Dicamba

MedEd Pesticide lists Dicamba as a herbicide in the benzoic acid herbicide class.

MedEd Pesticide Summarizes Dicamba at a Glance

Type

Herbicide

Chemical class

Benzoic acid herbicide

CAS number

1918-00-9

Formula

C8H6Cl2O3

Molar mass

221.03 g/mol

EU status

Approved in the EU since 01/01/2009, current approval expires 31/03/2027.

US status

Registered with EPA. 594 active products contain Dicamba.

MedEd Pesticide Summarizes Dicamba’s Toxicity Records

MedEd Pesticide holds 96 toxicity records for Dicamba, from 7 sources. The headline values are below.

Oral LD50 in ratsAcute, swallowed

Lowest reported 1039 mg/kg, median 1373 mg/kg, from 2 records.

Dermal LD50Acute, skin contact

Lowest reported 1000 mg/kg, median 1500 mg/kg, from 2 records.

Lowest NOAELLong term, mammals

30 mg/kg-day in rabbit, 13 days. Source: ToxRefDB.

EPA signal wordsActive US products

Danger 131, Warning 71, Caution 391.

See all 96 Dicamba toxicity records in the explorer. The records come from EPA’s Toxicity Values Database, and the methodology explains their limits.

MedEd Pesticide Reports Dicamba’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

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

ARfDAcute reference dose

0.3 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

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

MedEd Pesticide Lists Dicamba’s EU Hazard Classification

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

• H302 Harmful if swallowed
• H412 Harmful to aquatic life with long-lasting effects
• H318 Causes serious eye damage

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 Dicamba with another pesticide.

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