Applications: Zinc oxide reacts with mineral acids to yield corresponding zinc salts when the solution is evaporated. Thus, with sulfuric acid it forms zinc sulfate (hydrated): ZnO + H2SO4 ? ZnSO4 + H2O Reactions with organic acids such as acetic or propionic acid yields zinc acetate, (CH3COO)2Zn, or zinc propionate, (CH3CH2COO)2Zn, upon concentration. Fusion of zinc oxide with fatty acids at elevated temperatures produces fatty salts. Thus, fusion with oleic or linoleic acid forms zinc oleate, Zn(C17H33COO)2, or zinc linoleate, Zn(C17H31COO)2. Reaction with tellurium powder in alkaline solution yields red crystalline zinc telluride, ZnTe. Zinc oxide reacts with potassium dichromate in solution in the presence of sulfuric acid to form a greenish-yellow pigment, zinc yellow or citron yellow [11103-86-9], 4ZnO•4CrO3•K2O•3H2O.

Crude zinc oxide is a yellow-gray granular solid with no odor. It is insoluble in water. The primary hazard is the threat posed to the environment. Immediate steps should be taken to limit its spread to the environment. Prolonged inhalation of the dust may result in metal fume fever with symptoms of chills, fever, muscular pain, nausea and vomiting.

Synonyms: Akro-zinc bar 85; Ozide; Zn 0701T; Blanc de Zinc; Zinc oxide, dispersion, nanoparticles, <110 nm particle size, 40 wt. % in butyl acetate; C-Weiss 8; Zinc oxide, Puratronic(R); Permanent White; Azo-55TT; Zinc oxide, p.a., 99.0%

Zinc oxide, as an amphoteric material, reacts with acids to form zinc salts and with strong alkalies to form zincates; zinc oxide reacts with carbon dioxide in moist air to form oxycarbonate; acidic gases (e.g., hydrogen sulfide, sulfur dioxide, and chlorine) react with zinc oxide, and carbon monoxide or hydrogen reduce it to the metal. When strongly heated it assumes a yellow color which disappears on cooling; Incompatibilities: reacts slowly with fatty acids in oils and fats to produce lumpy masses of zinc oleate, stearate, etc. Zinc oxide forms cement-like products when mixed with a strong soln of zinc chloride or with phosphoric acid, owing to the formation of oxy-salts; When ointments containing zinc oxide and water were melted and exposed to UV light, hydrogen peroxide was produced, in the case of fatty ointments containing cholesterol, amt of hydrogen peroxide was less and the cholesterol was partly oxidized. Has greatest UV absorption of all commercial pigments.

Smiles: O=[Zn];

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