DDT

MedEd Pesticide lists DDT as an insecticide in the organochlorine class.

MedEd Pesticide Summarizes DDT at a Glance

Type

Insecticide

Chemical class

Organochlorine

CAS number

50-29-3

Formula

C14H9Cl5

Molar mass

354.5 g/mol

EU status

Not approved as an active substance in the EU.

US status

Not registered with EPA. All 17 products that contained DDT are cancelled.

MedEd Pesticide Summarizes DDT’s Toxicity Records

MedEd Pesticide holds 86 toxicity records for DDT, from 7 sources. The headline values are below.

Oral LD50 in ratsAcute, swallowed

Lowest reported 87 mg/kg, median 100 mg/kg, from 2 records.

Dermal LD50Acute, skin contact

Lowest reported 300 mg/kg, median 1115.5 mg/kg, from 2 records.

Lowest NOAELLong term, mammals

6.6 mg/kg-day in mouse, 78 weeks. Source: ToxRefDB.

See all 86 DDT toxicity records in the explorer. The records come from EPA’s Toxicity Values Database, and the methodology explains their limits.

MedEd Pesticide Reports DDT’s EU Safety Reference Values

MedEd Pesticide finds no safety reference values for DDT in the EU database.

MedEd Pesticide Lists DDT’s EU Hazard Classification

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

• H301 Toxic if swallowed
• H400 Very toxic to aquatic life
• H410 Very toxic to aquatic life with long-lasting effects
• H351 Suspected of causing cancer
• H372 Causes damage to organs through prolonged or repeated exposure

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 DDT with another pesticide.

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