Process for producing antimony trioxide

Details Process for producing antimony trioxide Process for producing antimony trioxide

1996-09-12

1998-07-21

Langel, Wayne

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423491, C01B 900, C01G 3000

Patent

active

057831661

ABSTRACT:
A process for the production of antimony trioxide comprising the steps of: (i) reacting antimony trisulfide with iron (III) chloride to produce antimony trichloride; and (ii) hydrolyzing antimony trichloride to produce antimony trioxide. In a preferred embodiment, the process is substantially closed or near-closed loop. Antimony trioxide is a known flame retardant for use in plastics, ceramics and the like.

REFERENCES:
patent: 2102737 (1937-12-01), Peck et al.
patent: 3872210 (1975-03-01), Ukaji et l.
patent: 3917793 (1975-11-01), Shafer
patent: 3944653 (1976-03-01), Stewart et al.
patent: 4078917 (1978-03-01), Swanson
patent: 4391792 (1983-07-01), Bloise et al.
patent: 4532112 (1985-07-01), Nakahira et al.
Chemical Abstracts Citation 110:78733.
"Inorganic And Theoretical Chemistry," J.W. Mellor, vol. IX.

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