Common name

malathion

Product category

Insecticide, acaricide

Chemical name

diethyl (dimethoxythiophosphorylthio)succinate; S-1,2-bis(ethoxycarbonyl)ethyl O,O-dimethyl phosphorodithioate

CAS Number

121-75-5

Molecular formula

C₁₀H₁₉O₆PS₂

appearance

clear, amber liquid

packing

application

Biochemistry

Cholinesterase inhibitor; proinsecticide, activated by metabolic oxidative desulfuration to the corresponding oxon. 

Mode of action

Non-systemic insecticide and acaricide with contact, stomach, and respiratory action. 

Uses

Used to control Coleoptera, Diptera, Hemiptera, Hymenoptera and Lepidoptera in a wide range of crops, including cotton, pome, soft and stone fruit, potatoes, rice and vegetables. Used extensively to control major arthropod disease vectors (Culicidae) in public health programmes, ectoparasites (Diptera, Acari, Mallophaga) of cattle, poultry, dogs and cats, human head and body lice (Anoplura), household insects (Diptera, Orthoptera), and for the protection of stored grain. Typical application rates for agricultural uses 0.5-1.25 kg/ha. Phytotoxicity

Non-phytotoxic in general, if used as recommended, but glasshouse cucurbits and beans, certain ornamentals, and some varieties of apple, pear, and grape may be injured. 

Formulation types

DP; EC; EW; UL; WP. 

Compatibility

Incompatible with alkaline materials (residual toxicity may be decreased).