Poly-L-lysine Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 25104-18-1 |
| Product name | Poly-L-lysine |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeCosmetic 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) |
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Documents We Provide for Poly-L-lysine
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Poly-L-lysine Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Poly-L-lysine
| Industry | Application | Process |
|---|---|---|
| Food Industry | Natural preservative effective against Gram-positive bacteria, Gram-negative bacteria, and fungi | Added to beverages, dairy products, sushi, noodles, and baked goods; typically used at 50–200 ppm within a pH range of 3.0–7.0 |
| Cosmetics Industry | Preservative and humectant that enhances skin barrier function | Incorporated into aqueous formulations such as lotions, serums, and masks; commonly used at 0.001–0.01% (w/w) |
| Pharmaceuticals/Biotechnology | Drug delivery vehicle, gene transfection reagent, and component of antimicrobial dressings | Formed into nanocomplexes with nucleic acids or drugs via electrostatic interactions; applied for surface modification to improve biocompatibility and antimicrobial properties of materials |
| Agriculture | Biopesticide adjuvant and seed treatment agent for suppression of plant pathogenic microorganisms | Co-formulated with biocontrol agents such as Bacillus subtilis for rice and vegetable seed coating or foliar application |
Manufacturing Quality Control of Poly-L-lysine
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Poly-L-lysine content) | Acid-base titration with standardized HCl | Quantifies free amino groups by back-titration after reaction with excess HCl. |
| pH (1% aqueous solution) | Potentiometric pH measurement | Measures hydrogen ion activity using calibrated pH electrode in aqueous solution. |
| Loss on drying (LOD) | Gravimetric analysis at 105 C | Determines volatile content by mass loss after controlled heating to constant weight. |
| Residue on ignition | Gravimetric ash analysis at 500-600 C | Measures inorganic impurities remaining after high-temperature combustion. |
| Heavy metals (Pb, Cd, As, Hg) | ICP-MS or ICP-OES | Quantifies trace metal elements via atomic emission or mass spectrometry after acid digestion. |
| Chloride content | Argentometric titration (Mohr method) | Determines chloride ions by precipitation titration with standardized AgNO3 solution. |
| Molecular weight distribution | Size exclusion chromatography (SEC) | Separates polymer chains by hydrodynamic volume using calibrated columns and UV detection. |
| Specific optical rotation | [alpha]D measurement using polarimeter | Measures rotation of plane-polarized light induced by chiral L-lysine residues in solution. |
| Water content | Karl Fischer coulometric titration | Quantifies water via electrochemical iodine generation and stoichiometric reaction with sample. |
| Microbial contamination (Total aerobic count) | Plate count agar culture method | Estimates viable mesophilic bacteria by colony formation on nutrient agar after incubation. |
| Endotoxin level | Limulus amebocyte lysate (LAL) assay | Detects bacterial endotoxins via enzymatic cascade causing gel formation or color change. |
| Related substances (degradation products) | Reversed-phase HPLC with UV detection | Separates and quantifies impurities and degradation products based on hydrophobicity and UV absorbance. |
Technical Specifications of Poly-L-lysine
| Test Item | Specification |
|---|---|
| Appearance | White solid |
| Purity | >=98.5% (HPLC) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.5% |
| Optical Rotation | +25° to +35° (c=1, 1M HCl) |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
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Download COA of Poly-L-lysine
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Poly-L-lysine
Packaging of Poly-L-lysine
Industrial Poly-L-lysine Procurement FAQ
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.
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