Potasan

Structural formula
General
Surname	Potasan
other names	O , O -Diethyl- O- (4-methylcoumarin-7-yl) thiophosphate; O - (4-Methyl-2-oxo-2 H -1-benzopyran-7-yl) -thiophosphoric acid diethyl ester; E 838; Diethyl methyl coumarinyl thiophosphate;
Molecular formula	C 14 H 17 O 5 PS
Brief description	Solid
External identifiers / databases
ECHA InfoCard	100.149.168
PubChem	10496498
Wikidata	Q15632901
properties
Molar mass	328.33 g mol −1
Physical state	firmly
density	1.260 g cm −3 (38 ° C)
Melting point	39.5-41.3 ° C
boiling point	210 ° C (decomposition at 1.3 mBar)
solubility	poorly soluble in water
safety instructions
H and P phrases	H: 330-310-300-410
	P: ?
Toxicological data	14.7 mg kg −1 ( LD 50 , rat , oral ) ; 300 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 .

Potasan is a chemical compound from the group of substituted lactones and thiophosphoric acid esters . It is also known as "E 838", but not a food additive but an insecticide that also affects people's health.

properties

Potasan is a white solid that is sparingly soluble in water. It decomposes when heated above 210 ° C.

use

Potasan is a thiophosphoric acid ester insecticide from the coumarin series. The insecticide developed by Gerhard Schrader at Bayer in 1948 was used to combat Colorado beetles after the Second World War , but was later replaced by newer compounds.

There are no regulations for Potasan from the European Union. 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 on O, O-Diethyl-O- (4-methylcoumarin-7-yl) thiophosphate in the GESTIS substance database of the IFA , accessed on February 6, 2013(JavaScript required) .
↑ Entry on O, O-diethyl O- (4-methylcoumarin-7-yl) phosphorothioate 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 .
^ M. Bahadir, H. Parlar, Michael Spiteller: Springer Umweltlexikon . Springer, 2000, ISBN 978-3-540-63561-1 , pp. 923 ( limited preview in Google Book search).
^ Directorate-General for Health and Food Safety of the European Commission: EU pesticide database ; Entry in the national registers of plant protection products in Switzerland , Austria and Germany ; accessed on March 12, 2016.

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Entry on O, O-Diethyl-O- (4-methylcoumarin-7-yl) thiophosphate in the GESTIS substance database of the IFA , accessed on February 6, 2013(JavaScript required) .

[CLP_100.149.168-2] Entry on O, O-diethyl O- (4-methylcoumarin-7-yl) phosphorothioate 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 .

[Springer-3] M. Bahadir, H. Parlar, Michael Spiteller: Springer Umweltlexikon . Springer, 2000, ISBN 978-3-540-63561-1 , pp. 923 ( limited preview in Google Book search).

[PSM-4] Directorate-General for Health and Food Safety of the European Commission: EU pesticide database ; Entry in the national registers of plant protection products in Switzerland , Austria and Germany ; accessed on March 12, 2016.