Compound record

9,10-Dihydro-9-oxa-10-phosphaphenanthrene-10-oxide

Also known as DOPO

35948-25-5 · organophosphate flame retardant · flame retardant

DOPO flame retardantepoxyreactive use 6H-Dibenzo[c,E][1,2]oxaphosphinine 6-oxide9,10-Dihydro-9-oxa-10-phosphaphenanthrene 10-oxide6H-Dibenz[c,e][1,2]oxaphosphorin, 6-oxide

Dossier Status Obligations Why Alternatives Changes Similar Sources

CAS 35948-25-5

Formula C12H8O2P+

Molecular weight 215.16 g/mol

InChIKey DWSWCPPGLRSPIT-UHFFFAOYSA-N

Current EU status

Regulatory snapshot for 9,10-Dihydro-9-oxa-10-phosphaphenanthrene-10-oxide

9,10-Dihydro-9-oxa-10-phosphaphenanthrene-10-oxide 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.

Searchers usually land here for the chemical name, CAS number, abbreviation DOPO, and the question of whether the substance is tied to SVHC, REACH, POPs, or SCIP-style compliance work.

No current Candidate List row importedcurrent statuslatest imported framework state

8 Mar 2026latest anchor datelisted, effective, or checked date

Identity

CAS, formula, aliases, and use context

CAS: 35948-25-5
EC: 252-813-7
Formula: C12H8O2P+
Molecular weight: 215.16 g/mol
Primary class: organophosphate flame retardant
Synonym count: 57

Search-friendly summary

9,10-Dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) , CAS 35948-25-5, is tracked here as a flame retardant substance in the organophosphate flame retardant class.

Common names and aliases

6H-Dibenzo[c,E][1,2]oxaphosphinine 6-oxide9,10-Dihydro-9-oxa-10-phosphaphenanthrene 10-oxide6H-Dibenz[c,e][1,2]oxaphosphorin, 6-oxide6H-Dibenz[c,e][1,2]oxaphosphorin 6-oxide63LTW1C2TR6H-Dibenz(c,e)(1,2)oxaphosphorin, 6-oxide

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Status

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Alternatives

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Action prompts

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