Product : Brilliant Cresyl Blue 65% C.A.S. No. : 81029-05-2 M.F. : C17H20CIN3O.1/2.ZnCl2 M.W. : 385.96gm/mole Specifications: Dye Content (by Spectrophotometry) >65% Solubility 0.1% (50% EtOH) Clear blue solution Absorption Maximum (in 50% EtOH) ?max 625-630nm Absorptivity (A1%/1cm,in 50% EtOH at max) >1600 Loss On Drying (110C)