Methyl parathion
CAS: 298-00-0 | Type: insecticide
High Risk (Adults)
Safety Summary
Hazard Profilehazardous
Risk (Adults)High
Regulatory Status
SummaryIARC: Group 3
NGO listOn the TEDX List of Potential Endocrine Disruptors (The Endocrine Disruption Exchange, a non-governmental list; last updated September 2018). This is a list membership, not a regulatory classification. Source: the TEDX List export (publisher's page)
Molecular FormulaC8H10NO5PS
Molecular Weight263.21
Sources
These citations are the ones recorded for the human adult context.
- IARC Monographs Volume 30: Occupational Exposures in Insecticide Application and Some Pesticides — Parathion and Methyl Parathion Group 3 Classification (1983) REGULATORY · 1983
- US EPA: Methyl Parathion Reregistration Eligibility Decision — Risk Assessment, Dietary and Occupational Exposure, FQPA Safety Factor, and Cancellation (2006) REGULATORY · 2006
- IARC Monographs, List of Classifications REGULATORY · 2026
- where to look PubChem: Toxicity section (CID 4130) PUBCHEM
- NIOSH Pocket Guide to Chemical Hazards: Methyl parathion (npgd0427) REGULATORY
- TEDX List of Potential Endocrine Disruptors, full export (Excel from the publisher's own search, operator-saved 2026-10-08; list last updated September 2018) REFERENCE_DATABASE
- OEHHA Proposition 65 List of Carcinogens or Reproductive Toxicants (CSV, list date 31-Jul-26) REGULATORY
- where to look CAMEO Chemicals, as recorded by PubChem (Experimental Properties, CID 4130; where-to-look, not a source of this value) DATABASE · 2026
- EPA CompTox CTX API: predicted properties for DTXSID1020855 (Methyl parathion) REFERENCE
- ECHA Annex VI to CLP: the unofficial Excel table (up to and including the 23rd ATP) REGULATORY
Same data as the API response, which is open and needs no key. The full per-record source list is available to authenticated callers.
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