See All ProductsChlorpyrifos

Action

Insecticide

Use

For aphids, ants, armyworm, billbugs, chinch bugs, corn borers, corn earworm, corn rootworm, cotton leafworm, cutworms, flea beetles, grasshoppers, grubs, lesser cornstalk borer, locusts, mole crickets, seedcorn maggot and sowbugs in field crops, forage, nursery crops, ornamentals, vegetables, and dormant application to fruit trees.

Formulation

Emulsifiable concentrate, dust, flowable, granular bait, wettable powder, microcapsule, pellet, spray.

Identification

Common Names

Chlorpyrifos (ANSI, BSI, ISO-E, ISO-F, pa ISO, ESA); chlorpyriphos (JMAF, ISO-F, pa ISO); chlorpyriphos-ethyl (France)

Exp. Code Number

Dowco 179 (Dow Chemical Co.)

CAS Code

2921-88-2

Other Code Numbers

EINECS 220-864-4; OMS 971 (WHO); SHA 059101

Chemistry

Composition

O,O-Diethyl O-(3,5,6-trichloro-2-pyridinyl) phosphorothioate

Class

Organophosphate.

Properties

White granular crystals. Melting point 41°-42°C. Soluble in acetone, benzene, chloroform, ethanol, iso-octane, methanol, and organic solvents.

Mode of Action / Resistance Management

Chemical Group

organophosphates

Mode of Action

Acetylcholinesterase (AChE) inhibitors

Action Group

IRAC Group 1B

Environmental Guidelines

Hazard

Fish: LC50 0.18 (24 h) (goldfish); < 1 mg/l (mosquito fish). Bird: Oral LD50 32 mg/kg (hen). Bee: Toxic

Water Solubility

2 ppm at 25°C

Safety Guidelines

Signal Words

DANGER; WARNING; CAUTION

Toxicity Classes

I; II; III

Toxicity

(Rat): Oral LD50 96-270 mg/kg. (Rabbit): Dermal LD50 2000 mg/kg. (Guinea pig): Oral LD50 504 mg/kg

Spill Control/Cleanup

Large liquid spillage should be dammed-off and pumped into containers; soak up remainder with absorbent material and dispose of in accordance with local regulations. Solid spillage should be picked up with an industrial vacuum cleaner and disposed of in accordance with local regulations

Product/Waste Disposal

Dispose of by special means (suitable incineration, etc.) in accordance with local regulations

Emergency Guidelines

Flashpoint

102°F (TCC)

Fire Extenguishing Media

Foam, CO2, dry chemical

First Aid

Get medical aid. Eyes: flush immediately with plenty of water. Skin: wash thoroughly with soap and water. Remove contaminated clothing and shoes. Inhalation: remove to fresh air. Ingestion: drink 1-2 glass of water; induce vomiting by touching back of throat with finger. Never give anything by mouth to an unconscious person.