L-CYSTEINE HYDROCHLORIDE MONOHYDRATE For Biochemistry

Description

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
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 (at 589 nm) (c=8, 6 N HCl) on dried substance	+5.5° to +7.0°
Loss on drying (at R.T.; pressure max 5 mm of mercury; 24 hrs)	8.0 – 12.0%

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

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