Product : Bromocresol Purple C.A.S. No. : 115-40-2 M.F. : C21H16Br2O5S M.W. : 540.24gm/mole Specifications: Dye Content (by Spectrophotometry) >95% Transition Range pH 5.2-6.8 Yellow-Purple Solubility 0.1% (95% EtOH) Clear solution Absorption maximum (pH 5.2) ?1max 427-431nm Absorption maximum (pH 6.8) ?2max 588-590nm Absorptivity (A1%/1cm at pH 5.2 at ?1max) 400-500 Absorptivity (A1%/1cm at pH 6.8 at ?2max) 1000-1100 Loss On Drying (110�°C)
