Skip to content
Amino Acids & Derivatives

L-Cysteine

RA001190 CAS 52-90-4 Biochemistry

Identity

Product code
RA001190
CAS number
52-90-4
Grade
Biochemistry
Purity
99%
Molecular formula
C3H7NO2S
Molecular weight
121.16

Classification

Applications
Biochemistry

Technical Data

Properties

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

These are recorded catalogue property values. Product specification limits, where available, are listed under Specifications.

Specifications

ParameterSpecificationUnit
Appearance Colorless crystalline powder —
Foreign amino acids Max 0.5 % %
Other ninhydrin positive substances Max 0.1 % %
Assay Min 99 % %
UV absorbance Max 0.5 —
Loss on drying (at 105°C; 4 hrs) (105 °C) Max 0.3 % %
Chloride (Cl) Max 0.002 % %
Sulphate (SO4) Max 0.01 % %
Heavy metal Max 0.001 % %
Ammonium (NH4) Max 0.01 % %

Packaging

Pack size SKU
5 g RA001190-PK-5G
25 g RA001190-PK-25G
500 g RA001190-PK-500G