L-CYSTEINE
L-CYSTEINE For Biochemistry
Short Name: L-CYSTEINE
Synonym: (R)-2-Amino-3-mercaptopropionic acid
Basic Details
Article No.
LG1613
Grade
For Biochemistry
Purity
99%
CAS No.
52-90-4
HS Code
2930.9040
Shelf Life
60 Months
Packings Avialable
Physical Properties
Physical state at 20 °C
Solid
Colour
Colorless crystalline
Melting point/ Freezing point [°C]
220 °C
Solubility in water [% weight]
Appreciable (> 10%)
Chemical 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 & Hazard Symbols
Symbol
GHS07
Signal Word
Warning
Hazardous Statement
H302