L-CYSTINE
L-CYSTINE For Biochemistry
Short Name: L-CYSTINE
Synonym: (R,R)-3,3'-Dithiobis(2-aminopropionicacid)
Basic Details
Article No.
LG1616
Grade
For Biochemistry
Purity
98.5%
CAS No.
56-89-3
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]
> 240 °C
Solubility in water [% weight]
Soluble in water
Chemical Specifications
Appearance
White to off white powder
Assay
98.5 - 101%
Specific optical rotation ([α]20/D; 20 g/L in 1 mol/L HCl; on dried substance)
-218 to -224°
Chloride (Cl)
Max 0.05%
Sulphate (SO4)
Max 0.03%
Ammonium (NH4)
Max 0.02%
Ninhydrin positive substance
Max 0.2%
Loss on drying (at 110°C)
Max 0.5%
Sulphated ash
Max 0.1%
Iron (Fe)
Max 0.002%
Lead (Pb)
Max 0.001%
Safety Information & Hazard Symbols