We are offering zinc oxide. Purity : ranging from 40 to 99.9 % according to different grades. Mf : zno mol wt : 81.41 cas no. : 1314-13-2 other names : zinc white, calamine, philosopher's wool, chinese white, flowers of zinc. grades : for rubber, paint, ceramic, sanitary ware, cosmetic, pharma, feed, active, ra