Zinc oxide CAS 1314-13-2, zinc oxide

zinc oxide

Chinese name	zinc oxide
English name	Zinc oxide
Chinese alias	C.I. Pigment White 4; Zinc Oxide Powder; Zinc White; Zinc White Powder; Zinc Hua; Sub-lead Hua; Masterbatch ZNO-80; Glue ZNO-80; Active Agent ZNO; China White; Zinc Silver; Active Zinc Oxide; Zinc Monoxide; Nano-Zinc Oxide; Zinc Mineral; Zinc Oxide Desulfurizer T304; Zinc Oxide Desulfurizer T303; Zinc Oxide (ZnO)
RN CASE	1314-13-2
EINECS number	215-222-5
molecular formula	ZnO
molecular weight	81.4084
Dangerous goods sign	N:Dangerous for the environment
Risk Terminology	R50/53;
security terms	S60;        S61;
physicochemical properties	Properties White hexagonal crystal or powder, odorless and delicate. Melting point 1975 ℃ Relative density 5.606 Refractive Index 2.008~ 2.029 Solubility, soluble in acid, sodium hydroxide, ammonium chloride, insoluble in water, ethanol and ammonia. The production method is obtained by calcining zinc carbonate. It is obtained by calcining zinc hydroxide. It is smelted from crude zinc oxide to zinc, and then oxidized by high-temperature air. It is obtained by oxidation of molten zinc. Production methods currently used include the indirect method (also known as the French method) using zinc ingots as raw materials, the direct method (also known as the American method) using zinc ore as raw materials, and the wet method. Indirect method. Reaction equation: 2ZnO+O2→2ZnO Operation method: The zinc ingot obtained by electrolysis is heated to 600~ 700 ° C for melting, placed in a high-temperature crucible, melted and gasified at a high temperature of 1250~ 1300 ° C, introduced into hot air for oxidation, and the generated zinc oxide is cooled and separated by cyclone. The fine particles are captured with a cloth bag to obtain the finished zinc oxide. Direct method. Reaction equation: C+O2→CO2 CO2+C→CO ZnO + CO → Zn (） + CO2 Zn (） + CO + O2 → ZnO + CO2 Operation method: Roasted zinc ore powder (or zinc-containing material), anthracite (or coke) and limestone are prepared into balls in a ratio of 1:0.5:0.05. After reduction smelting at 1300 ° C, zinc oxide in the ore powder is reduced to zinc vapor, and then passed into air for oxidation. The generated zinc oxide is captured to obtain finished zinc oxide. Wet process. Zinc sulfate is formed by reacting zinc ash with sulfuric acid, and then it is reacted with sodium carbonate and ammonia water respectively. The obtained zinc carbonate and zinc hydroxide are used as raw materials to produce zinc oxide. The reaction equation is as follows: Zn+H2SO4→ZnSO4+H2↑ ZnSO4+Na2CO3→ZnCO3+Na2SO4 ZnSO4+2NH3·H2O→Zn(OH)2+(NH4)2SO4 Using zinc carbonate as raw material, the product zinc oxide is obtained by washing, drying, calcining and crushing. ZnCO2 → ZnO + CO2 ↑ Using zinc hydroxide as raw material, the product zinc oxide is prepared by washing, precipitation, drying, calcination, cooling and crushing. Zn (OH) 2 → ZnO + H2O Production methods currently used include the indirect method (also known as the French method) using zinc ingots as raw materials, the direct method (also known as the American method) using zinc ore as raw materials, and the wet method. The zinc ingot is heated to 1000 ° C by indirect method, melted and vaporized, and hot air is introduced for oxidation. The generated zinc oxide is cooled and separated by cyclone, and the fine particles are captured with a cloth bag. that is, the finished zinc oxide. its 2Zn + O2 → 2ZnO The zinc ore powder is directly roasted with anthracite and lime in proportion to prepare into balls. After reduction smelting, the zinc oxide in the ore powder is reduced to zinc vapor, and then passed into the air for oxidation. The generated zinc oxide is captured to obtain finished zinc oxide. its 2ZnO+C→2Zn+CO2↑ 2Zn + O2 → 2ZnO Zinc sulfate was formed by wet reaction of zinc ash with sulfuric acid, then reacted with sodium carbonate and ammonia water respectively. Zinc oxide was obtained by calcination and pulverization of zinc carbonate and zinc hydroxide. Zn+H2SO4→ZnSO4+H2↑ ZnSO4+Na2CO3→ZnCO3+Na2SO4 Using zinc carbonate as raw material, the product zinc oxide is prepared by washing, drying, calcining and crushing. ZnCO3[△]→ZnO+CO2↑ Using zinc hydroxide as raw material, zinc oxide is prepared by washing, precipitation, drying, calcination, cooling and crushing. Its Zn(OH)2[△]→ZnO+H2O White crystals or powder, belonging to the hexagonal crystal system. Odorless, non-toxic, non-sandy, and fine in quality. Density 5.606g/cm3, refractive index 2.0041, sublimation at 1800 ° C. The coloring power is twice that of basic lead carbonate, and the hiding power is half that of Tai oxide and zinc sulfide. Insoluble in water and ethanol, soluble in acid, sodium hydroxide, ammonium chloride, belonging to amphoteric oxides. Yellow when heated at high temperature, returns to white after cooling. Can absorb carbon dioxide and moisture in humid air and gradually become basic zinc carbonate. Can also be reduced to metal zinc by carbon or carbon monoxide. There is excess zinc in the zinc oxide lattice. The first ionization energy of zinc is relatively low, and it is easy to lose electrons. The electron mobility of zinc oxide is much greater than that of hole mobility, which can be regarded as n-type semiconductor.
purpose	Used as a paint pigment and a filler for rubber, medicinally used to make ointments, zinc pastes, plasters, etc. Suitable for zinc supplements in feed processing Uses, mainly used as a reinforcing agent and active agent in the rubber or cable industry, as a colorant and filler for white rubber, and as a vulcanizing agent in neoprene rubber Uses for fine desulfurization of raw material gas in the fertilizer industry Uses, mainly used as white pigments, rubber vulcanization active agents, reinforcing agents, organic synthesis catalysts, desulfurization agents, for electrostatic copying, pharmaceuticals, etc Uses for desulfurization of synthetic ammonia, petroleum, natural gas and chemical raw material gas Uses as a substrate for analytical reagents, reference reagents, fluorescent agents, and photosensitive materials Uses for electrostatic wet copying, dry transfer, laser fax communication, electronics
upstream raw material	Basic zinc carbonate, zinc hydroxide, zinc, zinc calcine, zinc ingot
downstream products	Zinc sulfate, zinc nitrate, zinc chloride, zinc dihydrogen phosphate, zinc phosphate, zinc borate, basic zinc carbonate, zinc carbonate, zinc fluorosilicate, zinc bromide, zinc fluoroborate, zinc acetate, zinc citrate