chem-data European chemical and regulatory registry

Compound record

Antimony trioxide

1309-64-4 · synergist · flame retardant

flame retardantsynergistplastics
Status

Current EU framework read, dates, and source-backed status context.

Lookup labels

Antimony sesquioxideAntimonious oxideDiantimony trioxide
CAS 1309-64-4
Formula O3Sb2
Molecular weight 291.52 g/mol
InChIKey GHPGOEFPKIHBNM-UHFFFAOYSA-N

Current status

EU status, SVHC, REACH, and POPs view

Antimony trioxide is currently surfaced as no current candidate list row imported in the EU.

The current imported view anchors this substance in CandidateList. The live rationale focuses on No positive Candidate List entry captured in the current imported source set, and this page is designed for fast status checks before deeper source review.

This page should answer the direct status question quickly, then show the framework rows that support the answer without forcing the user through a spreadsheet-like table first.

What this status page should answer

The regulatory page for antimony trioxide needs to answer the practical follow-up to an exact-name lookup: whether the substance has any imported Candidate List, REACH, or other EU status signal that changes declaration or substitution work.

In chem-data it sits in flame-retardant, synergist, and plastics routes. That makes it a portfolio-screening substance for compounds, masterbatches, and finished materials rather than a simple one-list lookup.

No current Candidate List row importedstatuslatest imported framework state
8 Mar 2026last checkedlatest authority check date captured
Who should care
  • Article suppliers and importers
  • Materials, formulation, and product-compliance teams
Imported rationale

No positive Candidate List entry captured in the current imported source set

Questions this route should settle

  • Is there any imported positive EU framework row, or is this mainly a monitored identity page today?
  • Does the absence of a current Candidate List row still justify supplier or portfolio review?
  • Which status route should a compliance team cite when a customer asks for the current EU position?

What to do next

Operational routes from the current status

Imported framework rows

Authority-backed detail

CandidateList 8 Mar 2026

No current Candidate List row imported

No positive Candidate List entry captured in the current imported source set

continue routine watchlist monitoring until a substance-specific row is imported

Open official source