Chlorothalonil
CAS: 1897-45-6 | Type: fungicide
High Risk (Adults)
Safety Summary
Hazard Profilehazardous
Risk (Adults)High
Regulatory Status
SummaryIARC: Group 2B | California Prop 65 listed | EPA CTX / EPA OPP: Likely human carcinogen by all routes of exposure (EPA, 2008)
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 FormulaC8Cl4N2
Molecular Weight265.9
Sources
These citations are the ones recorded for the human adult context.
- US EPA: Chlorothalonil Registration Review — Group B2 Carcinogen (Renal Tubular Tumors), Dietary Risk Assessment, and Aquatic Ecological Risk (2005–2020) REGULATORY · 2020
- EU Commission: Non-Renewal of Approval for Active Substance Chlorothalonil — Regulation (EU) 2019/677; Groundwater Metabolite R471811, Aquatic Risk, IARC Group 2B (Vol 73, 1999) REGULATORY · 2019
- Consolidated TEXT: 32006L0118 — EN — 10.05.2026 REGULATORY
- L_2019114EN.01001501.xml REGULATORY
- PROPOSITION 65 LIST OF CARCINOGENS OR REPRODUCTIVE TOXICANTS REGULATORY · 2026
- IARC Monographs, List of Classifications REGULATORY · 2026
- ECHA Annex VI to CLP: the unofficial Excel table (up to and including the 23rd ATP) (secondary: unofficial by its own statement) REGULATORY
- identity database ECHA CHEM, Download all substances: REACH registrations (ECHA's own list of REACH-registered substances) REGULATORY · 2026
- where to look PubChem: Toxicity section (CID 15910) PUBCHEM
- 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
- where to look CAMEO Chemicals, as recorded by PubChem (Experimental Properties, CID 15910; where-to-look, not a source of this value) DATABASE · 2026
- where to look Hazardous Substances Data Bank (HSDB), as recorded by PubChem (Experimental Properties, CID 15910; where-to-look, not a source of this value) DATABASE · 2026
- EPA CompTox CTX API: predicted properties for DTXSID0020319 (Chlorothalonil) REFERENCE
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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