Cysteamine Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 60-23-1 |
| Product name | Cysteamine |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeMaterial GradeSpecialty GradeReagent 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 Cysteamine
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Cysteamine Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Cysteamine
| Industry | Applications | Process |
|---|---|---|
| Pharmaceuticals | Synthesis of antitumor agents (e.g., mesna), antidotes, and radioprotective agents | Used as a key intermediate in condensation and acylation reactions to construct thiol-containing bioactive molecular structures |
| Cosmetics | Reducing agent in permanent wave solutions and hair conditioners | Applied under alkaline conditions to cleave keratin disulfide bonds, enabling hair curl formation or smoothing treatment |
| Analytical Chemistry | Chelating agent for metal ions; derivatization reagent in chromatographic analysis | Forms stable complexes with heavy metal ions (e.g., Hg²⁺, Pb²⁺) for colorimetric or HPLC detection |
| Polymers | Chain terminator and modifier for polyurethanes and epoxy resins | Applied in addition reactions between thiol groups and isocyanate or epoxy functional groups to control molecular weight and introduce flexible segments |
| Agriculture | Intermediate for plant growth regulators; component of pesticide antidotes | Used in synthesizing sulfur-containing heterocyclic compounds or directly mitigating oxidative stress damage caused by organophosphate pesticide residues |
Manufacturing Quality Control of Cysteamine
| Test Item | Common Testing Method | Method Overview |
|---|---|---|
| Assay | High-Performance Liquid Chromatography (HPLC) | Uses a reversed-phase C18 column and UV detector (typically at 254–280 nm), with mobile phases such as phosphate buffer-methanol. Quantification of the main component is performed using external or internal standard methods, offering high specificity and good reproducibility. |
| Purity and Impurity Testing | High-Performance Liquid Chromatography (HPLC) | Same as above; separates the main peak from impurity peaks to detect related substances and calculate individual and total impurity levels. Commonly used for controlling residual solvents, degradation products, etc. |
| Water Content | Karl Fischer Titration | Bases on the reaction of iodine and sulfur dioxide with water in an anhydrous environment to accurately determine moisture content in samples. Suitable for compounds containing active hydrogen, such as mercaptoethylamine. |
| Heavy Metals | Atomic Absorption Spectroscopy (AAS) or Inductively Coupled Plasma Mass Spectrometry (ICP-MS) | After sample digestion, determines residual levels of heavy metal elements such as lead, cadmium, mercury, and arsenic, ensuring compliance with pharmacopoeial limits for injectable-grade raw materials. |
| Sulfhydryl Group (-SH) Content | Iodometric Method or DTNB Method (Ellman's Reagent Method) | Iodometric Method: Based on the redox reaction between sulfhydryl groups and iodine; -SH content is calculated from the amount of standard iodine solution consumed during titration. DTNB Method: DTNB reagent reacts with -SH to form a yellow compound, which is quantified by measuring absorbance at 412 nm. This method offers high sensitivity for determining free sulfhydryl content. |
| pH Value | pH Meter Method | The pH of a defined concentration of mercaptoethylamine aqueous solution (e.g., 1%) is directly measured using a pH meter to monitor acidity/alkalinity, reflecting stability and irritation potential. |
| Residual Solvents | Gas Chromatography (GC) | In accordance with ICH guidelines, detects organic solvents used during manufacturing (e.g., methanol, ethanol, dichloromethane) using headspace sampling, capillary column separation, and flame ionization detection (FID). |
| Crystal Form / Solid-State Properties | Differential Scanning Calorimetry (DSC) or X-Ray Diffraction (XRD) | Used for polymorphic analysis to assess the crystalline state of the active pharmaceutical ingredient, ensuring batch-to-batch consistency, especially for solid forms of mercaptoethylamine salts (e.g., hydrochloride salt). |
| Microbial Limits | Microbial Limits Test | Performs total aerobic microbial count, mold and yeast count, and specified organism testing (e.g., *Escherichia coli*) according to requirements of the Chinese Pharmacopoeia or USP. Applicable for non-sterile raw materials. |
| Bacterial Endotoxins | Limulus Amebocyte Lysate (LAL) Test | If used as a raw material for injectable formulations, bacterial endotoxin testing is required. Gel-clot or kinetic turbidimetric methods are employed to control pyrogenic risks. |
Technical Specifications of Cysteamine
| Test Item | Specification |
|---|---|
| Appearance | Colorless to light yellow liquid |
| Assay | 29.0%~30.0% |
| pH | 9.5~11.0 |
| Fe | ≤3 ppm |
| NaCl | ≤1.0% |
| As | ≤2 ppm |
| Hevay metals | ≤5 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 Cysteamine
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Cysteamine
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Industrial Cysteamine 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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