Description

Antimony(III) Oxide is a high-purity inorganic compound essential as a flame retardant synergist and industrial catalyst. Its primary value lies in its ability to significantly enhance the fire resistance of plastics, textiles, and coatings when used with halogenated compounds. This material is critical for manufacturers in the polymer, electronics, and construction industries seeking to meet stringent global fire safety regulations.

Application

• Flame Retardant Synergist: A key component in flame-retardant formulations for plastics (PVC, polyolefins), textiles, rubber, and adhesives, used in conjunction with halogenated compounds.
• Catalyst & Opacifier: Serves as a catalyst in the production of polyethylene terephthalate (PET) and as an opacifying agent in ceramics and glass, particularly for enamel and porcelain.
• Electronics & Ceramics: Used in the manufacture of varistors, other electronic components, and as a white pigment in specialty paints and coatings.
• Chemical Intermediate: Acts as a starting material for the synthesis of other antimony compounds, including antimony triacetate and various antimony salts.

Basic Information

Product Name	Antimony(III) Oxide
CAS No.	1327-33-9
Molecular Formula	Sb2O3
Molecular Weight	291.52 g/mol
Synonyms	Antimony Trioxide; Diantimony Trioxide; Antimony Sesquioxide; Antimony White; Flowers of Antimony; ATO; CI 77052; Senarmontite (mineral form); Valentinite (mineral form)
EINECS	215-474-6

Quality Control

Our Antimony(III) Oxide is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, particle size, and chemical composition. Certificates of Analysis (COA) are provided to guarantee traceability, consistency, and compliance with relevant industry and regulatory standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials. Keep container tightly sealed when not in use to minimize exposure to moisture and air.

Specification

Item	Specification
Appearance	White, crystalline powder
Identification (IR)	Conforms
Assay (Sb2O3)	≥ 99.0 %
Arsenic (As)	≤ 0.05 %
Lead (Pb)	≤ 0.05 %
Iron (Fe)	≤ 0.005 %
Particle Size (D50)	1.0 - 3.0 µm (or as specified)
Loss on Drying	≤ 0.5 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.