Mefenpyr-diethyl

Structural formula
General
Surname	Mefenpyr-diethyl
other names	Diethyl 1- (2,4-dichlorophenyl) -5-methyl-2-pyrazoline-3,5-dicarboxylate; Diethyl 1- (2,4-dichlorophenyl) -4,5-dihydro-5-methyl-1 H -pyrazole-3,5-dicarboxylate;
Molecular formula	C 16 H 18 Cl 2 N 2 O 4
Brief description	white to light yellow crystalline solid
External identifiers / databases
EC number	603-923-2
ECHA InfoCard	100.123.441
PubChem	10937610
ChemSpider	9112846
Wikidata	Q1916946
properties
Molar mass	373.3 g mol −1
Physical state	firmly
density	1.31 g cm −3
Melting point	50-52 ° C
solubility	almost insoluble in water (20 mg l −1 at 20 ° C)
safety instructions
GHS labeling of hazardous substances	no GHS pictograms
	no GHS pictograms
H and P phrases	H: no H-phrases
	P: no P-phrases
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Mefenpyr-diethyl is an organic chemical compound that is used as a herbicidal safener in grain cultivation. It is a product from Bayer CropScience and is used as an ingredient in a wide variety of brands in conjunction with one or more herbicides. The substance is approved in Austria and Switzerland.

safety instructions

The substance is harmful to the environment. In the USA several were NOAEL - ( N o O bserved A dverse e ffect L evel) and LOAEL values ( L owest O bserved A dverse e ffect L evel) determined for different mammals. Furthermore, maximum tolerable limit values have been set for important edible commodities , agricultural crops such as wheat or barley , livestock such as domestic cattle or sheep :

Merchandise	Limit value in ppm
Barley, grains	0.05
Wheat, grains	0.05
Feed wheat	0.2
Domestic cattle	0.1
Sheep	0.1
source

Web links

Mefenpyr diethyl; Pesticide Tolerance (Environmental Protection Agency)

Individual evidence

↑ ^a ^b ^c data sheet from Bayer CropScience
↑ Entry on Mefenpyr-diethyl in the ChemIDplus database of the United States National Library of Medicine (NLM) .
↑ ^a ^b data sheet Mefenpyr-diethyl, PESTANAL at Sigma-Aldrich , accessed on November 1, 2016 ( PDF ).
↑ Cultivated plants or weeds: safeners know the difference! - Bayer CropSience
↑ Safener technology: reliable protection of crops from herbicides - Bayer CropSience
↑ Entry in the national registers of plant protection products in Switzerland and Austria ; accessed on March 12, 2016.
↑ ^a ^b Pesticide Management Education Program (PMEP): Federal Register : Rules and Regulations (PDF; 72 kB) Vol. 68, No. 83, April 30, 2003

[bayercropscience-1] ta sheet from Bayer CropScience

[chemid-2] Entry on Mefenpyr-diethyl in the ChemIDplus database of the United States National Library of Medicine (NLM) .

[Sigma-3] ta sheet Mefenpyr-diethyl, PESTANAL at Sigma-Aldrich , accessed on November 1, 2016 ( PDF ).

[4] Cultivated plants or weeds: safeners know the difference! - Bayer CropSience

[5] Safener technology: reliable protection of crops from herbicides - Bayer CropSience

[PSM-6] Entry in the national registers of plant protection products in Switzerland and Austria ; accessed on March 12, 2016.

[pmep-7] Pesticide Management Education Program (PMEP): Federal Register : Rules and Regulations (PDF; 72 kB) Vol. 68, No. 83, April 30, 2003