Specification Product Name CRESYL VIOLET ACETATE CAS NO. 10510-54-0 Molecular Weight 321.34 Molecular Formula C18H15N3O3 Appearance Grayish Black Powder Structure     Tests    Limits 1% Soln. in Solvent Clear Dye Content - 80% Spectrophotometric Assay - Conc. 5.0mgs/Ltr in 50% aqueous alcohol at 596.5nm = 0.425         REVISED: 1-1-2012