Zinc Oxide Power

CAS NO. : 1314-13-2 EINECS: 215-222-5 Molecular Formula : ZnO Molecular Weight : 81.38 Properties : White powder,stable under normal temperature, good hiding power and colouring power.Insoluble in water and alcohol ,soluble in acid ,alkali and amkonium solution. Use : Zinc Oxide Pharmaceutical Grade USP34 is mainly used for bandage,medicine,cosmetic,plaster,adhesive plaster,dental impression pastezinc ointment and etc Storage : Store at a cool and dry place. Packing : 25Kg woven bags lined with plastic bag(special packing can be made according to clients' requirement). Specification: Zinc Oxide Pharmaceutical Grade USP34( % Idex item Standard Assay(ZnO) 99.0%-100.5% identification A:When stongly heated,it assumes a yellow color that disappears on cooling B:Asolution of it in a slight excess of 3N hydrochloric acid responds to the tests for Zinc<191> Alkalinity Mix 1.0g with 10ml of hot water,add 2 drops of phenolphthalein TS,and filter;if a red color is produced.not more than 0.30ml of 0.10 N hydrochloric acid is required to discharge it Loss on ignition not more than 1.0% As not more than 6ppm Carbonate and color of solution Mix 2.0g with 10ml of water,add 30ml of 2N sulfuric acid,and heat on a steam bath,with contant stirring;no effervescence occours and the resulting solution is clear and colorless Lead(Pb) Add 2g to 20ml of water,stir well,add 5ml of

1314-13-2