Phorate

• O, O- diethyl S-( ethylthiomethyl ) phosphorodithioate
• Thimet

Colorless to yellowish liquid with an intense odor

Liquid

1.156 g · cm -3

-42.9 ° C

75-78 ° C ( 0.13 mbar)

Negligible at 25 ° C.

• Practically insoluble in water (50 mg · L -1 in ° C)
• Soluble in most organic solvents such as acetone

1.5329 at 25 ° C.

Risk

1 mg · kg -1 ( LD50, rat, oral)

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Phorate is an active ingredient for plant protection and a chemical compound from the group of Thiophosphoric.

Production and representation

Phorate can be obtained with formaldehyde and ethanethiol by reacting O, O- diethyl dithiophosphate.

Alternatively, it can also be prepared by reacting O, O- diethyl dithiophosphate are obtained with Chlormethylethylsulfid.

Properties

Phorate is a highly toxic, colorless to yellowish liquid with an intense odor, is practically insoluble in water.

Use

Phorate is used as an insecticide and nematicide. It acts by inhibiting acetylcholinesterase. It has been approved in the USA in 1959 and marketed, inter alia, from the American Cyanamid. The production rights were sold by BASF at American Vanguard 2005.

The EC Commission adopted phorate 2002 not included in Annex I to Directive 91/414/EEC, therefore, the substance may be included in the EU countries not in pesticides. In Germany, Austria and Switzerland, no plant protection products containing this active ingredient are allowed.