Thiophosphoryl chloride

• Of phosphorus
• Thiophosphorylchloride
• Phosphorothioic

Volatile, colorless liquid with a pungent odor

Liquid

1.67 g · cm -3

-40.8 ° C ( alpha- form) -36.2 ° C ( beta form )

125 ° C

16 hPa ( 20 ° C)

• Decomposes in water
• Soluble in many organic solvents such as benzene and chloroform

Risk

Template: Infobox chemical / molecular formula search available

Thiophosphoryltrichlorid is an inorganic chemical compound consisting of the group of the phosphorus halides and sulfur compounds.

Production and representation

Thiophosphoryltrichlorid can be represented by different reactions from phosphorus trichloride. The most common practical synthesis, which is used in industrial production, is the reaction of phosphorus trichloride with an excess of sulfur at 180 ° C.

Alternatively, the preparation by the reaction of phosphorus pentasulfide, and phosphorus pentachloride, with a yield of about 70% is possible.

Properties

Thiophosphoryltrichlorid is a volatile, colorless liquid with a pungent odor. It is chemically unstable at elevated temperatures and slowly hydrolyses in water to form ortho-phosphoric acid, hydrochloric acid and hydrogen sulphide.

Use

Thiophosphoryltrichlorid is used for making organic thiophosphorus compounds (such as for example insecticides parathion ) and thioamides used.

Safety

Thiophosphoryltrichlorid ignite or explode when heated in air.