L-CYSTEINE For Biochemistry

(R)-2-Amino-3-mercaptopropionic acid

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Article No.
03140
Grade
For Biochemistry
Purity
99%
CAS No.
52-90-4
Molecular Formula
C3H7NO2S
Molecular Weight
121.16
H.S. Code
2930.9040
Shelf Life
60 Months
MSDS
 

 

Physical Properties

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

Packings

  • 1GBA000015

    5 g (00005)

  • 1PW1200060

    25 g (00025)

  • 1PW1200500

    500 g (00500)

 

Specifications

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%

Safety Information and Hazard Symbols

Exclamation Mark
Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H302
Revision Date : 15-Jan-2015
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