce waxes, foreign sugars, or carry-over saps that can clog equipment or weaken glue bonds.
In water treatment, especially as a natural flocculant for separating heavy metals and organic particles, our product provides the right molecular weight and charge density to form strong, stable flocs. Smaller or less refined extracts break down too quickly, leaving behind color or leading to poor settleability. In mine effluent and industrial waste, plant tannins offer a biodegradable option with real field results—our teams have measured reductions in chemical oxygen demand and better filterability, with reduced residual toxicity.
Other uses surprise even us. Drilling fluid companies in North America and the Middle East turn to our granular tannins for controlling fluid loss in high-temperature bores, where synthetic chemicals break down. Some specialty food producers rely on our food-grade powder to stabilize beverages, add astringency, or bind proteins. In winemaking, local vintners sometimes ask for a low-ash, low-toxicity batch to clarify musts and add character.
Not all extracts, even from the same tree, behave the same way. Years of sampling batches from other suppliers confirm this. Water content, fineness, the presence of unwanted sugars, and even the way the bark was aged or treated before extraction all change the chemical profile. Some manufacturers rush the drying phase, leaving pockets of moisture or hard lumps that don’t dissolve. Others neglect cleanup of volatile compounds, which alter the smell and performance—an issue you only discover once you’re troubleshooting downstream problems.
Our facility addresses these sources of variation at every stage. Freshness matters; we source bark and wood directly, never from piles exposed to rain or long-term storage. We keep drying temperatures below levels that char the product or destroy the main polyphenols. Modern extraction allows us to keep unwanted byproducts (like non-condensed tannins) to an absolute minimum. Regular feedback from our leather, mining, and adhesive clients shapes our internal quality standards, often tighter than what standard product specs call for.
Several companies ship blends mixed with unidentified fillers or use low-grade agricultural byproducts—despite selling it as pure tannin. We run chemical fingerprinting of competing samples and have turned away customers looking for the lowest price, knowing the risks of coatings that fail prematurely or recirculating water lines that clog with debris. For anyone running high-throughput or automated processing, clogged pumps and unexpected downtime cost far more than the small premium for a cleaner, properly refined tannin.
Market demand for plant-based additives keeps rising, but sourcing and processing quality raw materials gets more challenging. Global supply pressure on key trees—especially Quebracho from South America—tightens every year. We face increased scrutiny, both regulatory and from our customers, about responsible sourcing and process transparency. Our team walks suppliers’ facilities, rejecting anything that falls short of traceability or clear origin. Unexpectedly wet seasons, fungal outbreaks, and new pests change the chemistry of the bark and wood, so we reinforce supplier training and offer premium payments for best-quality lots.
Quality control remains labor-intensive. The market expects natural extracts to behave like engineered molecules—that’s not always realistic. By investing in advanced testing every batch, we cut the risk, but never to zero. In one run, a rare shift in bark supply left us with a faint loss in color power in a few containers. Only rapid detection and direct communication with affected customers prevented serious production jams.
Adulteration risks rise as market prices jump. Less scrupulous producers throw in sugars, sawdust, or even iron shavings to bulk up weight or mimic darker colors. This short-term thinking tanks performance across the supply chain, stressing everyone from processors to end users. Educated buyers push for batch testing, but not everyone checks. Our own negative experience with tainted raw shipments years ago leads us to run in-house confirmation checks regardless of supplier confidence.
Forest management matters for both product quality and ecosystem resilience. We support multi-year replanting programs and audit cutting practices. Clear-cutting, overstripping, and unmonitored harvests deplete tree stands that replenish high-quality bark. Our relationships with local co-op harvesters in South America and European forests give us access to consistent supply, while contributing to community employment. The cost of compliance—third-party audits, report preparation, and on-the-ground checks—shows up in our bottom line, but failing in this respect costs far more in damaged reputation and lost customer trust.
