Certificate Of Analysis
Product Name Xylenol Orange tetrasodium salt,
Dye content 90 %
Product Number 227854
Product Brand ALDRICH
CAS Number 3618-43-7
Molecular Formula C31H28N2Na4O13S
Molecular Weight 760.58
 
TEST SPECIFICATION LOT 00808JD RESULTS
APPEARANCE RED-BROWN TO BLACK POWDER, CRYSTALS OR BROWN CRYSTALLINE POWDER
INFRARED SPECTRUM CONFORMS TO STRUCTURE. CONFORMS TO STRUCTURE.
UV-VISIBLE SPECTRUM C=0.01 G/L IN 0.1N NAOH 0.01 G/L, 0.1N NAOH
  E(580 +/- 3)NM = 47,000 (MINIMUM) E583= 49,900
  E(366 +/- 3)NM = 5,000 (MINIMUM) E369= 5,800
  E(299 +/- 3)NM = 11,000 (MINIMUM) E297= 11,500
ELEMENTAL ANALYSIS CARBON 42.8 - 52.4% CARBON 48.4%
  NITROGEN 3.0 - 4.0% NITROGEN 3.5%
QUALITY CONTROL JULY 2005