CYSTINE- ▸ Dough conditioner: Reducing agent and dough strengthener in baking.
- ▸ Flavoring agent: Food flavor ingredient.
- ▸ Nutritional supplement: Soluble amino-acid ingredient.
- ▸ Cosmetic ingredient: Reducing and hair-conditioning agent.
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →L-Cysteine Hydrochloride (anhydrous) is the hydrochloride salt of the sulfur-containing amino acid L-cysteine. It is used as a reducing agent and dough conditioner in baking, as a flavoring agent and nutritional supplement, and as a reducing/hair-conditioning ingredient in cosmetics.
Frequently Asked Questions
What is L-cysteine hydrochloride anhydrous used for?
L-Cysteine Hydrochloride (anhydrous) is the hydrochloride salt of the sulfur-containing amino acid L-cysteine, used as a reducing agent and dough conditioner in baking, as a flavoring agent and nutritional supplement, and as a reducing/hair-conditioning ingredient in cosmetics. RawSource supplies it as a bulk raw material to food and personal-care manufacturers.
What is the difference between L-cysteine HCl and L-cysteine base?
The HCl form is the hydrochloride salt, which is more readily water-soluble than the free base (CAS 52-90-4) and is supplied here in the anhydrous (water-free) form rather than as the monohydrate. Formulators choose the salt for solubility and the anhydrous grade for assay consistency in dry systems. We stock both forms.
Is L-cysteine HCl anhydrous the same as the monohydrate?
No. The anhydrous grade contains no water of crystallization, while the monohydrate (a separate grade) carries one bound water molecule, giving a different cysteine assay per gram. Specify anhydrous on your order; the exact grade and assay are documented on the CoA.
How is L-Cysteine HCl anhydrous sold in bulk?
It is supplied as a crystalline powder in industrial packaging (bags, drums) sized for baking, food, and cosmetic manufacturing. Contact us for bulk pack sizes, minimum order quantity, available grade, lead time, and a current quote. CoA and SDS accompany every shipment.
What is the HS classification for L-Cysteine HCl?
As an organo-sulfur amino-acid salt, L-cysteine hydrochloride is classified under HS subheading 2930.90 (organo-sulfur compounds: other); confirm the exact subheading with your broker. The reference free-acid CAS is 52-90-4. Full identity and specification data are provided on the CoA.