... as per required Basic Green MW:364.9 Performance:green flashing crystal. Dissolve in cold water and hot water, ... yellow to meet the concentrated sulphuric acid; it is light green when add the NaOH into the aqueous solution, ... Standard:Voluntary Standard:HT/T2893-1997Index NameIndex ValueAppearance:green flashing crystalColor Light,(compared with the standard)similarIntensity,(as standard )100Impurity ...