Butachlor
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| Names | |
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| Preferred IUPAC name
N-(Butoxymethyl)-2-chloro-N-(2,6-diethylphenyl)acetamide | |
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3D model (JSmol)
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PubChem CID
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| Properties[1] | |
| C17H26ClNO2 | |
| Molar mass | 311.85 g·mol−1 |
| Appearance | Light yellow oil |
| Density | 1.0695 g/cm3 |
| 20 mg/L (20 °C) | |
| Hazards | |
| Flash point | 100 °C (212 °F; 373 K)[2] |
| Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
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1740 mg/kg (oral, rat)[1] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Butachlor is a herbicide of the acetanilide class.[3] It is used as a selective pre-emergent herbicide[1] to control annual grasses and some broad-leaved weeds. It was introduced circa 1970.[4] It is extensively used in India in the form of granules and emulsifiable concentrate in rice as post emergence herbicide, and 2,699 tonnes (5,950,000 lb) was sold in India in 2005-06, declining to 372 tonnes (820,000 lb) in 2009-10.[5]
Butachlor's herbicide mode of action is to prevent formation of very long chain fatty acids; this makes its HRAC classification Group K (Australia), Group K3 (global) and Group 15 (numeric).
Application
Butachlor is typically applied at 1.25-2 kg/ha active ingredient.[5]
References
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- ^ a b c Merck Index, 11th Edition, 1498
- ^ Butachlor at Sigma-Aldrich
- ^ Page Module:Citation/CS1/styles.css has no content.PPDB, retrieved 2019-10-03.
- ^ PPDB, retrieved 1-2025-March
- ^ a b Choudhury PP, Singh R, Ghosh D and Sharma AR. 2016. Herbicide Use in Indian Agriculture. ICAR - Directorate of Weed Research, Jabalpur, Madhya Pradesh, 110 p. https://dwr.icar.gov.in/Downloads/Information_Bulletin/Information%20Bulletin%20No%20-%2022%20-%20Herbicide%20Use%20in%20Indian%20Agriculture.pdf
- ^ Page Module:Citation/CS1/styles.css has no content."Register of Agricultural Chemicals Registered" (PDF). Republic of Uganda Ministry of Agriculture Animal Industry and Fisheries. 16 December 2022. Retrieved 3 March 2026.
Links
- Butachlor in the Pesticide Properties DataBase (PPDB)
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