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Mepiquat chloride Quickview (CASRN 24307-26-4)

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 Mepiquat chloride

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

Category (section)
Last Revised
Oral RfD Assessment On-line 04/01/1991
Inhalation RfC Assessment No data
Carcinogenicity Assessment No data
  • 24307-26-4
  • BAS-083
  • BAS-08300w
  • BAS 08301w
  • BAS 08305 w
  • BAS 08307 w
  • BAS85559x
  • Mepiquat chloride
  • n,n-Dimethyl-piperidinium chloride
  • Piperidinium, 1,1-dimethyl-, chloride
  • Pix
  • more...
Mepiquat chloride Source Documents
Revision History
Date Section Description
04/01/1997 III., IV., V. Drinking Water Health Advisories, EPA Regulatory Actions, and Supplementary Data were removed from IRIS on or before April 1997. IRIS users were directed to the appropriate EPA Program Offices for this information.
Chronic Health Hazard Assessments for Noncarcinogenic Effects

Reference Dose for Chronic Oral Exposure (RfD)

Critical Effect
Point of Departure*
Sedation and tonoclonic spasms; decreased food intake and body weights; hematologic effects NOEL : 2.5 x101 mg/kg-day 1000 3 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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