D-Cysteine hydrochloride Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 32443-99-5 |
| Product name | D-Cysteine hydrochloride |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeReagent 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 D-Cysteine hydrochloride
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk D-Cysteine hydrochloride Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of D-Cysteine hydrochloride
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Intermediate in the synthesis of antibiotics, antiviral agents, and antioxidants | Used as an amino acid raw material in peptide synthesis and drug molecule construction |
| Biotechnology | Component of culture media for cell culture and microbial fermentation | Added to liquid or solid culture media to supply essential amino acids and maintain a reducing environment |
| Food Additives | Antioxidant and nutritional fortifier | Applied in food processing to prevent oxidative spoilage and enhance nutritional value |
| Cosmetics | Active ingredient in skincare products for skin brightening and anti-aging | Incorporated into creams and serums to stabilize formulations and modulate skin redox balance |
| Chemical Reagents | Reference standard for biochemical research and analysis | Used as a reducing agent or reaction intermediate in protein structure studies and enzyme activity assays |
Manufacturing Quality Control of D-Cysteine hydrochloride
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (D-Cysteine HCl) | Acid-Base Titration with NaOH | Neutralization of hydrochloride salt using standardized sodium hydroxide solution, with methyl red indicator. |
| Specific Optical Rotation | [alpha]D | Measurement of rotation of plane-polarized light at 20 C using sodium D-line (589 nm) in aqueous solution. |
| Loss on Drying | Gravimetric (Thermogravimetry) | Weight loss determined after drying sample at 105 C to constant weight under controlled conditions. |
| Residue on Ignition | Gravimetric (Sulfated Ash) | Residue mass after high-temperature incineration (700-800 C) following sulfuric acid treatment. |
| Heavy Metals (as Pb) | AAS or ICP-OES | Quantification of total heavy metals by atomic absorption spectroscopy or inductively coupled plasma optical emission spectrometry after acid digestion. |
| Chloride Content | Argentometric Titration (Mohr method) | Precipitation titration with silver nitrate using potassium chromate indicator to detect endpoint. |
| Sulfate Content | Gravimetric (Barium Sulfate) | Precipitation as BaSO4 followed by filtration, drying, and weighing of the precipitate. |
| pH of Aqueous Solution | Potentiometric (pH meter) | Measurement of hydrogen ion activity in a 1% w/v aqueous solution at 25 C using calibrated pH electrode. |
| Related Substances | HPLC with UV detection | Separation and quantification of impurities using reversed-phase HPLC and UV absorbance at 210 nm. |
| Water Content | Karl Fischer Titration | Volumetric or coulometric determination of water based on iodine-sulfur dioxide reaction in pyridine-methanol medium. |
| Microbial Limits | Membrane Filtration or Plate Count | Enumeration of aerobic mesophilic bacteria and detection of specified pathogens per pharmacopoeial methods. |
| Appearance | Visual Inspection | Assessment of physical form, color, and clarity against standard reference under controlled lighting. |
Technical Specifications of D-Cysteine hydrochloride
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.0% (HPLC) |
| Water Content (KF) | <=0.5% |
| Optical Rotation | -6.4 to -5.8 deg (c=1, H2O) |
| Melting Point | 175–179 °C (dec.) |
| Total Impurities | <=2.0% (HPLC) |
| Heavy Metals | <=10 ppm (as Pb) |
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 D-Cysteine hydrochloride
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of D-Cysteine hydrochloride
Packaging of D-Cysteine hydrochloride
Industrial D-Cysteine 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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