Chlorpyrifos
CAS Number
2921-88-2Synonym
Dursban™, Equity™, Lorsban™, Whitmire PT 270, Empire 20, Chemical name (IUPAC): O,O-diethyl O-3,5,6-trichloro-2-pyridyl phosphorothioate
Occurrence/Use
Organophosphate pesticide
Child-Specific Reference Dose
| Child-specific refence dose (chRD) (mg/kg-day, unless noted): | 1.0 E-4 |
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| Last chRD revision: | 06/2010 |
| chRD Comments: |
OEHHA 2010. Child-Specific Reference Doses (chRDs) for School Site Risk Assessment: Chlorpyrifos. |
Cancer Potency Information
| Comments/References: |
Child-Specific Reference Dose (chRD): 0.0001 mg/kg-day (This reference value is based on cholinesterase inhibition, and is not related to Cancer Potency Factors.) |
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Proposition 65
MADL w/ File
Chemical Status
| Reproductive Toxicity : | Currently listed |
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Reproductive Toxicity
| Listed as causing: | Developmental Toxicity |
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| Developmental Toxicity | |
| Date of Listing: | |
| Basis for Listing : | State's Qualified Experts |
Safe Harbor Levels
| Reproductive Toxicity | |
| Maximum Allowable Dose Level (MADL) : | 7.2 (dermal) µg/day |
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| Maximum Allowable Dose Level (MADL) - Inhalation: | 0.58 µg/day |
| Maximum Allowable Dose Level (MADL) - Oral: | 0.58 µg/day |
Documents, Presentations, and Publications
| Reproductive Toxicity: |
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Comments
Public notices related to this chemical
- Announcement of DARTIC Meeting and Availability of Hazard Identification Materials for Chlorpyrifos and n-Hexane
- Chemicals Listed Effective December 15, 2017 as Known to the State of California to Cause Reproductive Toxicity: Chlorpyrifos and n-Hexane
- Amendment to Section 25805 Specific Regulatory Levels: Chemicals Causing Reproductive Toxicity Maximum Allowable Dose Levels For Chlorpyrifos (Oral, Inhalation And Dermal Exposures)
- Notice of Adoption of Amendment to Section 25805 Specific Regulatory Levels: Chemicals Causing Reproductive Toxicity Maximum Allowable Dose Levels For Chlorpyrifos (Oral, Inhalation And Dermal Exposures)
Notice of Adoption of Amendment to Section 25805 Specific Regulatory Levels: Chemicals Causing Reproductive Toxicity Maximum Allowable Dose Levels For Chlorpyrifos (Oral, Inhalation And Dermal Exposures)