Description

Formula ZnO CAS No. ********2 EINECS NO. ********5 MOL WT. *1.*7 H. S. CODE ***7.***0 Synonyms: Zinc white; Zinc flowers; C. I. Pigment white 4; ZnO; White or slight yellow fine powder and proportion 5.**6, specific gravity 5.**6.5, granularity 0.***0.7um, refractive index is 1.***2.*5, specific heat in *0° C 0.***5 ka. /g. ° C, melting point ***3° C, Zinc oxide evaporates in ***0° C. It is a kind of amphoteric oxide, dissolving in acid, alkali, ammonium chloride and ammonia water, not dissolving in water and ethyl alcohol, sublimating when heating to ***0° C. Used: Rubber, ceramics, medicine, paint, printing & dyeing, magnetic, electronics, fodder, picture tube, etc. Packing: In *5Kg P. P. Woven bag. Item Index Super grade Top-grade First grade Zinc oxide(Zn0 calculating as dry material)%≥ *9.9 *9.7 *9.5 Lead oxide(as Pb)≤% ≤ 0.**5 0.**7 0.*5 Manganese&#**9;s oxide(as Mn )≤ 0.***1 0.***1 0.***1 Cupric oxide(as Cu )% ≤ 0.***2 0.***2 0.***2 Insoluble matter in Hydrochloric acid % ≤ 0.**4 0.**6 0.**8 Loss on ignition% ≤ 0.*5 0.2 0.2 Residue on *5um sieve% 0.*5 0.1 0.*5 Water-soluble matter% ≤ 0.*5 0.1 0.1 Volatile matter in **5°C% ≤ 0.3 0.3 0.4 Oil absorption g/**0g *4 *4 *4