Certificate Of Analysis
Product Name 3,4-Dihydroxybenzaldehyde,
≥97%
Product Number W510300
Product Brand ALDRICH
CAS Number 139-85-5
Molecular Formula (HO)2C6H3CHO
Molecular Weight 138.12
 
TEST SPECIFICATION LOT 01729LG RESULTS
APPEARANCE OFF-WHITE TO GOLD-BROWN POWDER GOLD-BROWN POWDER
MELTING POINT 150 - 157 DEGREES CELSIUS 152-155 DEGREES CELSIUS
INFRARED SPECTRUM CONFORMS TO STRUCTURE. CONFORMS TO STRUCTURE.
TITRATION 97.0% - 103.0% (WITH NAOH) 98.3 % (WITH NAOH)
GAS LIQUID 99.5 %
SOLUBILITY 2.5% IN ETHANOL; CLEAR SOLUTION 25MG/ML, ETOH; CLEAR, VERY DARK YELLOW
  SOLUTION