Certificate Of Analysis
Product Name Uniblue A sodium salt
Product Number U5753
Product Brand SIGMA
CAS Number 14541-90-3
Molecular Formula C22H15N2O7S2Na
Molecular Weight 506.48
 
TEST SPECIFICATION LOT 085H0872 RESULTS
APPEARANCE DARK BLUE POWDER
SOLUBILITY DARK BLUE SOLUTION AT 40 MG PLUS 4 ML OF WATER
ELEMENTAL ANALYSIS 45.9% CARBON 4.7% NITROGEN
ICP-ATOMIC EMISSION 1.0% SODIUM 5.0% POTASSIUM
ULTRAVIOLET/VISIBLE SPECTRUM E1% = 194 AT LAMBDA MAX 594 NM IN WATER
DYE CONTENT APPROX. 85%