Product Name：Antimony trioxide

Product Description：Antimony-based flame retardant is one of the most important inorganic flame retardants, can greatly improve the performance of halogen flame retardants. Antimony-based ...

Product Details:

Antimony-based flame retardant is one of the most important inorganic flame retardants, can greatly improve the performance of halogen flame retardants. Antimony-based flame retardant is the main varieties of antimony trioxide (ATO), colloidal antimony pentoxide and sodium antimonate. One of the most important is the ATO, which is almost all halogen flame retardant synergist indispensable.

1, performance

The molecular formula of antimony trioxide is Sb2O3, the relative molecular mass is 91.60, the theoretical antimony content is 83.54%. Sb2O3 is a white cubic crystal with a density of 5.2 g / cm3 and a refractive index of 2.087. The melting point of Sb2O3 is 6560C, the heat of fusion is 54.4-55.3kj / mol, the heat of evaporation is 36.3-37.2kj / mol, and the standard formation enthalpy is -692.5kj / mol. Do not dissolve in water and ethanol, soluble hydrochloric acid hot and sour, concentrated sulfuric acid, concentrated alkali, oxalic acid, tartaric acid and fuming nitric acid.

2, the quality indicators

Antimony trioxide: Sb2O3 ≥ 99.8%

PbO: ≤0.05%

Copper oxide CuO: 0.0004

Iron oxide Fe2O3: 0.0025

Tartaric acid insoluble matter TAL: 0.025

Whiteness: 95

Particle size: 0.5 μm to 1 μm

3, traits

Antimony trioxide is a white odorless crystalline powder, is an amphoteric oxide, weatherability than lithopone good, small powder, heat, heat change yellow, cooling back to white.

4, dissolved

Antimony trioxide insoluble in water, ethanol, soluble in concentrated hydrochloric acid, concentrated sulfuric acid, concentrated alkali, oxalic acid, tartaric acid and fuming nitric acid.

5, use

Antimony trioxide used in making enamel, paint, tartar, drugs, and used as fillers, mordant and so on. Mainly used in the manufacture of fire paint, antimony white at high temperatures and chlorine-containing resin reaction can generate antimony chloride, can prevent the spread of fire to achieve the role of fire. Often and zinc oxide, sodium hydroxide and other brominated flame retardants as a synergist in the plastic fire protection system applications