Antimony pentoxide
CAS 1314-60-9
EC 215-237-7
Formula O5Sb2
MW 323.52 g/mol
Flame Retardants Plastics & PolymersElectronicsTextile, Leather & PaperBuilding & Construction Flame Retardancy
Description
Antimony pentoxide (CAS 1314-60-9, EC 215-237-7, formula O5Sb2) is an inorganic antimony compound supplied as a yellow powder. It is also known under trade designations including A 1530, A 1550, A 2550, AGO 40, and Antimonic oxide. No E-code applies to this substance.
In polymer and textile processing, antimony pentoxide functions as a flame retardant synergist, primarily used alongside halogenated compounds to interrupt combustion chain reactions and reduce heat release. In electronics and building materials, it is incorporated into coatings, laminates, and cable jacketing to meet fire performance standards required by end-use specifications.
Antimony pentoxide is available in powder form and must be handled in compliance with REACH regulations, including obligations under Annex XVII given its classification as a substance of concern. Suppliers should confirm current SVHC status and provide a compliant Safety Data Sheet. Packaging formats and specific grades should be confirmed at the point of inquiry.
In polymer and textile processing, antimony pentoxide functions as a flame retardant synergist, primarily used alongside halogenated compounds to interrupt combustion chain reactions and reduce heat release. In electronics and building materials, it is incorporated into coatings, laminates, and cable jacketing to meet fire performance standards required by end-use specifications.
Antimony pentoxide is available in powder form and must be handled in compliance with REACH regulations, including obligations under Annex XVII given its classification as a substance of concern. Suppliers should confirm current SVHC status and provide a compliant Safety Data Sheet. Packaging formats and specific grades should be confirmed at the point of inquiry.
Physical Properties
| Melting Point | 655 °C |
| Density | 3.78 g/mL at 25 °C(lit.) |
| Appearance | yellow powder |
| Color | Yellow |
| Form | Powder |
| Water Solubility | Slightly soluble in water. Slowly dissolves in warm HCl and warm KOH. Insoluble in HNO<sub>3</sub> |
Trade & Regulatory
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 3 |
Other Names
Antimony(V) oxide(dioxo-lambda5-stibanyl)oxy-dioxo-lambda5-stibanea1550ago40a2550A 1530ANTIMONY OXIDE
Related Products
Raw Materials
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