{{Chembox | ImageFile = butachlor structure.svg | ImageSize = | PIN = ''N''-(Butoxymethyl)-2-chloro-''N''-(2,6-diethylphenyl)acetamide | OtherNames = |Section1={{Chembox Identifiers | CASNo = 23184-66-9 | CASNo_Ref = {{cascite|correct|CAS}} | PubChem = 31677 | ChEMBL = 1399036 | ChEBI_Ref = {{ebicite|correct|EBI}} | ChEBI = 3230 | ChemSpiderID = 29376 | EINECS = 245-477-8 | KEGG = C10931 | UNII = 94NU90OO5K | SMILES = ClCC(=O)N(c1c(cccc1CC)CC)COCCCC | InChI =1S/C17H26ClNO2/c1-4-7-11-21-13-19(16(20)12-18)17-14(5-2)9-8-10-15(17)6-3/h8-10H,4-7,11-13H2,1-3H3 }} |Section2={{Chembox Properties | Properties_ref = <ref name=Merck>''Merck Index'', 11th Edition, '''1498'''</ref> | C=17 | H=26 | Cl=1 | N=1 | O=2 | Appearance = Light yellow oil | Density = 1.0695 g/cm<sup>3</sup> | MeltingPt = | BoilingPt = | Solubility = 20 mg/L (20 °C) }} |Section3={{Chembox Hazards | MainHazards = | FlashPtC = 100 | FlashPt_ref = <ref name=SA>[http://www.sigmaaldrich.com/catalog/ProductDetail.do?N4=37887|sial&N5=SEARCH_CONCAT_PNO|BRAND_KEY&F=SPEC Butachlor] at Sigma-Aldrich</ref> | AutoignitionPt = | GHSPictograms = {{GHS06}}{{GHS07}}{{GHS09}} | GHSSignalWord = Danger | HPhrases = {{H-phrases|302|317|331|410}} | PPhrases = {{P-phrases|261|264|270|271|272|273|280|301+312|302+352|304+340|311|321|330|333+313|363|391|403+233|405|501}} | LD50 = 1740 mg/kg (oral, rat)<ref name=Merck/> }} }} {{confuse|butenachlor}}
'''Butachlor''' is a herbicide of the acetanilide class.<ref>{{citation | url = https://sitem.herts.ac.uk/aeru/ppdb/en/Reports/101.htm | title = PPDB| access-date = 2019-10-03}}.</ref> It is used as a selective pre-emergent herbicide<ref name=Merck/> to control annual grasses and some broad-leaved weeds. It was introduced circa 1970.<ref name = "ppdb">[https://sitem.herts.ac.uk/aeru/ppdb/en/Reports/101.htm PPDB], retrieved 1-2025-March</ref> It is extensively used in India in the form of granules and emulsifiable concentrate in rice as post emergence herbicide, and {{convert|2699|t|lb}} was sold in India in 2005-06, declining to {{convert|372|t|lb}} in 2009-10.<ref name = "bulletin 22">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</ref>
It is used in Uganda.<ref>{{cite web |title=Register of Agricultural Chemicals Registered |url=https://www.agriculture.go.ug/wp-content/uploads/2023/01/Chemical-Register-Dec-2022.pdf |publisher=Republic of Uganda Ministry of Agriculture Animal Industry and Fisheries |access-date=3 March 2026 |date=16 December 2022}}</ref>
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.<ref name = "bulletin 22"/>
==References== {{reflist}}
==Links== *{{PPDB|101}}
{{herbicides}} {{Aniline Herbicides}}
Category:Herbicides Category:Acetanilides Category:Butyl compounds Category:Group 15 herbicides Category:Anilide herbicides
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