Antimony trioxide (Sb2O3) is an inorganic compound that is a white, odorless powder or solid. It 's primarily known for its use as a flame retardant and synergist, particularly when combined with halogenated flame retardants, enhancing their effectiveness.
Definition:
Antimony trioxide is an inorganic compound with the chemical formula Sb2O3.
It 's a white, crystalline powder or solid.
It 's also known as antimony(III) oxide or antimonous oxide.
Applications:
Flame Retardant Synergist:
Antimony trioxide is a key component in flame-retardant systems, especially when combined with halogenated flame retardants. It acts as a synergist, enhancing the effectiveness of these compounds in various materials like plastics, textiles, and coatings.
Catalyst:
Antimony trioxide is used as a catalyst in the production of polyethylene terephthalate (PET).
Other Applications:
It 's also used in pigments, opacifiers for porcelain and enamels, and in certain pharmaceutical formulations.