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Product Code M2399A1-50g
Price £105 ex. VAT

Antimony Oxide (Sb2O3) Powders, Nanoparticles < 210 nm average particle size, >99.97% purity

High purity Antimony oxide (Sb2O3) Powders for applications in flame retardant, catalysts, batteries, and optoelectronics

Technical Data | MSDS | Literature and Reviews

Antimony oxide (Sb2O3), CAS number 1309-64-4, is an inorganic semiconducting material with high photon conductivity and superior chemical stability. It naturally occurs as the minerals valentinite and senarmontite.

Antimony based materials show great potential as anode materials for lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs), owing to their high energy density as well as long lifespan. Sb2O3 composite exhibits high specific charge capacity of 640.8 mA h g−1 at a current density of 0.2 A g−1 after 50 cycles in lithium-ion batteries. Sb2O3 anode exhibits a high capacity of 550 mA h g–1 at 0.05 A g–1 and 265 mA h g–1 at 5 A g–1 and a reversible capacity of 414 mA h g–1 at 0.5 A g–1 is achieved after 200 stable cycles in sodium-ion batteries.

High Purity Antimony Oxide

High Purity

>99.97% purity

Versatile 1309-64-4

Versatile use

Applications in flame retardant, catalysts, batteries, and optoelectronics

High energy density & long lifespan 1309-64-4

High photon conductivity

High energy density & long lifespan

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Sb2O3 can greatly increase flame retardant effectiveness while used in combination with halogenated flame retardants as a synergist in coatings, plastics, fibre, paints, adhesives, rubber, and textiles. Antimony oxide also finds applications as catalyst in the production of polyethylene terephthalate (PET) and rubber, and as opacifying agent for glasses, ceramics, and enamels.

Technical Data

CAS Number 1309-64-4
Chemical Formula Sb2O3
Molecular Weight 291.52 g/mol
Chemical Name Antimony oxide
Synonyms Antimony(III) oxide, Diantimony trioxide. Antimonous oxide
Classification / Family 2D semiconducting materials, nanomaterials, Solid lighting, metal oxides
Colour White powder

Antimony Oxide (Sb2O3) Powders

Product Code M2399A1
Average Particle Size (APS) < 210 nm
Specific Surface Area (SSA) > 10 m2/g
True Density 5.8 g/cm3
Bulk Density 0.6 g/cm3
Melting Point 665 °C (lit.)
Purity > 99.97%

Pricing Table

Product Code Weight Price
M2399A1 50 g £105
M2399A1 100 g £175

*For larger orders please contact us to discuss prices.

MSDS Documents

Antimony oxide (Sb2O3) nanoparticles MSDSAntimony Oxide Powders MSDS Sheet


  1. Synthesis and characterization of Sb2O3 nanoparticles by liquid phase method under acidic condition, W. Qi et al., J. Cryst. Growth, 588, 126642 (2022); DOI: 10.1016/j.jcrysgro.2022.126642.
  2. Ultrafine Sb2O3 Nanoparticle-Decorated Reduced Graphene Oxide as an Anode Material for Lithium-Ion Batteries, X. Chen et al., Energy Fuels, 37 (7), 5586–5594 (2023); DOI: 10.1021/acs.energyfuels.3c00172.
  3. Sb2O3 Nanoparticles Anchored on Graphene Sheets via Alcohol Dissolution–Reprecipitation Method for Excellent Lithium-Storage Properties, X. Zhou et al., ACS Appl. Mater. Interfaces, 9 (40), 34927–34936 (2017); DOI: 10.1021/acsami.7b10107.
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