Name: Calcium Oxide

Other names: quicklime; calcined lime, calcined lime

Chemical formula: CaO

Molecular weight: 56.077

CAS Registry Number: 1305-78-8

EINECS accession number: 215-138-9

Melting point: 2572°C (2845K)

Boiling point: 2850°C (3123K)

Water solubility: react with water to produce slightly soluble calcium hydroxide

Closeness: 3.350g/cm^3

External view: white solid

Flash point: non-flammable

Application: desiccant, etc.

use

1. It can be used as a filler, for example: used as a filler for epoxy adhesives;

2. Used as an analytical reagent, as a carbon dioxide absorbent during gas analysis, as a spectrum analysis reagent, high-purity reagents are used in the epitaxial and diffusion processes in semiconductor production, the drying of laboratory ammonia and alcohol dehydration, etc.

3. Used as a raw material, it can be used to make calcium carbide, soda ash, bleaching powder, etc., and also used in leather making, wastewater purification, calcium hydroxide and various calcium compounds;

4. It can be used as building materials, metallurgical fluxes, cement accelerators, and fluxes for phosphors;

5. Used as vegetable oil decolorizer, drug carrier, soil conditioner and calcium fertilizer;

6. It can also be used for refractory materials and desiccants;

7. It can be used to prepare agricultural machinery No. 1 and No. 2 glues and underwater epoxy adhesives, and also used as a reactant for pre-reaction with 2402 resin;

8. Used for acid wastewater treatment and sludge conditioning;

9. It can also be used as a boiler shutdown protective agent, using the moisture absorption capacity of lime to keep the metal surface of the boiler water vapor system dry to prevent corrosion. It is suitable for long-term shutdown protection of low-pressure, medium-pressure, and small-capacity drum boilers;

10. It can react with water to prepare calcium hydroxide. The reaction equation is: CaO+H₂O=Ca(OH)₂, which is a compound reaction.