Antimony Trioxide

PHYSICAL & CHEMICAL PROPERTIES：

CAS Number：1309-64-4

Appearance：White powder

Chemical formula：Sb₂O₃

Molecular weight：291.50

Melting point：656℃

Boiling point：1425℃

Specific gravity：5.2

Solubility：soluble in HCL and tartaric acid; insoluble in water and acetic acid.

Application：

Used as flame retardant additives for materials such as Polyethylene, Polypropylene, Polystyrene, PVC(Polyvinyl Chloride),Nylon, Engineering plastics(ABS),Rubber, Paint, Coating, Synthetic Resins and Paper,etc.;as antifoaming agent for glass fusion and bubble removing; as Catalyst for Polyester Fibers as well as the Covering agent and the Brightener for enamel and Ceramic products. It may be also applied to the petroleum heavy oil, residual oil, catalytic cracking and catalytic reforming process as the passivating agent.

Properties

It is an excellent inorganic white pigment, which is mainly used for paint coloring, flame retardants for various resins, synthetic rubber, canvas, paper, coatings, catalysts for petrochemical industry and synthetic fibers, as well as mordants and opalescent agents. It is a raw material for the synthesis of antimony salts. It is used in enamel industry to increase the opacity and surface gloss of enamel. It is used as decolorizing agent instead of arsenite in glass industry.

CAS No.

1309-64-4

Formula

O3Sb2

Molecular Mass

291.51800

Exact Mass

289.79200

PSA

43.37000

Logp

-0.30600