Name: L-Cysteine
Cas: 52-90-4
Purity: 99%
MOQ: 1KG
Chemical Structure

Basic Info
Product Introduction
| Melting point | 240 °C (dec.) (lit.) |
| alpha | 8.75 º (c=12, 2N HCl) |
| Boiling point | 293.9±35.0 °C(Predicted) |
| bulk density | 300kg/m3 |
| density | 1.197 (estimate) |
| FEMA | 3263 | L-CYSTEINE |
| refractive index | 8.8 ° (C=8, 1mol/L HCl) |
| storage temp. | Store below +30°C. |
| solubility | H2O: 25 mg/mL |
| pka | 1.92(at 25℃) |
| form | Solid |
| color | White |
| PH | 4.5-5.5 (100g/l, H2O, 20℃) |
| Odor | sulfury |
| Odor Type | sulfurous |
| Optical Rotation | Optical rotation: +8° to +9° (c = 5, 1 N HCl, 20°C). |
| biological source | non-animal source |
| Water Solubility | 280 g/L (25 ºC) |
Product Packaging
Frequently Asked Questions for Foreign Trade Procurement
We are an authentic physical manufacturer of L-cysteine for export, with our own supply and secure assembly line. We offer first-hand supply throughout the process and do not take part in intermediary profession. All exported products follow international standards, with well balanced and stable set quality. Each order can give a formal high quality assessment report and a total set of export records, supporting third-party tasting and examination of items, guaranteeing full quality assurance.
The normal foreign trade order has a secure cycle of concerning 10 days from equipping to shipment completion. If customers have urgent production and replenishment demands, we can prioritize order placement, personalizeds clearance, and shipping, and totally cooperate with clients’ production and sales progression, supplied that stock is sufficient.
Our items are all sealed and moisture-proof packaging specifically created for international trade, appropriate for long-distance cross-border transportation. Under normal circumstances, there is essentially no loss or wetness problems. Clients can simply check the amount and make certain that the product packaging is intact when getting the goods. Daily storage just calls for securing in a cool, completely dry, and aerated setting, avoiding heat and damp locations. The properties of the raw materials can be kept secure for a very long time.
Related References
Manufacturer of L-Cysteine
Pre-Sales Service
* Timely reply and 24 hours online, the professional team will provide you with the most favorable prices and high-quality products.
* The sample supports testing and inspection.
* Each batch of products will be tested to ensure that its quality meets user needs.
*Packaging can also be made according to customer requirements.
*Any inquiries will be answered by our relevant personnel within 24 hours.
*We will provide you with commercial invoice, packing list, packing list, COA, health certificate and certificate of origin if you need it. If your market has other special requirements, please let us know.
After-Sales Service
*We will monitor the logistics information in real time and will share the information with you.
* You can consult us at any time if you have any questions about the product, and we will answer you in time.
*If you have any questions about the product, you can report it to us, we will deal with it in time for you, and the product can be returned.
1. For products ≤50kg, we recommend using express delivery, which is usually called DDU service (discounted, convenient).
2. For products ≤500kg, we generally recommend air freight, which is usually called FOB, CFR or CIF service (fast and efficient).
3. For products >500kg, we generally recommend shipping by sea, which is usually called FOB, CFR or CIF service (economical, safe).
4. For high-value products, please choose air or express to ensure the safety of product transportation.





