Specification Sheet
Product Name DL-Cystine
Product Number C8630
Product Brand SIGMA
CAS Number 923-32-0
Molecular Weight 240.30
 
TEST SPECIFICATION
Appearance (Color) White to Off-White
Appearance (Form) Powder
Solubility (Color) Colorless to Light Yellow
Solubility (Turbidity) Clear to Slightly Hazy
  50 mg/mL, 1 M HCl
Infrared spectrum Conforms to Structure
Specific Rotation Conforms
  Conforms with enantiomeric mixture C=1, in 1M HCL
  25 degree C
Carbon 29.3 - 30.6 %
Nitrogen 11.3 - 11.9 %
Purity (TLC) ≥98 %