Butachlor

Last updated
Butachlor
Butachlor structure.svg
Names
Preferred IUPAC name
N-(Butoxymethyl)-2-chloro-N-(2,6-diethylphenyl)acetamide
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.041.328 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 245-477-8
KEGG
PubChem CID
UNII
  • 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
  • ClCC(=O)N(c1c(cccc1CC)CC)COCCCC
Properties [1]
C17H26ClNO2
Molar mass 311.85 g·mol−1
AppearanceLight yellow oil
Density 1.0695 g/cm3
20 mg/L (20 °C)
Hazards
GHS labelling:
GHS-pictogram-skull.svg GHS-pictogram-exclam.svg GHS-pictogram-pollu.svg
Danger
H302, H317, H331, H410
P261, P264, P270, P271, P272, P273, P280, P301+P312, P302+P352, P304+P340, P311, P321, P330, P333+P313, P363, P391, P403+P233, P405, P501
Flash point 100 °C (212 °F; 373 K) [2]
Lethal dose or concentration (LD, LC):
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).

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]

Contents

Butachlor's herbicide mode of action is to prevent formation of very long chain fatty acids; this makes its HRAC classification group J (Australia), K3 (global) and 15 (numeric). [4]

Application

Butachlor is typically applied at 1.25–2 kg/ha active ingredient. [5]

References

  1. 1 2 3 Merck Index , 11th Edition, 1498
  2. ↑ Butachlor at Sigma-Aldrich
  3. ↑ PPDB , retrieved 2019-10-03.
  4. 1 2 PPDB, retrieved 1-2025-March
  5. 1 2 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
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