China Factory Direct
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| CAS number | 25513-46-6 |
| Product name | Polyglutamic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeFood 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 |
|---|---|---|
| Cosmetics | Humectant | Incorporated into skincare products such as creams, serums, and face masks to enhance skin hydration through strong water-retention capability |
| Agriculture | Soil conditioner | Applied in combination with fertilizers to improve soil water- and nutrient-holding capacity, thereby increasing nutrient use efficiency |
| Agriculture | Foliar fertilizer additive | Formulated into foliar sprays to promote adhesion and absorption of nutrients on plant surfaces |
| Food industry | Food preservative | Used in edible coatings for fruits and vegetables or incorporated into packaging materials to extend shelf life |
| Pharmaceuticals | Drug carrier | Employed as a nanosphere or microsphere material in the construction of targeted drug delivery systems |
| Water treatment | Coagulant/flocculant | Applied in wastewater treatment to induce flocculation and sedimentation of suspended solids, offering the advantage of biodegradability |
| Biomaterials | Scaffold material for tissue engineering | Processed via crosslinking or copolymerization into three-dimensional porous scaffolds to support cell growth |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Assessment of physical state and color under controlled lighting conditions. |
| Moisture Content | Karl Fischer Titration | Quantitative determination of water by reaction with iodine in a methanol-based reagent. |
| pH Value | Potentiometric pH Measurement | Measurement of hydrogen ion activity using a calibrated glass electrode system. |
| Viscosity | Rotational Viscometry | Determination of resistance to flow under controlled shear rate and temperature. |
| Molecular Weight Distribution | Size Exclusion Chromatography (SEC) | Separation based on hydrodynamic volume in solution, calibrated with polyacrylamide standards. |
| Residual Monomer (Glutamic Acid) | High Performance Liquid Chromatography (HPLC) | Separation and quantification using reversed-phase column and UV detection at 200 nm. |
| Heavy Metals (Pb, Cd, As, Hg) | Inductively Coupled Plasma Mass Spectrometry (ICP-MS) | Multi-element detection via ionization in plasma and mass-selective detection. |
| Sulfated Ash | Gravimetric Analysis | Combustion at 550-600 C followed by weighing of inorganic residue after acid treatment. |
| Protein Content | Lowry Assay | Colorimetric quantification based on copper-protein complex formation and Folin-Ciocalteu reagent reduction. |
| Microbial Contamination | Membrane Filtration and Plate Count | Enumeration of viable aerobic microorganisms on tryptic soy agar after filtration and incubation. |
| Residual Solvents (e.g., Ethanol, Acetone) | Gas Chromatography (GC) with FID | Separation and detection of volatile organics using capillary column and flame ionization. |
| Total Nitrogen Content | Kjeldahl Method | Digestion, distillation, and titration to determine organic and inorganic nitrogen content. |
| Test Item | Specification |
|---|---|
| Appearance | White to off-white powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.5% |
| Solubility | Freely soluble in water; practically insoluble in ethanol and acetone |
| Odor | Characteristic mild 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.