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IUPAC name 2-Chloro-N-(ethoxymethyl)-N-(2-ethyl-6-methylphenyl)acetamide
Other names Azetochlor
CAS number 34256-82-1
PubChem 1988
Molecular formula C14H20ClNO2
Molar mass 269.767 g/mol
Density 1.100 at 30 °C
1.136 at 20 °C
Melting point

<0 °C

Solubility in water 223 ppm
23 mg/L
Flash point >100 °C
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references



Acetochlor is an herbicide developed by Monsanto and Zeneca. It is a member of the class of herbicides known as chloroacetanilides. Its mode of action is elongase inhibition, and inhibition of geranylgeranyl pyrophosphate (GGPP) cyclisation enzymes, part of the gibberellin pathway.


It is marketed as an emulsifiable concentrate containing 36.7% of active ingredient. It is homologuated for pre-emergence application or for pre-planting application with soil incorporation, in corn (maize) at 5 litres / hectare (183.5g / hectare of a.i.)[2] and includes the trade names Acenit, Guardian, Harness, Relay, Sacemid, Surpass, Top-Hand, Trophy and Winner.

It is used to control weeds in corn, and is particularly useful as a replacement for atrazine in the case of some important weeds.


Acetochlor has been classified as a probable human carcinogen;[1] the conditions of registration ensure that acetochlor will pose a negligible risk to human health and the environment.[3]

See also


  1. ^ a b Cornell University Extension Toxicology Network Pesticide Information Profile on Acetochlor
  2. ^
  3. ^
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Acetochlor". A list of authors is available in Wikipedia.
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