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Gerhold chemetals
Submitted 2018-12-21 08:19:38 Calcium oxide is an inorganic compound whose chemical formula is CaO Jack Mewhort Color Rush Jersey , commonly known as quicklime. The physical property is a white powder on the surface, which is grayish white when it is impure, pale yellow or gray when it contains impurities, and is hygroscopic.

Physical properties
White or with gray blocks or granules. Soluble in acid T.Y. Hilton Color Rush Jersey , glycerin and sucrose solutions, almost insoluble in ethanol. The relative density is 3.32 to 3.35. The temperature of 2572 掳 C. The boiling point is 2850 掳C. The refractive index is 1.838.

Chemical properties
Calcium oxide is an alkaline oxide and is sensitive to moisture. Easy to absorb carbon dioxide and water from the air. Reacts with water to form calcium hydroxide (Ca(OH)2) and produces a large amount of heat, which is corrosive.
CaO+H2O=Ca(OH)2
stability
stable
Danger mark
20 (alkaline corrosion products)

Use
1, can be used as a filler Andrew Luck Color Rush Jersey , for example: as a filler for epoxy adhesive;
2. Used as an analytical reagent, used as a carbon dioxide absorber in gas analysis, a spectral analysis reagent, a high-purity reagent for epitaxy and diffusion in semiconductor production Khari Willis Color Rush Jersey , drying of laboratory ammonia gas, and alcohol dehydration.
3, used as raw materials, can make calcium carbide Bobby Okereke Color Rush Jersey , soda ash, bleaching powder, etc., also used in tanning Parris Campbell Color Rush Jersey , wastewater purification, calcium hydroxide and various calcium compounds;
4, can be used as building materials, metallurgical flux Ben Banogu Color Rush Jersey , cement accelerator, phosphor flux;
5. Used as a vegetable oil bleaching agent, a drug carrier, a soil conditioner and a calcium fertilizer;
6 Rock Ya-Sin Color Rush Jersey , can also be used for refractory materials, desiccant
7. It can be used to prepare agricultural machine No. 1, No. 2 glue and underwater epoxy adhesive, and also used as a reagent for pre-reaction with 2402 resin;
8. Used for acid wastewater treatment and sludge quenching and tempering;
9 Black Henry Anderson Jersey , can also be used as a boiler deactivation protection agent, using the moisture absorption capacity of lime to keep the metal surface of the boiler water vapor system dry and prevent corrosion, suitable for long-term deactivation protection of low-pressure, medium-pressure and small-capacity steam drum boilers;
10. It can react with water to prepare calcium hydroxide. The reaction equation: CaO+H2O=Ca(OH)2 belongs to the compounding reaction.June Bruno
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