S-Carboxymethyl-L-Cysteine Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 638-23-3 |
| Product name | S-Carboxymethyl-L-Cysteine |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical 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 S-Carboxymethyl-L-Cysteine
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk S-Carboxymethyl-L-Cysteine Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of S-Carboxymethyl-L-Cysteine
| Industry | Application | Process Description |
|---|---|---|
| Pharmaceuticals | Pharmaceutical intermediate | Used in the synthesis of sulfur-containing amino acid-based drugs; serves as a precursor in peptide synthesis |
| Cosmetics | Ingredient in skincare products | Applied as an antioxidant or active ingredient in anti-aging formulations |
| Food industry | Food additive | Used as a flavor enhancer or stabilizer |
| Biochemical research | Biochemical reagent | Applied in protein modification and enzyme reaction studies, among other biomolecular experiments |
| Pesticide industry | Pesticide synthesis intermediate | Used as an organic synthesis intermediate in the preparation of pesticide active ingredients |
Manufacturing Quality Control of S-Carboxymethyl-L-Cysteine
| Detection Item | Common Testing Methods | Method Overview |
|---|---|---|
| Identification Test | Infrared Spectroscopy (IR) | Compares the infrared absorption spectrum of the test sample with that of the reference standard to confirm consistency in molecular structural characteristics. |
| Thin Layer Chromatography (TLC) | Develops the sample and reference standard on a silica gel plate, comparing Rf values and spot visualization for preliminary identification. | |
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Uses a reversed-phase C18 column with UV detection (typically at 210–220 nm), quantifying via external standard method or area normalization. |
| Non-aqueous Titration | Titration in non-aqueous solvents using perchloric acid, with endpoint detection by potentiometry or indicator method; suitable for content determination of raw materials. | |
| Related Substances / Impurity Testing | HPLC (Gradient Elution) | Optimizes gradient mobile phase to separate the main component from potential impurities (e.g., unreacted substances, degradation products), with established acceptance limits. |
| Drying Loss | Drying Method | Sample is dried at 105°C to constant weight; the percentage of mass loss is calculated to control moisture and volatile substances. |
| Residue on Ignition | High-Temperature Ashing Method | Sample is ignited at high temperature (600–800°C), and the weight of residual inorganic matter is determined to assess total inorganic impurities. |
| Heavy Metals | Thioacetamide Method or ICP-MS | Thioacetamide colorimetric method as per Chinese Pharmacopoeia, or more sensitive ICP-MS for determining trace elements such as lead, arsenic, and cadmium. |
| pH Value | pH Meter Measurement | Measures pH of a solution prepared at a specified concentration using a calibrated pH meter, ensuring acidity/basicity falls within the required range. |
| Specific Rotation | Polarimeter Measurement | Determines optical rotation of a solution at a defined concentration under sodium D-line light at 20°C, verifying optical purity and stereochemical configuration. |
| Moisture Content | Karl Fischer Titration (Volumetric or Coulometric) | Highly specific and accurate method for measuring trace water content, especially critical for hygroscopic compounds. |
| Residual Solvents | Gas Chromatography (GC) with Headspace Injection | Headspace GC-FID or GC-MS analysis according to ICH Q3C guidelines to determine levels of organic solvent residues such as methanol and ethanol. |
Technical Specifications of S-Carboxymethyl-L-Cysteine
| Test Item | Specification |
|---|---|
| Appearance | White solid |
| Purity | >=98.0% |
| Water Content (KF) | <=0.5% |
| Melting Point | 178-182°C |
| Optical Rotation | -15.0° to -17.0° (c=1, in 1M HCl) |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
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 S-Carboxymethyl-L-Cysteine
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of S-Carboxymethyl-L-Cysteine
Packaging of S-Carboxymethyl-L-Cysteine
Industrial S-Carboxymethyl-L-Cysteine 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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