... Colorless crystal, easily soluble in water, insoluble in ethanol, relative density 1.63,melting point 34.6°C,when heated to 180 ... liner. Name of indexFCC-VE339(ii)pH of a 1 % solution--8.4—9.6Content(as dry base),≥%98 ... basis),≤%0.20.2Fluoride, ≤%0.0050.001Loss on drying,1,Anhydrous:≤5.0%;2,Dihydrate:18.0%-22.0%. ... (120°C,4h)1,Anhydrous ≤5.0%,2,Dihydrate ≤22.0%3,Heptahydrate ...