China Factory Direct
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| CAS number | 9025-71-2 |
| Product name | TANNASE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeFood GradeCosmetic Grade |
| Packaging | 25KG/bag |
| Sample | Test Samples Available (Click to Request Samples) |
| COA | View COA |
| Price | Get Quote |
| Supply Type | Bulk / Contract manufacturing / OEM |
| Shipping | FCL / LCL available |
| Payment Terms | Support FOB \ CIF \ EXW quotations, and accept Letter of Credit (L/C). |
| Manufacturer | Greenrock Chemical(China Factory) |
Based on current marketvolatility and material availability.
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
| Industry | Application | Process |
|---|---|---|
| Food Industry | Clarification and debittering of tea beverages | Catalytic hydrolysis of ester bonds in tea polyphenols |
| Winemaking Industry | Improvement of wine flavor and stability | Degradation of tannins to reduce astringency |
| Pharmaceutical Industry | Production of pharmaceutical intermediates such as gallic acid | Enzymatic hydrolysis of tannic acid to produce gallic acid |
| Animal Feed Industry | Enhancement of feed digestibility | Degradation of tannins in plant-based feed materials |
| Cosmetics Industry | Preparation of antioxidant ingredients | Hydrolysis of natural tannins to obtain active components |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Enzyme Activity | UV-Vis Spectrophotometry | Measures absorbance change at 280 nm or 540 nm due to hydrolysis of tannic acid or methyl gallate substrate. |
| Protein Content | Bradford Assay | Based on binding of Coomassie Brilliant Blue G-250 dye to basic and aromatic amino acid residues. |
| Moisture Content | Karl Fischer Titration | Quantifies water via stoichiometric reaction between iodine, sulfur dioxide, and water in methanol/pyridine medium. |
| pH | Potentiometric Measurement | Determines hydrogen ion activity using calibrated glass electrode and reference electrode. |
| Heavy Metals (Pb, Cd, Hg, As) | ICP-OES | Simultaneous multi-element quantification by measuring atomic emission intensities after plasma atomization and excitation. |
| Residual Solvents | Gas Chromatography (GC-FID) | Separates and quantifies volatile organic solvents based on retention time and flame ionization detection. |
| Microbial Contamination | Plate Count Agar (PCA) Method | Enumerates viable aerobic mesophilic microorganisms by colony formation after incubation. |
| Ash Content | Gravimetric Analysis | Measures inorganic residue mass after high-temperature incineration at 550 C. |
| Specific Absorbance (A1%,280nm) | UV-Vis Spectrophotometry | Calculates absorbance per 1 g/dL solution at 280 nm to assess purity and protein folding integrity. |
| Particle Size Distribution | Laser Diffraction | Determines size distribution by analyzing angular variation in laser light scattering from dispersed particles. |
| Loss on Drying (LOD) | Thermogravimetric Analysis | Measures mass loss upon heating to 105 C under controlled airflow to estimate volatile content. |
| Endotoxin Level | Limulus Amebocyte Lysate (LAL) Assay | Detects bacterial endotoxins via coagulation cascade activation in horseshoe crab blood lysate. |
| Test Item | Specification |
|---|---|
| Appearance | Off-white to light brown powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.2% |
| Single Impurity | <=0.3% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=1.0% |
| Odor | Characteristic mild enzymatic odor |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
1. How do you ensure product quality consistency?
We rely on a mature China-based manufacturing system and implement strict batch control and quality inspection for every shipment. Our production process complies with ISO 9001 standards, and a COA is provided for each batch to ensure consistent and reliable quality.
2. Do you offer competitive pricing for bulk orders?
Yes, as a China-based manufacturer and bulk supplier, we provide tiered pricing based on order volume. We support FOB and CIF quotations, as well as L/C payment terms for large transactions to meet international trade requirements.
3. Can you support large-volume or long-term supply?
We have stable production capacity and a well-established supply chain, enabling continuous bulk supply. We support ton-level and container-level orders, as well as long-term cooperation projects.
4. What is your typical lead time?
For in-stock products, shipment can be arranged within 1–3 days. For bulk packaging or customized orders, lead time depends on the specific quantity and production schedule.
5. What documents do you provide?
We can provide complete documentation upon request, including COA, SDS, TDS, and other compliance certificates, meeting industrial procurement and export requirements.
6. Can you customize product specifications or packaging?
Yes, we support customization of parameters such as purity, impurities, residual solvents, and heavy metals. We also offer various bulk packaging options, including 25kg bags, drums, and IBC tanks, suitable for industrial applications and transportation.
7. What shipping options do you support?
We support both FCL (Full Container Load) and LCL (Less than Container Load) shipments, and can flexibly arrange logistics solutions based on order size to meet bulk chemical export needs.
8. Do you provide technical or application support?
Yes, we provide basic application guidance and technical support based on industry experience to help customers optimize product usage.
9. How do you handle compliance and export regulations?
We are familiar with international trade and export regulations, ensuring all products comply with relevant requirements. We also provide complete documentation to support smooth customs clearance and global delivery.