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Dacthal Quickview (CASRN 1861-32-1)

Health assessment information on a chemical substance is included in IRIS only after a comprehensive review of toxicity data by U.S. EPA health scientists from several Program Offices, Regional Offices, and the Office of Research and Development.

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Status of Data for Dacthal

File First On-Line: 08/22/1988; Last Significant Revision: 08/01/1994

Category (section)
Last Revised
Oral RfD Assessment Yes 08/01/1994
Inhalation RfC Assessment No
Carcinogenicity Assessment No
  • 1861-32-1
  • 1,4-Benzenedicarboxylic acid, 2,3,5,6-tetrachloro-, dimethyl ester
  • Benzoic acid, 3,6-dichloro-2-methoxy-
  • Chlorothal
  • Chlorthal-dimethyl
  • Chlorthal-methyl
  • DAC 893
  • Dacthalor
  • Dimethyl 2,3,5,6-tetrachloroterephthalate
  • Fatal
  • Tetrachloroterephthalic acid dimethyl ester
  • more...
Dacthal Source Documents
Chronic Health Hazard Assessments for Noncarcinogenic Effects

Reference Dose for Chronic Oral Exposure (RfD)

Critical Effect
Point of Departure*
Effects on the lungs, liver, kidney, thyroid and thyroid hormones in males and females and eyes of females NOAEL : 1 mg/kg-day 100 1 x10-2 mg/kg-day

* The Point of Departure listed serves as a basis from which the Oral RfD was derived. See Discussion of Conversion Factors and Assumptions for more details.

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Reference Concentration for Chronic Inhalation Exposure (RfC)

Not Assessed under the IRIS Program.

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Carcinogenicity Assessment for Lifetime Exposure

Quantitative Estimate of Carcinogenic Risk from Oral Exposure

  • Not Assessed under the IRIS Program.

Quantitative Estimate of Carcinogenic Risk from Inhalation Exposure

  • Not Assessed under the IRIS Program.

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