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Amino Acids & Derivatives
L-CYSTEINE HYDROCHLORIDE MONOHYDRATE
L-CYSTEINE HYDROCHLORIDE MONOHYDRATE For Biochemistry
Confirms to USP (Stereospecific,irreversible inhibitor of histidene,ammonia-lyase.)
Article No.
03141
Grade
For Biochemistry
Purity
98.5%
CAS No.
7048-04-6
Molecular Formula
C
3
H
8
ClNO
2
S.H
2
O
Molecular Weight
175.64
H.S. Code
2930.9040
Shelf Life
60 Months
MSDS
DE
EN
FR
KO
PT
ES
TH
TR
Certificate of Analysis (COAs)
Physical Properties
Physical state at 20 °C
Solid
Colour
Colorless crstals
pH value
1 - 2
Melting point/ Freezing point [°C]
176°C
Solubility in water [% weight]
100 g/l at 25 °C
Packings
25 g
(00025)
100 g
(00100)
500 g
(00500)
1000 g
(01000)
Specifications
Appearance
White crystals or crystalline powder
Assay (on anhydrous basis)
98.5 - 101.5%
Identity (IR)
Passes test
Residue on ignition
Max. 0.4%
Sulphate (SO4)
Max. 0.03%
Iron (Fe)
Max. 0.003%
Heavy metal (as Pb)
Max. 0.0015%
Related compounds
Passes test
Individual impurities
Max. 0.5%
Total impurities
Max. 2.0%
Specific optical rotation ([α]20/D)
+5.7° to +6.8°
Loss on drying (at R.T.; pressure max 5 mm of mercury; 24 hrs)
8.0 - 12.0%
Safety Information and Hazard Symbols
Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H315-H319-H335
Precaution Statement: P261-P305 + P351 + P338
Revision Date :
01-Apr-2017