L-CYSTEINE HYDROCHLORIDE (MONOHYDRATE) (FOR BIOCHEMISTRY)

Article No.	Grade	Purity	Cas no.	Molecular Formula	Molecular Weight	H.S. Code	Shelf Life
C0081200500	For Biochemistry	98.5%	7048-04-6	C₃H₈ClNO₂S.H₂O	175.64	2930.9040	60 Months

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

Appearance:	White crystals or crystalline powder
Identity (IR):	Passes test
Sulphate (SO4):	Max. 0.03%
Heavy metal (as Pb):	Max. 0.0015%
Iron (Fe):	Max. 0.003%
Assay (on anhydrous basis):	98.5 - 101.5%
Residue on ignition:	Max. 0.4%
Related compounds:	Passes test
Individual impurities:	Max. 0.5%
Total impurities:	Max. 2.0%
Loss on drying (at R.T.; pressure max 5 mm of mercury; 24 hrs) :	8.0 - 12.0%
Specific optical rotation ([α]20/D):	+5.7° to +6.8°

Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H315-H319-H335
Precaution Statement: P261-P305 + P351 + P338