Chlorfenson

Structural formula
General
Surname	Chlorfenson
other names	4-chlorophenyl-4-chlorobenzene sulfonate; 4-chlorobenzenesulfonic acid 4-chlorophenyl ester; OVEX ( INCI ) ;
Molecular formula	C 12 H 8 Cl 2 O 3 S
Brief description	colorless crystals
External identifiers / databases
EC number	201-270-4
ECHA InfoCard	100.001.156
PubChem	6635
ChemSpider	6383
DrugBank	DB05377
Wikidata	Q2964122
properties
Molar mass	303.17 g mol −1
Physical state	firmly
Melting point	86.5 ° C
boiling point	decomposes
solubility	practically insoluble in water
safety instructions
H and P phrases	H: 302-315-410
	P: 273-501
Toxicological data	2000 mg kg −1 ( LD 50 , rat , oral ) ; > 10000 mg kg −1 ( LD 50 , rat , transdermal ) ;
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Chlorfenson is a chemical compound from the group of sulfonates and an acaricide .

Extraction and presentation

Chlorfenson can be obtained by reacting chlorobenzene with chlorosulfonic acid and p -chlorophenol .

use

Chlorfenson is used as an ovicide against summer eggs and larvae of spider mites . It had the trade names Ovex , Orotran and Sappiran and is no longer commercially available today.

Admission

No plant protection products containing this active ingredient are permitted in the EU or Switzerland .

Individual evidence

↑ Entry on OVEX in the CosIng database of the EU Commission, accessed on May 22, 2020.
↑ ^a ^b ^c ^d ^e ^f ^g ^h Entry on Chlorfenson in the GESTIS substance database of the IFA , accessed on February 1, 2016(JavaScript required) .
↑ Entry on Chlorfenson in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on August 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .
↑ Thomas A. Unger: Pesticide Synthesis Handbook . William Andrew, 1996, ISBN 0-8155-1853-6 , pp. 989 ( limited preview in Google Book Search).
↑ General Directorate Health and Food Safety of the European Commission: Entry on Chlorfenson (aka chlorfenizon) in the EU pesticide database ; Entry in the national registers of plant protection products in Switzerland , Austria and Germany ; accessed on March 26, 2016.

[CosIng-1] Entry on OVEX in the CosIng database of the EU Commission, accessed on May 22, 2020.

[GESTIS-2] ↑ ^a ^b ^c ^d ^e ^f ^g ^h Entry on Chlorfenson in the GESTIS substance database of the IFA , accessed on February 1, 2016(JavaScript required) .

[CLP_100.001.156-3] Entry on Chlorfenson in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on August 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .

[unger-4] Thomas A. Unger: Pesticide Synthesis Handbook . William Andrew, 1996, ISBN 0-8155-1853-6 , pp. 989 ( limited preview in Google Book Search).

[5] General Directorate Health and Food Safety of the European Commission: Entry on Chlorfenson (aka chlorfenizon) in the EU pesticide database ; Entry in the national registers of plant protection products in Switzerland , Austria and Germany ; accessed on March 26, 2016.