China Factory Direct
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| CAS number | 4852-22-6 |
| Product name | Procyanidin |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeFood GradeCosmetic Grade |
| Packaging | 25KG/bag500KG/bag1000KG/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 | Natural Antioxidant | Added to food products to extend shelf life |
| Pharmaceutical Industry | Antioxidant and Anti-inflammatory | Used in the formulation of dietary supplements or pharmaceutical preparations |
| Pharmaceutical Industry | Cardiovascular Health Support | Applied as an adjunctive therapy for cardiovascular diseases |
| Cosmetics Industry | Antioxidant and Anti-aging | Formulated into skincare products |
| Cosmetics Industry | Skin Brightening and Moisturizing | Used in skin-brightening and moisturizing cosmetic formulations |
| Dietary Supplements | Immune System Support | Manufactured into oral dosage forms such as capsules and tablets |
| Agriculture | Plant Growth Regulation | Applied as a natural extract for plant protection |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (PAC content) | UV-Vis Spectrophotometry | Measures absorbance at 520 nm after acid-catalyzed cleavage to anthocyanidins; quantifies total proanthocyanidins based on cyanidin chloride standard. |
| Identification | HPLC-DAD or HPLC-MS | Compares retention time, UV-Vis spectrum, and/or mass fragmentation pattern against reference standard. |
| Loss on Drying | Gravimetric (Thermogravimetry) | Determines volatile matter by weight loss after drying at 105 C for 2 hours. |
| Residue on Ignition | Gravimetric (Sulfated Ash) | Measures inorganic residue after charring and incineration at 600 C. |
| Heavy Metals (Pb, Cd, As, Hg) | ICP-MS | Quantifies trace metal elements by plasma ionization and mass spectrometric detection. |
| Arsenic | Hydride Generation-AAS | Converts arsenic to arsine gas, then measures atomic absorption at 193.7 nm. |
| Lead | Graphite Furnace-AAS | Atomizes sample in graphite tube and measures absorption at 283.3 nm for sensitive Pb detection. |
| Microbial Limits | Plate Count (TAMC/ TYMC) | Quantifies aerobic mesophilic bacteria and yeasts/molds via membrane filtration or pour plate on appropriate agar media. |
| E. coli | Presence/Absence Test (Liquid Enrichment + Confirmation) | Detects growth in selective broth followed by IMViC or chromogenic confirmation. |
| Salmonella | Presence/Absence Test (Enrichment + Selective Plating) | Uses pre-enrichment and selective isolation on XLD or BS agar with biochemical confirmation. |
| Solvent Residues (e.g., Ethanol, Acetone) | GC-FID | Separates and quantifies residual solvents using capillary column and flame ionization detection. |
| pH (1% aqueous solution) | Potentiometric Titration | Measures hydrogen ion activity using calibrated pH electrode in a standardized aqueous suspension. |
| Test Item | Specification |
|---|---|
| Appearance | Brownish amorphous solid |
| Purity | >=98.0% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
| Optical Rotation | -15° to -25° (c=1, in methanol) |
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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.