Dichlorvos

MedEd Pesticide lists Dichlorvos as an insecticide in the organophosphate class.

MedEd Pesticide Summarizes Dichlorvos at a Glance

Type

Insecticide

Chemical class

Organophosphate

CAS number

62-73-7

Formula

C4H7Cl2O4P

Molar mass

220.97 g/mol

EU status

Not approved as an active substance in the EU.

US status

Registered with EPA. 42 active products contain Dichlorvos.

MedEd Pesticide Summarizes Dichlorvos’s Toxicity Records

MedEd Pesticide holds 325 toxicity records for Dichlorvos, from 8 sources. The headline values are below.

Oral LD50 in ratsAcute, swallowed

Lowest reported 17 mg/kg, median 57 mg/kg, from 3 records.

Dermal LD50Acute, skin contact

Lowest reported 0.75 mg/kg, median 53.875 mg/kg, from 2 records.

Lowest NOAELLong term, mammals

0.0002765 mg/kg-day in rat, 24 months. Source: ToxRefDB.

EPA signal wordsActive US products

Danger 21, Warning 15, Caution 6.

See all 325 Dichlorvos toxicity records in the explorer. The records come from EPA’s Toxicity Values Database, and the methodology explains their limits.

MedEd Pesticide Reports Dichlorvos’s EU Safety Reference Values

MedEd Pesticide takes these values from the EU, which sets them when it assesses an active substance. They are expressed per kilogram of body weight.

ADIAcceptable daily intake

0.00008 mg/kg bw/dayThe amount a person can take in every day over a lifetime without appreciable health risk.

ARfDAcute reference dose

0.002 mg/kg bwThe amount that can be taken in over a short period, such as one meal or one day, without appreciable health risk.

AOELAcceptable operator exposure level

0.0005 mg/kg bw/dayThe level of exposure for people who apply the pesticide at which no adverse effect is expected.

MedEd Pesticide Lists Dichlorvos’s EU Hazard Classification

MedEd Pesticide lists the harmonised EU hazard statements for Dichlorvos below.

• H330 Fatal if inhaled
• H301 Toxic if swallowed
• H311 Toxic in contact with skin
• H400 Very toxic to aquatic life
• H317 May cause an allergic skin reaction

MedEd Pesticide takes EU status, reference values and hazard classification from the EU Pesticides Database. MedEd Pesticide takes US status from EPA’s Pesticide Product Information System (dated 2026-10-13) and chemical identity from PubChem. Retrieved 2026-10-16. Values and approvals change, so check the source for the current entry. See the methodology and the glossary, or compare Dichlorvos with another pesticide.

MedEd Pesticide. (2026). Dichlorvos. https://mededpesticide.org/pesticides/dichlorvos/ (accessed Month Day, Year)