Products
Our Technology
Sustainability & Compliance

Home / Products/ Antimony Trioxide

Product image

ELRASATM - ATOx

Antimony Trioxide
CAS NUMBER - 1309-64-4
Technical Data Sheet
Technical Data Sheet
Basic Information
Product Specification
About Product
Antimony Trioxide is a white, crystalline powder primarily used as a flame retardant synergist in plastics, rubber, textiles, and electronics. It enhances the flame-retardant properties of materials by promoting char formation and reducing smoke production. Additionally, it serves as a catalyst in the production of polyethylene terephthalate (PET) and as an opacifying agent in glass and ceramics.

Product Specification

SYNONYMS

Antimony(III) oxide, Antimony sesquioxide, Flowers of antimony, Senarmontite, Valentinite

MOLECULAR WEIGHT

291.52 g/mol

CAS NUMBER

1309-64-4

CHEMICAL FORMULA

Sb2O3

HS CODE

28258000

DENSITY

5.67 g/cm³

MELTING POINT

656 °C

BOILING POINT

1425 °C

VISCOSITY

N/A

SHELF LIFE

-

TYPICAL PROPERTIES

White crystalline powder, insoluble in water, soluble in acids

APPEARANCE

White crystalline powder

Packaging Type

bag

Sb2O3

bags

Chemical Name

Antimony Trioxide

Industry

Chemical Intermediates

Application of Antimony Trioxide

Flame Retardant Synergist: Used with halogenated flame retardants to reduce smoke and improve flame resistance in plastics, rubber, textiles, and electronics.

Catalyst in PET Production: Enhances polymerization efficiency in PET bottle, sheet, and fiber manufacturing.

Opacifying Agent: Provides opacity and whiteness in glass, ceramic tiles, enamel coatings, and specialty materials.

Pigment in Paints & Coatings: Improves coverage, whiteness, and opacity in industrial coatings and paints.

Rubber & Plastic Additive: Enhances durability, heat stability, and fire resistance.

About Product

Antimony Trioxide manufacturers and distributors supply this essential flame-retardant synergist to industries requiring high performance and safety. As a trusted supplier, we ensure consistent purity, optimized particle size, and strong stability suitable for manufacturing applications.


Our Antimony Trioxide is widely preferred for its effectiveness in flame-retardant systems, catalytic capabilities, and opacity enhancement in ceramics and coatings. Built on quality, reliability, and global sourcing strength, we ensure seamless supply chain support across all industries.


Features of Antimony Trioxide

  • Highly Effective Flame Retardant Synergist enhancing smoke suppression.
  • High-Purity Product suitable for plastics, textiles, and electronics.
  • Versatile Industrial Use in PET, glass, ceramics, and coatings.
  • Consistent Quality & Particle Size for reliable performance.
  • Global Supply Chain ensuring availability and timely delivery.

Features of Antimony Trioxide

  • Effective Flame Retardant Synergist: Enhances flame retardancy and reduces smoke production in various materials.
  • High Purity Standards: Ensures optimal performance in plastics, textiles, and electronics.
  • Versatile Applications: Used in PET production, glass, ceramics, and as a colorant in paints and coatings.
  • Eco-Friendly Production: Committed to sustainable manufacturing practices.
  • Reliable Supply Chain: Ensures consistent availability and quality for global markets.

Request A Quote / Sample
Talk to an Expert

Product FAQs

What is Antimony Trioxide used for?

+

Is Antimony Trioxide safe to use?

+

How should Antimony Trioxide be stored?

+