Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock ( Lock A locked padlock ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

  • Environmental Topics
  • Laws & Regulations
  • Report a Violation
  • About EPA
IRIS
Contact Us

Chlorothalonil

CASRN 1897-45-6 | DTXSID0020319

  • IRIS Summary (PDF) (7 pp, 89 K)
  • Status: EPA announced in a 2004 Federal Register Notice that chemicals used as pesticides would not be re-assessed by the IRIS Program. This entry in the IRIS database is preserved at the request of EPA program and regional offices. Additional toxicological information may be found under "Other EPA Information."

On this page:

  • IRIS Toxicity
    Values
  • Other EPA
    Information

Noncancer Assessment

Reference Dose for Oral Exposure (RfD) (PDF) (7 pp, 89 K) Last Updated: 03/01/1988

System RfD (mg/kg-day) Basis PoD Composite UF Confidence
Urinary 1.5 x 10 -2 Renal tubular epithelial vacuolation NOEL : 1.5
mg/kg-day
100 Medium

Reference Concentration for Inhalation Exposure (RfC) (PDF) (7 pp, 89 K)

Not assessed under the IRIS Program.

Cancer Assessment

Weight of Evidence for Cancer (PDF) (7 pp, 89 K)
Not assessed under the IRIS Program.

Quantitative Estimate of Carcinogenic Risk from Oral Exposure (PDF) (7 pp, 89 K)

Not assessed under the IRIS Program.

Quantitative Estimate of Carcinogenic Risk from Inhalation Exposure (PDF) (7 pp, 89 K)

Not assessed under the IRIS Program.

Other EPA Information

Additional EPA toxicity information may be available by visiting the following sites:
  • Human Health Benchmarks for Pesticides (HHBP). This database provides human health benchmarks for pesticides that may be present in drinking water.
  • Office of Pesticide Programs Pesticide Chemical Search. This database provides links to health effects information and registration status for pesticides.
  • Chemistry Dashboard. This database provides information on chemical structures, experimental and predicted physicochemical, and toxicity data.

Related Links

  • EPA Chemicals Dashboard - Chlorothalonil
  • eChemPortal - Chlorothalonil

Critical Effects

Urinary
Urinary

Chemical Structure

Chlorothalonil

Synonyms

  • Bravo
  • Bravo 6F
  • Bravo-W-75
  • Chloroalonil
  • Chlorothalonil
  • Chlorthalonil
  • DAC 2787
  • Daconil
  • Daconil 2787
  • Dacosoil
  • Exotherm
  • Exotherm termil
  • Forturf
  • Isophthalonitrile, 2,4,5,6-tetrachloro-
  • Isophthalonitrile, tetrachloro-
  • NCI-C00102
  • Nopcocide
  • Nopcocide N-96
  • Nopcocide N40D N96
  • Sweep
  • TCIN
  • TPN
  • Termil
  • Tetrachloroisophthalo-nitrile
  • m-TCPN
  • m-Tetrachlorophthalonitrile
  • meta-Tetrachlorophthalodinitrile
  • 1,3-Benzenedicarbonitrile, 2,4,5,6-tetrachloro-
  • 1,3-Dicyanotetrachlorobenzene
  • 1897-45-6
  • 2,4,5,6-Tetrachloro-3-cyanobenzonitrile
  • IRIS Home
  • About IRIS
  • IRIS Recent Additions
  • IRIS Calendar
  • IRIS Assessments
  • Advanced Search
  • IRIS Program Materials
Contact Us to ask a question, provide feedback, or report a problem.
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshots
  • Grants
  • No FEAR Act Data
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data.gov
  • Inspector General
  • Jobs
  • Newsroom
  • Open Government
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions

Follow.