Assay.............................................................................................................................................98% minimum
Solubility (0.1% dist. H2O).....................................................................................................Clear red solution
Absorption Max.(in water) at max.......................................................................................506 nm - 510 nm
Absorptivity (A1%,1cm, in water, At max.) on dried substance................................530 - 740
Loss On Drying(1100C) 1 hr.....................................................................................................15% Max
