Cystine is the amino acid formed by the oxidation of two cysteine molecules that covalently link via a disulfide bond. This organosulfur compound has the formula (SCH2CH(NH2)CO2H)2. It is a white solid that is slightly soluble in water. Human hair and skin contain approximately 10-14% cystine by mass.
| Item | STANDARD |
| Specific rotatory power[α] D20 | -215º -225º |
| Clarity | >= 98.0% |
| Ammonium salt[NH4] | =< 0.02% |
| Chloride[CL] | =< 0.02% |
| Residue on ignition | =< 0.10% |
| Sulfate[SO4] | =< 0.02% |
| Iron salt[Fe] | =< 10 ppm |
| Heavy metal[Pb] | =<10 ppm |
| Arsenic salt | =<1 ppm |
| Other amino acid | Color layer can not be checked out. |
| Loss on drying | 0.20% |
| Content | 98.5 -101.0% |
1, What kinds of certificates can you offer?
Chems is an ISO2008 9001 certified company, as for L-Cystine, we can offer HAPPC, KOSHER, HALAL Certificates, ect.
2, Is Chems a manufacturer or just a trading company?
Chems is both manufacturer and trading company, we are L-Cystine distributor, at the same time, we are manufacturer of other products.
3, What is the Min Order Quantity of L-Cystine?
Different products have different MOQ, for L-Cystine, the MOQ is 500kg.
4, What is the price of L-Cystine?
Chems is a famous supplier and manufacturer of L-Cystine in China, and has been corporate with many L-Cystine suppliers for several years, we can provide you with cost-effective L-Cystine.
5, How long shall we wait for your reply?
We can guarantee to reply your inquiries of L-Cystine in less than 24 hours in working days.
6, What kinds of transportation types can you provide?
Our main transportation methods include air transportation, land transportation and water transportation.
7, What kinds of payment terms can you accept?
The most commonly used payment terms are T/T, L/C, D/P, D/A, etc.
8, How long will I receive my good?
Chems has its own EDC warehouse in Shanghai, when your purchase order has been confirmed, inventory products will deliver within 1 week, other products delivery in 2 weeks.