Dimethachlor
Structural formula | ||||||||||||||||
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1: 1 mixture of both atropisomers | ||||||||||||||||
General | ||||||||||||||||
Surname | Dimethachlor | |||||||||||||||
other names |
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Molecular formula | C 13 H 18 ClNO 2 | |||||||||||||||
Brief description |
colorless and odorless, crystalline powder |
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External identifiers / databases | ||||||||||||||||
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properties | ||||||||||||||||
Molar mass | 255.74 g mol −1 | |||||||||||||||
Physical state |
firmly |
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density |
1.23 g cm −3 |
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Melting point |
46.3 ° C |
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boiling point |
decomposes above 320 ° C |
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Vapor pressure |
0.64 mPa (25 ° C) |
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solubility |
practically insoluble in water |
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safety instructions | ||||||||||||||||
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Toxicological data | ||||||||||||||||
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Dimethachlor is a 1: 1 mixture of two atropisomeric chemical compounds from the group of chloroacetanilides, as well as alachlor and metolachlor . The selective pre-emergence herbicide works by inhibiting fatty acid synthesis and was launched in 1977.
Extraction and presentation
Dimethachlor can be produced by reacting 2,6-dimethylaniline and methoxyacetaldehyde , followed by hydrogenation and reaction with chloroacetic acid chloride .
Admission
In a number of EU countries, including Germany and Austria, as well as Switzerland, plant protection products with the active ingredient dimethachlor are approved, such as B. Brasan.
literature
- Substance data sheet dimethachlor from the LAWA expert group "Substances".
Individual evidence
- ↑ a b c d e f g Entry on dimethachlor in the GESTIS substance database of the IFA , accessed on February 10, 2017(JavaScript required) .
- ↑ a b c d Entry on dimethachlor in the Pesticide Properties DataBase (PPDB) of the University of Hertfordshire , accessed on February 16, 2014.
- ↑ Entry on 2-chloro-N- (2,6-dimethylphenyl) -N- (2-methoxyethyl) acetamide in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on August 1, 2016. Manufacturers or distributors can use the expand harmonized classification and labeling .
- ↑ Thomas A. Unger: Pesticide Synthesis Handbook . William Andrew, 1996, ISBN 0-8155-1853-6 , pp. 21 ( limited preview in Google Book search).
- ^ Directorate-General for Health and Food Safety of the European Commission: Entry on dimethachlor in the EU pesticide database; Entry in the national registers of plant protection products in Switzerland , Austria and Germany ; accessed on February 17, 2016.