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Phosmet

CAS 732-11-6 · 100/100 · High conf.

Also registered as 1 other CAS number

5104-30-3

Phosmet chemical structure

Concern score

100/100Critical concern driven by cmr.
High confidence

Phosmet in plain language

What it is

Also known as O,o-dimethyl s-phthalimidomethyl phosphorodithioate · Decemthion · Decemthion EK 20 · Decemthion P-6 · Decemtion · Decemtion P-6

Show all 26 names

Fosmet · Ftalophos · Imidan · Imidan WP · Imidathion · Kemolate · O,o-dimethyl phthalimidomethyl phosphorodithioate · PMP (Pesticide) · Percolate · Phtalofos · Phthalophos · Prolate · Prolate 5 Dust · Prolate E · Safidon · Simidan · Smidan · Stauffer R 1504 · phosmet (sara 302) · phosmet (sara iii)

What it does

Used in consumer products as an antimicrobial.

  • Antimicrobial
Is it a concern?
Critical concern: classified for carcinogenic, mutagenic or reproductive toxicity (CMR). It is banned in EU cosmetics.

Why it's flagged

  • Cmr

Phosmet (ISO); S-[(1,3-dioxo-1,3-dihydro-2H- isoindol-2-yl)methyl]-O,O-dimethyl phosphorodithioate; O,O-dimethyl-S-phthalimidomethyl phosphorodithioate is prohibited in cosmetic products under Annex II of the EU Cosmetics Regulation (EC) 1223/2009.

RestrictedEU EC — banned

The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.

Regulation

Restrictions first, then routine listings from published regulatory sources.

  • EU Annex II — prohibited
  • EU prohibited in cosmetics

Recorded in these product areas

  • Found in consumer products
  • Industrial
  • EUEC

    Annex II of EU Cosmetics Regulation (EC) 1223/2009: substances prohibited in cosmetic products. CMR: Reprotoxic Cat. 2()

    banned
    View source →
  • EUCosIngActiveCosmetics Regulation annex II / ref 1612.
    • Cosmetics Regulation annex II / ref 1612.Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 5 composition records across product categories including Pet and animal care, Laboratory supplies. EPA CPDat classifies this chemical for functional uses including Biocide, Degradant/impurity.
    • EPA CPDat observed this chemical in 5 composition records across product categories including Pet and animal care, Laboratory supplies. EPA CPDat classifies this chemical for functional uses including Biocide, Degradant/impurity.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

No expert opinion on file for Phosmet. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

  • SCCS

    EU Scientific Committee on Consumer Safety

    No SCCS opinion on file.

  • CIR

    Cosmetic Ingredient Review (US expert panel)

    No CIR safety assessment on file.

Evidence & sources

No graded research studies for Phosmet yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

7 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →
  • EU CosIng Cosmetics Regulation Annexes

    regulatory · updated 2020-07-31

    Open →
  • EPA Chemical and Products Database

    exposure · updated September 1997

    Open →
  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →
  • FDA GSRS UNII

    registry · updated 2026-02-26

    Open →
  • openFDA Substance

    registry · updated 2026-05-24

    Open →
  • PubChem Live Enrichment

    chemistry · updated 2026-05-17

    Open →

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Fragrance avoidance

No fragrance-linked caution surfaced in the current profile.

Good fit

This ingredient does not currently read as a fragrance-linked driver in the published evidence and hazard profile.

Where it has been recorded

How often EPA CPDat has listed Phosmet in a product composition. These are source records, not Greenveil catalog products.

Source records

5

Named organisations

6

Pet and animal careLaboratory supplies

Typical roles

Antimicrobial
See products using Phosmet →