Processing residues and wastewater can stress factory environmental controls. Our facility filters and treats all water after extraction to below government thresholds, then reuses as much as possible in secondary processes. Tannin-rich water lends itself to advanced flocculation processes, removing even more solid load ahead of discharge. Solid waste goes for composting or local agricultural use, providing extra value. We publicly share our environmental audit data—transparency stakes are too high to ignore, especially with evolving standards in both the EU and North America.
Tannin extract, although derived from trees, still demands attention to safety and regulatory standards. Our process limits heavy metals and checks for pesticide residues, as some raw material flows face incidental contamination. We conform with current limits set by the EU, the US EPA, and Japan’s standards for both animal and human contact. For products intended for food contact or potential ingestion, we run additional microbiological screening—leathers and adhesives don’t face the same micro-risk as those moving into food systems.
We routinely supply end user documentation, including regulatory clearances, for sensitive applications. Some customers have run into trouble with suppliers unable or unwilling to supply complete regulatory traceability, costing them sales or even legal liability. Direct control over manufacturing and close partnerships with inspection agencies let us safeguard our customers and our own reputation.
Plant-based chemicals catch more attention as industries move away from synthetic and petroleum-derived alternatives. We watch the development of bio-adhesives, where tannin blends with sugar derivatives and modified proteins, aiming to match strength and moisture resistance that compete with classic epoxies. Leather tanning users press for more uniform color and shorter finishing cycles. In emerging niche applications, from pharmaceutical carriers to advanced water purification, molecular refinement and purity take the lead.
We run pilot programs with universities and applied research labs, especially pushing for new applications in environmental clean-up—using tannin’s chelating ability for soil and water decontamination. Still, scaling these solutions relies on predictable quality and price stability, something only achieved through vertical integration and investment in both raw material supply and factory upgrades.
Sustainability pressures shape every decision now. Audiences, from investors to regulators, worry about habitat destruction and working conditions among our harvesting partners. To address this, we expand long-term supply contracts, offer annual sustainability reports, and invest in traceability systems. It’s not just about legal compliance; we watch for shifts in consumer preference, certification standards, and competitive positioning.
Challenges come up that no spec sheet anticipates. Machinery jams, unexpected precipitation during harvest, a market shock due to regulatory bans on a competing synthetic—each tests our ability to adapt. We keep extra capacity in drying and grinding equipment to cope with surges in demand or an off-spec shipment that needs double processing. Our QA lab now runs seven days a week at peak times. Chemical fingerprinting lets us catch subtle shifts before a truckload ships.
Direct feedback loops help. We invite leather technicians, mining operators, and food formulators to our plant, watch them run our product through their systems, and listen to complaints and ideas. This gives us insight into design adjustments or new blends months before they become a pain point. Adopting new technologies, from real-time particle sizing to improved extraction solvents, reduces cost and process variability.
Industry partners often co-fund research into alternate species for extraction, giving us a bench-tested route to expand or diversify supply. We invest in pilot lots and controlled field trials before commercial rollout. Sharing risks and rewards in these programs helps us deliver both better product and more resilient supply.
Control of manufacturing sets our tannin extract aside from repackaged or relabeled alternatives. Running our own extraction, drying, and finishing means we do not have to depend on traders or anonymous intermediaries. We compare side-by-side trials with samples from distributors and often hear from customers about wild batch-to-batch swings from less controlled supply chains.
Our long relationship with key raw material suppliers, combined with technical staff who know each critical step, means fewer surprises. We respond to traceability requests in hours, not weeks, and can custom-produce grades to fit specialized equipment or niche system needs. This agility, supported by deep hands-on experience and ongoing investment, gives us confidence in our tannin extract’s place in today’s market.
Tannin extract’s unique value comes from direct control over sourcing, manufacturing, and real-world problem-solving—not just meeting a written specification. From personal contact with raw suppliers to daily hands-on monitoring of every batch, we know what it takes to ensure plant-based ingredients can work at commercial scale. Our investment in quality, environmental responsibility, and continuous feedback gives users more than a commodity; it offers a platform for building innovative, sustainable products for years ahead.