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CAS No. 52-90-4
Chemical Name: L-Cysteine
Synonyms: CYS;CYSH;E 920;L-Cys;Cystein;NSC-8746;CYSTEINE;H-CYS-OH;FEMA 3263;Thioserine
CBNumber: CB7388480
Molecular Formula: C3H7NO2S
Formula Weight: 121.16
MOL File: 52-90-4.mol
 
 
 
 
L-Cysteine Property
mp : 220 °C (dec.)(lit.)
 
 
alpha : 8.75 º (c=12, 2N HCl)
 
FEMA : 3263
 
refractive index : 8.8 ° (C=8, 1mol/L HCl) 
 
storage temp. : Store at RT.
 
solubility : H2O: 25 mg/mL
 
 
Water Solubility : 280 g/L (25 ºC)
 
Sensitive : Air Sensitive
 
Merck : 14,2781
 
BRN : 1721408
 
Stability:: Stability Stable, but may be air sensitive. Incompatible with oxidizing agents, bases.
 
CAS DataBase Reference: 52-90-4(CAS DataBase Reference)
 
NIST Chemistry Reference: L-Cysteine(52-90-4)
 
EPA Substance Registry System: L-Cysteine(52-90-4)
 
 
Safety
Hazard Codes : Xn,Xi
 
Risk Statements : 22-36/37/38-20/21/22
 
Safety Statements : 36-37/39-26
 
WGK Germany : 3
 
 
RTECS : HA1600000
 
 
F : 10-23
 
HS Code : 29309012
 
Hazardous Substances Data: