Specification Sheet
Product Name Acid Green 25,
analytical standard
Product Number 88996
Product Brand SIAL
CAS Number 4403-90-1
Molecular Weight 622.58
 
TEST SPECIFICATION
APPEARANCE (COLOR) Dark Green to Very Dark Green and Black and Green-Black
APPEARANCE (FORM) Powder or Crystals
PURITY (HPLC AREA %) ≥ 90 %
WATER ≤ 10.0 %
CARBON CONTENT 54.02% (Theory)
HYDROGEN CONTENT 3.24% (Theory)
NITROGEN CONTENT 4.50% (Theory)
PROTON NMR SPECTRUM CONFORMS TO STRUCTURE
ASSAY (ICP) 7.39% (Theory)
REMARKS ON ICP Na positive
EXPIRY PERIOD 36 MONTHS