Certificate Of Analysis
Product Name Hydroquinone,
≥99%
Product Number 240125
Product Brand ALDRICH
CAS Number 123-31-9
Molecular Formula C6H4-1,4-(OH)2
Molecular Weight 110.11
 
TEST SPECIFICATION LOT 02029TT RESULTS
APPEARANCE WHITE TO OFF-WHITE POWDER, CRYSTALS, WHITE CRYSTALLINE POWDER
MELTING POINT 173-176 DEGREES CELSIUS
INFRARED SPECTRUM CONFORMS TO STRUCTURE. CONFORMS TO STRUCTURE AND STANDARD AS ILLUS-
  TRATED ON PAGE 1107D OF EDITION 1, VOLUME 1
  OF "THE ALDRICH LIBRARY OF FT-IR SPECTRA".
GAS LIQUID 99.0% (MINIMUM) 99.7%
LOSS ON DRYING 0.20%
RESIDUE ON IGNITION 0.17%
SOLUBILITY 5%, H2O, CLEAR LIGHT ORANGE SOLUTION
  150<<200