Ethion

• Methylene- S, S' -bis ( O, O- diethyl dithiophosphate )
• Diethion
• O, O, O ', O'- tetraethyl S, S'- methylenebis ( phosphorodithioate )

Liquid

Liquid

1.22 g · cm -3

-13 To -12 ° C

165 ° C at 0.4 mbar

0.0002 Pa ( 25 ° C)

• Insoluble in water
• Soluble in ethyl alcohol, methyl alcohol, and most organic solvents
• Slightly soluble in acetone and chloroform

1,549

Risk

Template: Infobox chemical / molecular formula search available

Ethion is a chemical compound from the group of Thiophosphoric.

Production and representation

Ethion can by reaction of dibromomethane with the sodium salt of O, O- diethyl dithiophosphate and O, O- or carbonyl Diethyldithiophosphorsäure of O, O- Diethylphosphordithioat obtained with formaldehyde.

Properties

Ethion is a colorless to brown in pure form odorless liquid. The technical product has a strong odor. The connection is in normal conditions and in closed vessels stable, slowly oxidized in air and is hydrolyzed under acidic and basic conditions.

Use

Ethion is used as an insecticide, and was first made ​​by the FMC Corporation in the market. It was approved in the 1950s in the United States for use in citrus fruits. 1998, the application was subjected to restrictions. It acts as a cholinesterase inhibitor.

In Germany, Austria and Switzerland No pesticides are allowed containing ethion as active ingredient.

Trade names

Ethion was also distributed under the trade names Ethanox, Ethiol, Hylemox, Nialate, Rhodiacide, Rhodocide, RP- thione, Tafethion, Vegfru Fosmite.