... 99.8%, , 98%, 95 Grade Standard: Electron, Rubber, Agriculture, Ceramics, painting, Nano Grade etc.Packing: ... , alkaki and amkonium solution.Application: Used in rubber, dope cable, porcelain enamel, oil, pottery ... ≤0.006--------Manganese (Mn) % ≤0.0002--------Metallic Zinc (in accordance with Zn) %NoneNone------Muriatic Acid Insoluble Substance ... 50.50.5contact person: Anne zinc oxide 99% for rubber