DL-Lysine Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 70-54-2 |
| Product name | DL-Lysine |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical 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) |
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Documents We Provide for DL-Lysine
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk DL-Lysine Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of DL-Lysine
| Industry | Application | Process |
|---|---|---|
| Food Industry | Nutritional fortificant to enhance amino acid content in flour, bread, biscuits, and other food products | DL-lysine is produced via chemical synthesis or fermentation and subsequently incorporated into food products |
| Feed Industry | Animal feed additive to improve nutritional value and support animal growth | Lysine is produced via microbial fermentation or chemical synthesis and then blended into feed formulations |
| Pharmaceutical Industry | Key precursor in the synthesis of antibiotics (e.g., penicillin) | DL-lysine is prepared via chemical or biosynthetic routes for use as a pharmaceutical intermediate |
| Cosmetics Industry | Humectant and nutritive ingredient in skincare formulations | DL-lysine is obtained via chemical synthesis or bioextraction and then formulated into cosmetic products |
| Biotechnology | Precursor for the production of other amino acids or proteins | Genetically engineered microorganisms are employed in fermentation processes to produce DL-lysine |
Manufacturing Quality Control of DL-Lysine
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Assay | High-Performance Liquid Chromatography (HPLC) | Uses a reverse-phase chromatographic column (e.g., C18) with a UV detector or evaporative light scattering detector to quantify DL-lysine content by comparison with a reference standard. Derivatization (e.g., o-phthalaldehyde, OPA) is often employed to enhance detection sensitivity. |
| Amino Acid Automatic Analyzer | Employs an amino acid analyzer for separation via ion-exchange chromatography, followed by ninhydrin color development for quantification. Suitable for simultaneous analysis of multiple amino acids, including lysine. | |
| Identification Test | Infrared Spectroscopy (IR) | Performs infrared scanning of the sample and reference standard within the range of 4000–400 cm⁻¹ to compare characteristic absorption peaks (e.g., -NH₂, -COOH) to confirm structural consistency. |
| Thin-Layer Chromatography (TLC) | Uses a silica gel plate as the stationary phase; samples are developed with an appropriate mobile phase and visualized using ninhydrin reagent. Identification is based on comparison of Rf values between test and reference samples. | |
| Specific Rotation | Polarimetry | Measures the optical rotation of a sample solution using a polarimeter. DL-lysine is a racemic mixture with a theoretical specific rotation close to 0°, used to detect the presence of optically active impurities. |
| Loss on Drying | Thermogravimetric Analysis (TGA) or Oven Drying Method | Dries the sample at 105°C until constant weight is achieved; the percentage weight loss is calculated to determine residual moisture content. |
| Residue on Ignition | Sulfated Ash Method | The sample is carbonized at high temperature, treated with sulfuric acid, and then incinerated at 500–600°C. The weight of the residual ash is measured to assess inorganic impurity content. |
| Heavy Metals | Atomic Absorption Spectroscopy (AAS) | After sample digestion, heavy metal elements such as lead, cadmium, and mercury are quantified using an atomic absorption spectrometer to ensure compliance with pharmacopeial or food safety limits. |
| Inductively Coupled Plasma Mass Spectrometry (ICP-MS) | Offers higher sensitivity for detecting multiple trace metal elements, suitable for quality control of high-purity products. | |
| pH Value | pH Meter Method | Aqueous solution of DL-lysine (e.g., 1% w/v) is prepared and its pH is directly measured using a calibrated pH meter. |
| Chlorides | Silver Nitrate Turbidity Method | In acidic medium, silver nitrate is added to form a turbidity of silver chloride; quantification is performed by turbidimetry or ion chromatography to determine chloride ion content. |
| Sulfates | Turbidimetry or Ion Chromatography | Barium chloride is added to form barium sulfate precipitate, quantified by turbidimetry; alternatively, sulfate ions can be separated and detected via ion chromatography. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | HPLC is used to detect potential synthetic intermediates, degradation products, or other amino acid impurities. The percentage of each impurity peak area is calculated. |
| Microbial Limits | Microbial Culture Method | Performs total aerobic microbial count, mold, and yeast counts as per pharmacopeial requirements, along with tests for specified pathogens (e.g., Escherichia coli, Salmonella spp.). |
Technical Specifications of DL-Lysine
| Test Item | Specification |
|---|---|
| Appearance | White or similar white to yellowish crystalline powder |
| Identification | Meets the requirements |
| Assay | 98.5%~101.5% |
| Specific Rotation | -0.5°～ +0.5° |
| Chloride | ≤150ppm |
| Sulfate | ≤50ppm |
| Heavy Meta | ≤20ppm |
| Loss On Drying | 10.5%~12.0% |
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 DL-Lysine
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of DL-Lysine
Packaging of DL-Lysine
Industrial DL-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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