NILE CHEMICALS

YELLOW PHENOLPHTHALEIN  
 
CERTIFICATE  OF ANALYSIS
YELLOW PHENOLPHTHALEIN  
 
TEST   RESULTS LIMIT
Formula : C20H14O4  
CAS Number : 77-09-8  
Mol. Wt. : 318.33  
Description : Yellowish Powder PASSES
Indetification   Complies Should Comply
Solubility : Complies Should Comply
Colour of Solution : 1.473 Absorbance of 3%soln at 405 nm 
  :   is not less than 0.150
Melting Temperature : 256 .8C ( LT. NLT 255o C )
Chromatographic Purity  : 1.99% NMT 6.0%
Assay  : 97.26% (LT. 93.0%-100.0%)
Loss on Drying : 0.33% ( LT.NMT 1.0 %)
Residue on ignition : 0.039% ( LT.NMT 0.1 % )
Heavy Metals : Compplies (LT.NMT 0.0015 %)
Arsenic : Complies (LT. NMT 8 PPM)
       
 
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