Cysteine
✓ EU AllowedIdentification
CAS Number 52-90-4
EINECS / EC 200-158-2
CosIng Ref 75422
Chemical Name (2R)-2-amino-3-sulfanylpropanoic acid
IUPAC Name —
Formula C3H7NO2S
Mol. Weight 121.16 g/mol
SMILES C(C(C(=O)O)N)S
InChIKey XUJNEKJLAYXESH-REOHCLBHSA-N
Function & Classification
Primary Function Antioxidant
Secondary Functions ANTISTATIC; HAIR CONDITIONING; HAIR WAVING OR STRAIGHTENING; FRAGRANCE; REDUCING
Category Vitamins & Antioxidants
EU Regulatory Status
Safety Profile
No toxicology data available yet for this ingredient.
Check SCCS opinions or CIR reports for published safety assessments.
NOAEL · Dermal Absorption % · Sensitization
Formulation Guidelines
Usage level, pH range, solubility and addition phase not yet available.
Usage Level % · Addition Phase · Solubility
Suppliers & Documents
No verified suppliers listed for this ingredient yet.
Are you a supplier of Cysteine? Register as a supplier to add your listing and upload TDS & SDS documents.
Documents