Certificate Of Analysis
Product Name Poly-L-aspartic acid sodium salt,
mol wt 15,000-50,000
Product Number P6762
Product Brand SIGMA
CAS Number 31871-95-1
 
TEST SPECIFICATION LOT 010K5907 RESULTS
APPEARANCE WHITE TO OFF-WHITE POWDER CONFORMS
SOLUBILITY CLEAR COLORLESS TO FAINT YELLOW SOLUTION AT 50MG/ML OF WATER CLEAR COLORLESS
DEGREE OF POLYMERIZATION BY VISCOSITY 200 TO 298 244
MOLECULAR WEIGHT BY VISCOSITY 15,000 TO 50,000 33,400
DEGREE OF POLYMERIZATION BY LALLS 299
MW BY LOW ANGLE LASER LIGHT SCATTERING 41,000
RECOMMENDED RETEST SOP QC-12-006 3 YEARS JULY 2005
QC RELEASE DATE JULY 2003