Specification Sheet
Product Name Xylenol Orange tetrasodium salt,
Dye content 90 %
Product Number 227854
Product Brand ALDRICH
CAS Number 3618-43-7
Molecular Weight 760.58
 
TEST SPECIFICATION
APPEARANCE RED-BROWN TO BLACK POWDER, CRYSTALS OR
  CRYSTALLINE POWDER
INFRARED SPECTRUM CONFORMS TO STRUCTURE.
UV-VISIBLE SPECTRUM C=0.01 G/L IN 0.1N NAOH
  E(580 +/- 3)NM = 47,000 (MINIMUM)
  E(366 +/- 3)NM = 5,000 (MINIMUM)
  E(299 +/- 3)NM = 11,000 (MINIMUM)
ELEMENTAL ANALYSIS CARBON 42.8 - 52.4%
  NITROGEN 3.0 - 4.0%
  REVISED FEBRUARY 11, 2005 RJM