EPN (insecticide)

EPN

Yellow solid with an aromatic odor

Fixed

1.27 g · cm -3

36 ° C.

215 ° C ( 6.5 mbar)

• Practically insoluble in water
• Soluble in organic solvents

Risk

7 mg · kg -1 ( LD50, rat, oral)

Template: Infobox chemical / molecular formula search available

O- ethyl O -(4- nitrophenyl) phenylthiophosphonat (short EPN) is an active ingredient for plant protection and an organic chemical compound from the group of Thiophosphoric.

Production and representation

O-ethyl O-( 4-nitrophenyl) phenylthiophosphonat can be obtained starting from chlorobenzene by a multistage reaction. It is reacted in the presence of aluminum chloride with phosphorus trichloride to Phenylthiophosphonyldichlorid and this with sodium ethoxide and the sodium salt of p -nitrophenol to the EPN.

Properties

EPN is a flammable yellow solid with an aromatic odor, which is practically insoluble in water.

Use

The 1948 put on the market EPN is a highly toxic insecticide that is also toxic to warm-blooded animals.

The drug was never approved in the European Union. In Switzerland, in Austria and in Germany no pesticides are allowed, containing EPN as an active ingredient.