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7048-04-6

Name L-Cysteine hydrochloride monohydrate
CAS 7048-04-6
EINECS(EC#) 200-157-7
Molecular Formula C3H10ClNO3S
MDL Number MFCD00065606
Molecular Weight 175.63
MOL File 7048-04-6.mol
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Chemical Properties

Appearance white crystalline powder
Melting point  175°C
alpha  +6.0～+7.5゜ (20℃/D)(c=8,6mol/l HCl)(calculated on the dried basis)
density  1.54 g/cm3
vapor pressure  <0.1 hPa (20 °C)
refractive index  6 ° (C=8, 1mol/L HCl)
storage temp.  Store at RT.
solubility  H2O: 1 M at 20 °C, clear, colorless
form  Solid
color  White
PH 0.8-1.2 (100g/l, H2O, 20℃)
PH Range 1 - 2
Stability: Stable. Incompatible with strong oxidizing agents, most common metals, hydrogen chloride.
optical activity [α]20/D +5.6±0.3°, c = 5% in 5 M HCl
Water Solubility  Soluble in cold water.
Sensitive  Hygroscopic
λmax λ: 260 nm Amax: 1.0
λ: 280 nm Amax: 0.3
Merck  14,2781
BRN  5158059
LogP 0.235 (est)
CAS DataBase Reference 7048-04-6(CAS DataBase Reference)
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Safety Data

Hazard Codes  Xi
Risk Statements 
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
WGK Germany  3
RTECS  HA2285000
F  3-10-23
TSCA  Yes
HS Code  29309099

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