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Zinc oxide powder
Zinc oxide powder
The chemical formula for zinc oxide is ZnO. Water is not soluble, but it dissolves in acid and strong alkali. Zinc dioxide powder is an additive widely used by chemical manufacturers. It can be found in plastics as well as silicates products, rubber, lubricants and adhesives. The zinc oxide powder is transparent, has a high energy band gap, and an exciton-binding energy. It also emits light at room temperatures with excellent performance. It’s used in liquid-crystal displays, thin film transistors, light emitting diodes and other semiconductor products. As a nanomaterial, micro-particles of zinc oxide have also started to play a significant role in related fields.
Physical properties of Zinc Oxide Powder
White powder, hexagonal crystals or white powder. It is odorless, tastesless, and does not sand. It becomes yellow upon heating, turns white upon cooling and sublimates after being heated up to 1800degC. The hiding power of this product is about half that for zinc sulfide or titanium dioxide. The tinting strength of basic lead is two times that of titanium dioxide.
Solubility : soluble with acid, concentrated alkali, ammonium and ammonium sodium salt solutions, but insoluble with water and ethanol.
Chemical properties of Zinc Oxide Powder
Zinc oxide powder This white pigment is commonly called zinc white. Its main advantage is that ZnS, which is also white, does not turn black when exposed to H2S. ZnO changes gradually from white to light to lemon yellow when heated. As it cools down, the yellow disappears. It can be added to a paint to produce a paint that changes color or to a thermometer for a thermometer that changes color. ZnO, which has an astringent quality and a certain bactericidal property, is commonly used as ointment. ZnO may also be used to create catalysts.
Preparation of Zinc Oxide Powder
1. Direct method
1. You can get it by calcining Zinc Carbonate. ZnCO3=ZnO+CO2|
2. The zinc hydroxide is calcinated and decomposed to obtain the metal.
3. Zinc is made by melting zinc oxide at high temperatures and then oxidizing it.
4. This is obtained by oxidizing molten zinc.
5. Methods include indirect (also called French method) utilizing zinc ingots, direct (also known American method) utilizing zinc ore and wet (also known as American method).
2. The indirect method.
Reaction equation: 2Zn+O2=2ZnO
Operation: The zinc ingot produced by electrolysis is heated to 600700°C to melt. It is then placed in a high-temperature resistant pot, melted and vaporized at a temperature of 13001400°C, introduced hot air for oxidation, and finally the zinc dioxide is cooled.
Direct method Reaction equation:
C+O2=CO2
CO2+C=2CO
ZnO+CO=Zn (steam)+CO2
Zn (steam)+CO+O2=ZnO+CO2
Operation Method: In a proportion of 1:0.5 to 0.05, the roasted zinc powder (or zinc containing material) is combined with anthracite and limestone. After reduction at 1300degC and smelting, the zinc ore powder in the ore is reduced into zinc vapor. This zinc vapor is then oxidized and the resultant zinc oxide is captured.
3. Wet method
Zinc ash reacts with sulfuric to form zinc sulfate. This is then combined with ammonia and sodium carbonate to create zinc oxide. The reaction is described by the following equation:
Zn+H2SO4=ZnSO4+H2|
ZnSO4+Na2CO3=ZnCO3|+Na2SO4
ZnSO4+2NH3*H2O=Zn(OH)2|+(NH4)2SO4
The product is made from zinc carbonate. zinc oxide is obtained by washing and drying. ZnCO3-ZnO+CO2|
The zinc oxide product is made by washing, calcination and cooling. Zn(OH)2-ZnO+H2O
(aka. Technology Co. Ltd., a global chemical material manufacturer and supplier with over 12 year’s experience in supplying super-high-quality chemicals. The Zinc oxide powder Please note that the products produced by our company are of high purity and have low impurity. Please. Contact us if necessary.
Physical properties of Zinc Oxide Powder
White powder, hexagonal crystals or white powder. It is odorless, tastesless, and does not sand. It becomes yellow upon heating, turns white upon cooling and sublimates after being heated up to 1800degC. The hiding power of this product is about half that for zinc sulfide or titanium dioxide. The tinting strength of basic lead is two times that of titanium dioxide.
Solubility : soluble with acid, concentrated alkali, ammonium and ammonium sodium salt solutions, but insoluble with water and ethanol.
Chemical properties of Zinc Oxide Powder
Zinc oxide powder This white pigment is commonly called zinc white. Its main advantage is that ZnS, which is also white, does not turn black when exposed to H2S. ZnO changes gradually from white to light to lemon yellow when heated. As it cools down, the yellow disappears. It can be added to a paint to produce a paint that changes color or to a thermometer for a thermometer that changes color. ZnO, which has an astringent quality and a certain bactericidal property, is commonly used as ointment. ZnO may also be used to create catalysts.
Preparation of Zinc Oxide Powder
1. Direct method
1. You can get it by calcining Zinc Carbonate. ZnCO3=ZnO+CO2|
2. The zinc hydroxide is calcinated and decomposed to obtain the metal.
3. Zinc is made by melting zinc oxide at high temperatures and then oxidizing it.
4. This is obtained by oxidizing molten zinc.
5. Methods include indirect (also called French method) utilizing zinc ingots, direct (also known American method) utilizing zinc ore and wet (also known as American method).
2. The indirect method.
Reaction equation: 2Zn+O2=2ZnO
Operation: The zinc ingot produced by electrolysis is heated to 600700°C to melt. It is then placed in a high-temperature resistant pot, melted and vaporized at a temperature of 13001400°C, introduced hot air for oxidation, and finally the zinc dioxide is cooled.
Direct method Reaction equation:
C+O2=CO2
CO2+C=2CO
ZnO+CO=Zn (steam)+CO2
Zn (steam)+CO+O2=ZnO+CO2
Operation Method: In a proportion of 1:0.5 to 0.05, the roasted zinc powder (or zinc containing material) is combined with anthracite and limestone. After reduction at 1300degC and smelting, the zinc ore powder in the ore is reduced into zinc vapor. This zinc vapor is then oxidized and the resultant zinc oxide is captured.
3. Wet method
Zinc ash reacts with sulfuric to form zinc sulfate. This is then combined with ammonia and sodium carbonate to create zinc oxide. The reaction is described by the following equation:
Zn+H2SO4=ZnSO4+H2|
ZnSO4+Na2CO3=ZnCO3|+Na2SO4
ZnSO4+2NH3*H2O=Zn(OH)2|+(NH4)2SO4
The product is made from zinc carbonate. zinc oxide is obtained by washing and drying. ZnCO3-ZnO+CO2|
The zinc oxide product is made by washing, calcination and cooling. Zn(OH)2-ZnO+H2O
(aka. Technology Co. Ltd., a global chemical material manufacturer and supplier with over 12 year’s experience in supplying super-high-quality chemicals. The Zinc oxide powder Please note that the products produced by our company are of high purity and have low impurity. Please. Contact us if necessary.