Tetrasul

Structural formula
General
Surname	Tetrasul
other names	2,4,4 ', 5-tetrachlorodiphenyl sulfide
Molecular formula	C 12 H 6 Cl 4 S
Brief description	white solid
External identifiers / databases
EC number	218-761-4
ECHA InfoCard	100.017.057
PubChem	16685
ChemSpider	15822
DrugBank	DB12838
Wikidata	Q15632887
properties
Molar mass	324.06 g mol −1
Physical state	firmly
Melting point	85-89 ° C
boiling point	200 ° C (1.29 hPa)
solubility	practically insoluble in water
safety instructions
GHS labeling of hazardous substances Caution
H and P phrases	H: 312-412
	P: 273-280
Toxicological data	3,960 mg kg −1 ( LD 50 , rat , oral ) ; 2,000 mg kg −1 ( LD 50 , rabbit , transdermal ) ;
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Tetrasul is a chemical compound from the group of thioethers and diphenyls .

Extraction and presentation

Tetrasul can be produced by etherification of 2,4,5-trichlorothiophenol with p -chloronitrobenzene and sodium hydroxide in a Williamson ether synthesis , subsequent reduction with iron , reaction with nitrous acid and copper (I) chloride in a Sandmeyer reaction .

properties

Tetrasul is a white solid that is practically insoluble in water.

use

Tetrasul was used as an acaricide on cucumbers and tomatoes.

Admission

In the European Union, Tetrasul was not included in Annex I of Directive 91/414 / EEC with Regulation (EC) No. 2076/2002 of November 20, 2002. For this reason, no plant protection products containing Tetrasul may be approved in the EU countries.

In Germany, Austria and Switzerland, no pesticides with this active ingredient are permitted.

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Entry for CAS no. 2227-13-6 in the GESTIS substance database of the IFA , accessed on March 26, 2013(JavaScript required) .
↑ Thomas A. Unger: Pesticide synthesis handbook . 1996, ISBN 978-0-8155-1401-5 , pp. 832 ( limited preview in Google Book search).
^ M. Bahadir, H. Parlar, Michael Spiteller: Springer Umweltlexikon . Springer, 2000, ISBN 978-3-540-63561-1 , pp. 1162 ( limited preview in Google Book search).
↑ Regulation (EC) No. 2076/2002 (PDF) of the Commission of November 20, 2002.
↑ General Directorate Health and Food Safety of the European Commission: Entry on Tetrasul in the EU pesticide database; Entry in the national registers of plant protection products in Switzerland , Austria and Germany ; accessed on February 23, 2016.

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Entry for CAS no. 2227-13-6 in the GESTIS substance database of the IFA , accessed on March 26, 2013(JavaScript required) .

[Unger-2] Thomas A. Unger: Pesticide synthesis handbook . 1996, ISBN 978-0-8155-1401-5 , pp. 832 ( limited preview in Google Book search).

[Springer-3] M. Bahadir, H. Parlar, Michael Spiteller: Springer Umweltlexikon . Springer, 2000, ISBN 978-3-540-63561-1 , pp. 1162 ( limited preview in Google Book search).

[4] Regulation (EC) No. 2076/2002 (PDF) of the Commission of November 20, 2002.

[PSM-5] General Directorate Health and Food Safety of the European Commission: Entry on Tetrasul in the EU pesticide database; Entry in the national registers of plant protection products in Switzerland , Austria and Germany ; accessed on February 23, 2016.