Metobromuron

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Structural formula
Structural formula of metobromuron
General
Surname Metobromuron
other names
  • N ′ - (4-bromophenyl) - N -methoxy- N -methylurea
  • Monobromuron
  • Patoran
  • Pattonex
  • Praxim
Molecular formula C 9 H 11 BrN 2 O 2
Brief description

colorless crystals

External identifiers / databases
CAS number 3060-89-7
EC number 221-301-5
ECHA InfoCard 100.019.365
PubChem 18290
Wikidata Q18213352
properties
Molar mass 259.10 g mol −1
Physical state

firmly

density

1.6 g cm −3

Melting point

95-96 ° C

solubility
  • practically insoluble in water
  • Easily soluble in acetone, chloroform and ethanol
safety instructions
GHS labeling of hazardous substances
07 - Warning

Caution

H and P phrases H: 302-319-332
P: 305 + 351 + 338
Toxicological data
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Metobromuron is a chemical compound from the group of phenylureas , which was introduced by Ciba in 1963 as a herbicide .

Extraction and presentation

Metobromuron can be obtained from p -bromaniline and phosgene . Their product reacts further with N , O -dimethylhydroxylamine to form the end product.

use

Metobromuron is used as a pre-emergence herbicide in potato, tobacco, tomato, French bean, lamb's lettuce, soybean and sunflower cultivation.

Admission

The last approval for metobromuron in Germany expired in 2004. In 2014 the active ingredient was approved again by the European Commission.

In a number of EU countries, including Austria, Germany and Switzerland, plant protection products containing this active ingredient are approved.

Individual evidence

  1. ↑ Belchim strengthens their Potato portfolio with new herbicide , February 26, 2015
  2. ↑ a b c d e Crop Protection Handbook 2014 . 100th edition. MeisterPro, Willoughby, Ohio 2014, pp. 416 .
  3. ↑ a b c d Entry on N ′ - (4-bromophenyl) -N-methoxy-N-methylurea in the GESTIS substance database of the IFA , accessed on February 13, 2017(JavaScript required) .
  4. ↑ a b entry on metobromuron. In: Römpp Online . Georg Thieme Verlag, accessed on October 9, 2014.
  5. ↑ Thomas A. Unger: Pesticide Synthesis Handbook . William Andrew, 1996, ISBN 0-8155-1853-6 , pp. 249 ( limited preview in Google Book search).
  6. ↑ Regulation (EU) No. 890/2014 (PDF) of August 14, 2014 on the approval of the active ingredient metobromuron
  7. ↑ General Directorate Health and Food Safety of the European Commission: Entry on metobromuron in the EU pesticide database; Entry in the national registers of plant protection products in Switzerland , Austria and Germany ; accessed on December 6, 2019.