Antimony trioxide

Antimony trioxide

Antimony(III) oxide; Antimony sesquioxide; Antimony white; Flowers of antimony

CAS 1309-64-4

Chemical Formula Sb₂O₃

Molecular Weight 291.52 g/mol

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Antimony(III) oxide is the inorganic compound. It is found in nature as the minerals valentinite and senarmontite.It is a white powder that is often added to materials to help them resist catching fire. It can be found naturally but is also made in factories. It doesn’t mix with water, but it can dissolve in strong acids or bases. While useful, it can be harmful if breathed in or swallowed, so safety gear is important when handling it.

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Industrial Uses

1. Polymers & Resins

  • Flame Retardant: Antimony trioxide is widely used as a flame retardant synergist in combination with halogenated compounds. It is commonly added to plastics, such as polyvinyl chloride (PVC), polyethylene, polystyrene, and other polymers, to enhance fire resistance by promoting the formation of a char layer and reducing flammability.
  • Stabilizer: In some plastic applications, it acts as a stabilizer that helps in maintaining the physical and chemical properties of the plastic, especially during high-temperature processing.

2. Fabric & Solutions

  • Flame Retardant for Fabrics: Antimony trioxide is used in the textile industry as a flame retardant for fabrics and textiles. It is often applied to materials such as curtains, upholstery, and carpets to reduce flammability and improve fire safety in public and residential spaces.
  • Opacifier and White Pigment: Antimony trioxide is used as an opacifier and white pigment in various paints and coatings. It provides opacity and improves the durability of paints when exposed to weathering and environmental factors.

3. Chemical Synthesis

  • Catalyst in Chemical Reactions: Antimony trioxide is used as a catalyst in the production of polyethylene terephthalate (PET) and other polyester fibers. It facilitates the polymerization process, improving the efficiency and yield of the reaction.
  • Polyester Production: In the chemical industry, antimony trioxide is also used as a catalyst for the production of polyester resins, which are utilized in various applications, including fibers, films, and bottles.

4. Construction

  • Insulation Materials: It is used in insulation materials, such as foams and coatings, to improve fire resistance and safety in construction and building applications. This helps to slow down the spread of fire and reduces smoke production in case of a fire.
  • Polymer Additive: Antimony trioxide is used in construction materials to enhance the fire resistance of certain plastic or polymer-based products.
  • Coatings: It can also be used in coatings applied to construction materials to reduce flammability.

5. Food & Beverage

  • Clarifying Agent: Antimony trioxide can be used as a clarifying agent in the production of glass used in food containers and packaging.
  • Pigment: It may be utilized in certain food-contact materials, helping impart a white pigment to plastics or packaging materials.
  • Wine Glass Production: Antimony trioxide is used as a fining agent in the production of high-quality glassware, including wine glasses, contributing to their clarity and brilliance.

Specifications

Assay ≥ 99%
Appearance White, odorless crystalline powder
Odor Odorless
Boiling Point Sublimes (does not have a defined boiling point)
Melting Point 656°C (1213°F)
Density 5.2 - 5.7 g/cm³ at 25°C
Solubility Insoluble in water; soluble in acids
Viscosity Not applicable (solid form)
Flash Point Not applicable (non-flammable)

Hazard Symbols

Irritants/Sensitisers/Other Hazards

FAQs

1. What is the current price of Antimony trioxide in India?
The price of Antimony trioxide can vary based on factors such as purity, quantity, etc. For the most accurate and competitive pricing, please contact us at +91.979 979 2121 directly for a customized quote tailored to your needs.

2. Where can I buy Antimony trioxide in India?
You can purchase Antimony trioxide from MULTICHEM, a leading importer with a reputation for quality and reliability. We provide convenient options for bulk orders and direct shipments across India. For more details on how to place an order, please visit our website or contact our sales team.

3. What is the minimum order quantity (MOQ) for Antimony trioxide ?
Our minimum order quantity (MOQ) for Antimony trioxide is designed to cater to both small-scale and large-scale needs. The MOQ depends on the packing size of the product which could range from 25 kg to 250kg.

4. How can I ensure the quality of Antimony trioxide supplied by Multichem?
We adhere to stringent quality control processes to ensure that our products meet the highest standards of purity and effectiveness. They undergo rigorous testing and quality checks to guarantee that they comply with industry specifications. We provide a Certificate of Analysis (CoA) with every shipment to ensure transparency and quality assurance.