CAS 1309-64-4 Antimony(III) oxide - Catalysts / Alfa Chemistry

Synonyms

Diantimony trioxide

Molecular Weight

291.5

Molecular Formula

Sb2O3

Boiling Point

1425 °C (sublimes)

Melting Point

656 °C

Purity

98%

Density

5.2 g/cm³

Appearance

white solid

Storage

-20°C

MDL Number

MFCD00011214

Physical State

Solid

Application

Antimony(III) oxide serves a critical role in various industries due to its versatility and effectiveness in enhancing material properties. Its primary application is as a flame retardant synergist, often used in synergy with halogenated materials to create less flammable chars, crucial for the safety of plastics, rubber, textiles, adhesives, fiberglass, and paper. Besides its fire retardant properties, antimony(III) oxide is employed as a pigment, thanks to its white or gray appearance, enhancing the opacity and color of products like paints, enamels, and certain plastics. In glass production, it acts as a fining agent to remove color and bubbles, while in ceramics and enamels, it increases opacity and surface gloss. Additionally, antimony(III) oxide contributes to automotive brake linings as a friction additive, and is used as a catalyst in PET resin manufacture, highlighting its significance across diverse applications from chemical manufacturing to textile processing.

December 10, 2024

Highly Effective Flame Retardant for Industrial Applications

I used Alfa Chemistry's Antimony(III) Oxide in developing flame retardant polymers for industrial research. Its excellent performance in enhancing fire resistance was outstanding. Versatile and reliable, it's essential for safe material innovation.