Chemistry:Butenachlor
Butenachlor is an obsolete selective chloroacetanilide, chloroacetamide herbicide used to control grasses and broadleaf weeds.[1][2] It was introduced in 1976 and marketed as "Diphenox",[3] by Agro-Kanesho.[4]
It is stable in acidic, neutral or weakly alkaline conditions; it is unstable in sublight.[5]
Butenachlor is applied at 0.75-1.0 kg/Ha, and usually sold as a pesticide formulation as granules (GR).[5]
Environmental behaviour
Butenachlor does not persist in soil; its soil half-life is 2 to 5 days. It is moderately toxic to fish, with a 96-hour LC50 of 0.48 mg/L (0.034 gr/imp. gal).[3][5]
Safety
Butenachlor's acute oral LD50 on rats is 1630 mg/kg (male rats) and 1875 mg/kg (female rates). In mice, it is much less harmful, with an LD50 about 6300 mg/kg. It is slightly irritating to skin and eyes. The inhalatory LC50 for rats is 3.34 mg/L of air over 4 hours. A 90 day NOEL is 25 mg/kg/day for dogs. Butenachlor is non-teratogenic, and has no evident reproductive effects.[5]
References
- ↑ "Butenachlor | Product Data Sheet | MedChemExpress". https://www.medchemexpress.com/butenachlor.html?srsltid=AfmBOoqN_4RXVXO-owMxcgbreKqhQ3O5XqrhhWFNMMDGTcCne0Z30Q3c.
- ↑ Rivard, Linda (2003) "Environmental Fate of Metolachlor", Environmental Monitoring Branch, Department of Pesticide Regulation, Sacramento, California, retrieved 5 February 2026
- ↑ 3.0 3.1 Lewis, K.A., Tzilivakis, J., Warner, D. and Green, A. (2016) An international database for pesticide risk assessments and management. Human and Ecological Risk Assessment: An International Journal, 22(4), 1050-1064. DOI: 10.1080/10807039.2015.1133242
- ↑ "List of Herbicides Globally". https://www.weedscience.org/summary/Herbicide.aspx?MOAID=18.
- ↑ 5.0 5.1 5.2 5.3 Macbean, C. (2012). A World Compendium The Pesticide Manual (16th ed.). Hampshire, UK: British Crop Protection Council. p. 68. ISBN 978 1 901396 86 7.
External links
- Butenachlor in the Pesticide Properties DataBase (PPDB)
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