Common Name	L-Cysteine hydrochloride hydrate
CAS Number	7048-04-6
Molecular Weight	175.634
Density	N/A
Boiling Point	293.9ºC at 760 mmHg
Molecular Formula	C3H10ClNO3S
Melting Point	175°C
MSDS	Chinese USA
Flash Point	131.5ºC

Boiling Point	293.9ºC at 760 mmHg
Melting Point	175°C
Molecular Formula	C3H10ClNO3S
Molecular Weight	175.634
Flash Point	131.5ºC
Exact Mass	175.006989
PSA	111.35000
LogP	0.76610
Index of Refraction	6 ° (C=8, 1mol/L HCl)
Storage condition	Store at RT.
Stability	Stable. Incompatible with strong oxidizing agents, most common metals, hydrogen chloride.
Water Solubility	H2O: 1 M at 20 °C, clear, colorless

CHEMICAL IDENTIFICATION
RTECS NUMBER :
HA2285000
CHEMICAL NAME :
L-Cysteine, hydrochloride, monohydrate
CAS REGISTRY NUMBER :
7048-04-6
LAST UPDATED :
199504
DATA ITEMS CITED :
2
MOLECULAR FORMULA :
C3-H7-N-O2-S.Cl-H.H2-O
MOLECULAR WEIGHT :
175.65
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
3564 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
JJANAX Japanese Journal of Antibiotics. (Japan Antibiotics Research Assoc., 2-20-8 Kamiosaki, Shinagawa-ku, Tokyo 141, Japan) V.21- 1968- Volume(issue)/page/year: 41,105,1988 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X9440 No. of Facilities: 196 (estimated) No. of Industries: 2 No. of Occupations: 6 No. of Employees: 1414 (estimated) No. of Female Employees: 879 (estimated)

Personal Protective Equipment	dust mask type N95 (US);Eyeshields;Gloves
Hazard Codes	Xi:Irritant
Risk Phrases	R36/37/38
Safety Phrases	S26-S36
RIDADR	NONH for all modes of transport
WGK Germany	3
RTECS	HA2285000
HS Code	29309013

N/A