Hymexazole
Structural formula | ||||||||||||||||
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General | ||||||||||||||||
Surname | Hymexazole | |||||||||||||||
other names |
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Molecular formula | C 4 H 5 NO 2 | |||||||||||||||
Brief description |
colorless and odorless crystals |
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External identifiers / databases | ||||||||||||||||
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properties | ||||||||||||||||
Molar mass | 99.09 g mol −1 | |||||||||||||||
Physical state |
firmly |
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density |
0.551 g cm −3 |
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Melting point |
86 ° C |
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boiling point |
200-204 ° C |
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solubility |
soluble in water (85 g l −1 at 25 ° C) |
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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 . |
Hymexazol is a chemical compound from the group of isoxazoles and one of Sankyo developed and early 1970s introduced fungicide .
Extraction and presentation
Hymexazole can be obtained by reacting diketene and hydroxylamine and then ring closure with hydrogen chloride .
use
Hymexazole is used as a systemic soil fungicide and dressing agent in rice, vegetable and sugar beet cultivation.
Admission
Plant protection products with hymexazole as an active ingredient (trade name Tachigaren ) are approved in Germany, Austria and Switzerland.
Individual evidence
- ↑ a b c d e Entry on Hymexazole. In: Römpp Online . Georg Thieme Verlag, accessed on December 17, 2014.
- ↑ a b c d Entry on 3-hydroxy-5-methylisoxazole in the GESTIS substance database of the IFA , accessed on February 9, 2017(JavaScript required) .
- ↑ Entry on 3-hydroxy-5-methylisoxazole 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 .
- ↑ a b Thomas A. Unger: Pesticide Synthesis Handbook . William Andrew, 1996, ISBN 0-8155-1853-6 , pp. 465 ( limited preview in Google Book search).
- ↑ General Directorate Health and Food Safety of the European Commission: Entry on Hymexazole in the EU pesticide database; Entry in the national registers of plant protection products in Switzerland , Austria and Germany ; accessed on February 14, 2016.