Compound record

Diarsenic trioxide

Also known as HMS2093H20

1327-53-3 · candidate list substance

HMS2093H20 SVHC Candidate ListEU monitoring CHEBI:30621tricyclo[3.3.1.1(3,7)]tetraarsoxanetricyclo(3.3.1.1(3,7))tetraarsoxane

Dossier Status Obligations Why Alternatives Changes Similar Sources

CAS 1327-53-3

Formula As4O6

Molecular weight 395.68 g/mol

InChIKey KTTMEOWBIWLMSE-UHFFFAOYSA-N

Current status

EU status, SVHC, REACH, and POPs view

Diarsenic trioxide is currently surfaced as candidate list substance in the EU.

The current imported view anchors this substance in CandidateList. The live rationale focuses on Carcinogenic (Article 57a), and this page is designed for fast status checks before deeper source review.

This page is meant to answer the direct search query about EU status before you branch into obligations, SCIP, or source verification.

Candidate List substancestatuslatest imported framework state

8 Mar 2026last checkedlatest authority check date captured

Who should care

Article suppliers and importerswatch

What to do next

Operational routes from the current status

Article duties

Check Candidate List threshold and SCIP relevance

Use this when the substance may sit in articles, components, or imported goods and you need to confirm communication and SCIP workflows.

Source check

Verify the legal source before repeating the claim

Every summary should point back to the underlying authority surface. Use the source route when the exact notice, registry entry, or legal text matters.

Imported framework rows

Authority-backed detail

Framework	Status	Listed	Effective	Reason	Obligations	Source
CandidateList	Candidate List substance	28 Oct 2008	Unspecified	Carcinogenic (Article 57a)	check article threshold obligations; review SCIP notification relevance	Candidate List entry - Diarsenic trioxide