Certificate Of Analysis
Product Name Poly-L-aspartic acid sodium salt,
average Mv 15,000-50,000
Product Number 386790
Product Brand ALDRICH
CAS Number 31871-95-1
 
TEST SPECIFICATION LOT 08427TG RESULTS
APPEARANCE WHITE POWDER
MOLECULAR WEIGHT MV= 36,300
DETERMINATION LALLS: MW= 37,600
  DP= 274
ELEMENTAL ANALYSIS CARBON 31.38%
  HYDROGEN 3.63%
  NITROGEN 9.24%
OPTICAL ROTATION -30.2 (C=1%, H2O @ 25 C)
TITRATION 9.1% H2O
ICP ASSAY NA 14.8%
SOLUBILITY CLEAR VERY FAINT YELLOW SOLUTION (C=5%, H2O
  SONICATION)