Specifications
l-cysteine hcl anhydrousCAS No 52-89-1
EC No 200-157-7
Formula C3H7NO2S
l-cysteine hcl anhydrous
DETAILED DELIVERY SPECIFICATIONS
Specific rotation[]D20: 5.6 to 8.9
State of solution(transmittance): Clear and colorless 98.0% min.
Heavy metals [Pb]: 10ppm max.
Arsenic[As2O3]: 1ppm max.
Other amino acids: Chromatographically not detectable
Loss on drying: 1.0% max
Residue on ignition[sulfated]: 0.10% max.
Assay: 98.0%-102.0% min.
PH: 1.5 ~ 2.0