... Molecular Formula: ZnO EINECS NO: 215-222-5 Purity: 99.5%, 99.7%, 99.8%, , 98%, 95 Grade Standard: Electron, Rubber, Agriculture, ... odourless, relative density 5.606, stable under normal temperature.Insoluble in water and alcohol, soluble in acid, alkaki and ... 0002--------Metallic Zinc (in accordance with Zn) %NoneNone------Muriatic Acid Insoluble Substance % ≤0.030.040.50.72.0Loss On Ignition % ...