L-Cystine hydrochloride Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 34760-60-6 |
| Product name | L-Cystine hydrochloride |
| 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 L-Cystine hydrochloride
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk L-Cystine hydrochloride Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of L-Cystine hydrochloride
| Industry | Application | Process |
|---|---|---|
| Food Industry | Antioxidant | Used as a reducing agent in food processing to prevent oxidative discoloration |
| Pharmaceutical Industry | Synthetic drug intermediate | Applied in the synthesis of sulfur-containing amino acid-based drugs, such as cysteine derivatives |
| Cosmetics Industry | Humectant and antioxidant | Incorporated into skincare formulations to enhance skin moisturization and antioxidant capacity |
| Biochemical Research | Laboratory reagent | Used in biochemical experiments as an amino acid standard or reaction reagent |
| Feed Industry | Nutritional supplement | Added to animal feed as an amino acid supplement to support growth and health |
Manufacturing Quality Control of L-Cystine hydrochloride
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (L-Cystine Hydrochloride Content) | Acid-Base Titration | Quantifies active ingredient by titration with standardized NaOH using phenolphthalein indicator; based on neutralization of HCl salt. |
| Loss on Drying | Gravimetric (Oven Drying) | Measures volatile content by weight loss after drying at 105 C for 2 hours under standard atmospheric pressure. |
| Residue on Ignition | Gravimetric (Sulfated Ash) | Determines inorganic impurities by ignition of sample at 600-700 C followed by weighing of residual ash. |
| Chloride Content | Argentometric Titration (Mohr Method) | Quantifies chloride ions via precipitation titration with AgNO3 using potassium chromate indicator. |
| Sulfate Content | Barium Sulfate Gravimetry | Measures sulfate as insoluble BaSO4 precipitate formed after acid digestion and barium chloride addition. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Detects trace heavy metals by measuring absorbance of ground-state atoms in flame or graphite furnace. |
| Iron (Fe) Content | UV-Vis Spectrophotometry (1,10-Phenanthroline Method) | Forms colored Fe(II)-phenanthroline complex; absorbance measured at ~510 nm for quantification. |
| pH of Solution (1% w/v) | Potentiometric (pH Meter) | Determines hydrogen ion activity in aqueous solution using calibrated glass electrode system. |
| Specific Optical Rotation | Polarimetry | Measures rotation of plane-polarized light caused by chiral L-cystine molecules in solution. |
| Related Substances | High-Performance Liquid Chromatography (HPLC) | Separates and quantifies structural analogs and degradation products using reversed-phase C18 column and UV detection. |
| Water Content | Karl Fischer Titration | Determines water by volumetric or coulometric reaction with iodine, sulfur dioxide, and base in methanol medium. |
| Microbial Limits | Membrane Filtration & Plate Count | Quantifies aerobic microorganisms and detects specified pathogens (e.g., E. coli) per pharmacopeial guidelines. |
Technical Specifications of L-Cystine hydrochloride
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 220-225°C (decomposes) |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Residue on Ignition | <=0.1% |
| Optical Rotation | +6.0° to +7.5° (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 L-Cystine hydrochloride
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of L-Cystine hydrochloride
Packaging of L-Cystine hydrochloride
Industrial L-Cystine hydrochloride 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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