What is Antimony Trioxide?
Antimony Trioxide
Antimony Trioxide (Sb2O3) fine white oxide powder with grade-dependent particle-size and purity ranges.
Technical owner: Aurexene Materials Engineering Team · Last updated: 2026-06-18
What It Is Not
- Antimony Trioxide is not a standalone universal flame retardant; it is commonly screened as a synergist within a complete flame-retardant formulation.
When Not to Use It
- Do not use Antimony Trioxide when customer, regulatory, exposure, recycling, or brand requirements mandate an antimony-free formulation.
Intrinsic Screening Summary
- Identity screen
- Sb2O3; Fine white oxide powder
- Intrinsic feature
- Grade-dependent particle size, oxide chemistry, and dispersion quality determine whether Sb2O3 can be evaluated for optical response, laser interaction, or host-matrix limits.
- Material-level integration
- Required when the formulation has moisture, dust, regulatory, or handling constraints.
Application Fit
Selection & Validation Framework
| Decision Question | Material-Level Answer |
|---|---|
| Storage and handling | Required for: Laser Marking Pigments. Measure: visible transmission; haze; color coordinates; NIR transmission; storage stability; moisture exposure; redispersion. Sample state: final host formulation or part state. Failure signals: Required when the formulation has moisture, dust, regulatory, or handling constraints.. |
Material Identity & Specification Status
Approved values for Particle size, Purity, and Packaging are not published; confirm them during quotation or sample review.
| Property | Value |
|---|---|
| Composition | Sb2O3 |
| CAS / identity | 1309-64-4 |
| Morphology | Fine white oxide powder |
| Density | 5.2-5.9 g/cm3; crystal form dependent |
| Storage | Dry sealed container |
Why It Works
| Structure | Function | Mechanism |
|---|---|---|
| Sb2O3 inorganic oxide powder | Conditional antimony oxide route for formulation screening when antimony chemistry is acceptable | Grade-dependent particle size, oxide chemistry, and dispersion quality determine whether Sb2O3 can be evaluated for optical response, laser interaction, or host-matrix limits. |
Compare Material Routes
Technical Guides
| Technical Guide | Summary |
|---|---|
| Aging, Heat, Humidity, Extraction, and Migration Testing for Flame-Retardant Compounds | Aging, Heat, Humidity, Extraction, and Migration Testing for Flame-Retardant Compounds — a method-conditioned engineering guide for Flame Retardants covering structure-function behavior at the material, interface, and finished-system boundary, process limits, validation, and qualification boundaries. |
| Balancing Flame-Retardant Loading with Melt Flow, Strength, Flexibility, and Surface Finish | Balancing Flame-Retardant Loading with Melt Flow, Strength, Flexibility, and Surface Finish — a method-conditioned engineering guide for Flame Retardants covering structure-function behavior at the material, interface, and finished-system boundary, process limits, validation, and qualification boundaries. |
| Catalyst Precipitation, Deposits, Carryover, and Reactor-Fouling Failures | Catalyst Precipitation, Deposits, Carryover, and Reactor-Fouling Failures — a method-conditioned engineering guide for Catalysis covering structure-function behavior at the material, interface, and finished-system boundary, process limits, validation, and qualification boundaries. |
| Catalyst Solubility, Speciation, and Activity in Polyester Reaction Media | Catalyst Solubility, Speciation, and Activity in Polyester Reaction Media — a method-conditioned engineering guide for Catalysis covering structure-function behavior at the material, interface, and finished-system boundary, process limits, validation, and qualification boundaries. |
| Color Shift, Opacity, Bloom, Migration, and Surface-Deposit Failures | Color Shift, Opacity, Bloom, Migration, and Surface-Deposit Failures — a method-conditioned engineering guide for Flame Retardants covering structure-function behavior at the material, interface, and finished-system boundary, process limits, validation, and qualification boundaries. |
Commercial Availability
Supplier role: Request confirmation
Supply status: Request confirmation
Sample status: Sample availability requires confirmation
Commercial details are not published until the source and verification fields are complete and the Supplier Data Packet is signed by the sales owner, technical reviewer, and resource/compliance owner. Request current grade, form, sample, packaging, and delivery confirmation.
Documents & Inquiry
Document access follows the current approval state. Unapproved or unavailable files route to a document request instead of a public download.
Technical Data Sheet
Request required
Safety Data Sheet
Request required
Grade, Sample & Qualification Support
The Aurexene Materials Engineering Team can review the required form, host system, formulation or process, target, sample quantity, volume and timeline, and the grade-specific evidence needed before qualification.
Review Lab Capabilities for sample evaluation and qualification support, or Production Capabilities for scale-up, quality, documentation, and supply support.
Request Antimony Trioxide Sample / Qualification Review