Product : Aurin C.A.S No. : 603-45-2 C.I.No. : 43800 M.F : C19H14O3 M.W. : 290.32gm/mole Specifications: Dye Content (by Spectrophotometry): >85% Solubility 0.1% (EtOH): Clear solution Absorption maximum (Ethanol +5ml 1N HCl)? max: 482-487nm Absorptivity (A1%/1cm, in Ethanol + 5ml 1N HCl at max): >2000 Loss On Drying (110C):
