L-CYSTEINE For Biochemistry

Description

Physical state at 20 °C	Solid	Colour	Colorless crystalline
Melting point/ Freezing point [°C]	220 °C	Solubility in water [% weight]	Appreciable (> 10%)

Appearance	Colorless crystalline powder
Assay	Min. 99%
Specific optical rotation ([α]20/D)	+8.0° to +9.0°
UV absorbance	Max. 0.5
Loss on drying (at 105°C; 4 hrs)	Max. 0.3%
Chloride (Cl)	Max. 0.002%
Sulphate (SO4)	Max. 0.01%
Heavy metal (as Pb)	Max. 0.001%
Ammonium (NH4)	Max. 0.01%
Foreign amino acids	Max. 0.5%
Other ninhydrin positive substances (as glycine)	Max. 0.1%

Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H302

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