Compound record

Resorcinol bis(diphenyl phosphate)

Also known as Mark PFK

57583-54-7 · organophosphate flame retardant · flame retardant

Mark PFK flame retardantelectronicsengineering plastics Fyrolflex RDPPhosphoric acid, 1,3-phenylene tetraphenyl ester1,3-Phenylene tetraphenyl phosphate

Dossier Status Obligations Why Alternatives Changes Similar Sources

CAS 57583-54-7

Formula C30H24O8P2

Molecular weight 574.5 g/mol

InChIKey OWICEWMBIBPFAH-UHFFFAOYSA-N

Current EU status

Regulatory snapshot for Resorcinol bis(diphenyl phosphate)

Resorcinol bis(diphenyl phosphate) 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 Mark PFK, 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: 57583-54-7
EC: 260-830-6
Formula: C30H24O8P2
Molecular weight: 574.5 g/mol
Primary class: organophosphate flame retardant
Synonym count: 32

Search-friendly summary

Resorcinol bis(diphenyl phosphate) (Mark PFK) , CAS 57583-54-7, is tracked here as a flame retardant substance in the organophosphate flame retardant class.

Common names and aliases

Fyrolflex RDPPhosphoric acid, 1,3-phenylene tetraphenyl ester1,3-Phenylene tetraphenyl phosphateTetraphenylresorcinol diphosphateTetraphenyl m-phenylene bis(phosphate)CRR-733S

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Status

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Obligations

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Why monitored

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Alternatives

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Changes

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Action prompts

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