Name:calcium
oxide;
Chemical
formula:CaO;
Molecular
weight:56.077;
CAS:1305-78-8;
EINECS:215-138-9;
Melting
point:2572℃(2845K);
Boiling
point:2850℃(3123K);
Density:3.350g/cm^3;
Appearance: white or gray lumps or
particles;
Features: strong alkaline, corrosive
to skin and fabric, reacting with water, forming slightly soluble
calcium hydroxide, soluble in acids, glycerin and sucrose solution,
almost insoluble in ethanol;
Application:
1. Chemical
industry: calcium carbide, soda ash, bleaching powder, etc., are
also used for tannery, wastewater purification, calcium hydroxide
and various calcium compounds (raw materials, analytical reagent,
carbon dioxide absorbent, spectral analysis reagent, ammonia drying
and alcohol dehydration, making calcium
hydroxide);
2. Semiconductor
(epitaxy, diffusion);
3. Building
materials (Metallurgical Flux, cement accelerator, fluxes for
phosphor);
4. Environmental
protection (acid wastewater treatment, sludge
conditioning)
5. Other
areas: vegetable oil decoloring agent, drug carrier, soil
improvement agent and calcium fertilizer, refractory material,
desiccant, preparation of agricultural machinery 1, No. 2 glue,
epoxy adhesive prepared under water, used as reactants with 2402
resin; boiler shutdown protection agent.