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Herbicides

Acetochlor

Also known as 2-Chloro-N-(ethoxymethyl)-N-(2-ethyl-6-methylphenyl)acetamide, Azetochlor, Acetochlore

CAS 34256-82-1Formula C14H20ClNO2Molar mass 269.77 g/molEC 251-899-3
GHS signal word: Warning. Pictograms: Harmful or irritant, Serious health hazard, Hazardous to the environment 41 suppliers listed
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Acetochlor chemical structure, C14H20ClNO2, CAS 34256-82-1
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Clear, viscous liquid
Melting point
10.6 °C
Boiling point
172 °C
Density
1.136 g/mL at 20 °C, 1.107 g/mL at 25 °C, 1.1 g/mL at 30 °C
Flash point
>93
HS code
292429
Category
Herbicides
Illustrative photo, clear liquid in sealed glass ampoules on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Acetochlor?

Plain description, key identifiers and synonyms

Acetochlor is a monocarboxylic acid amide that is N-phenylacetamide carrying an ethyl and a methyl group at positions 2 and 6 respectively on the benzene ring while one of the methyl hydrogens as well as the hydrogen attached to the nitrogen atom have been replaced by a chloro and an ethoxymethyl group respectively. It has a role as a herbicide, a xenobiotic and an environmental contaminant. It is a monocarboxylic acid amide, an organochlorine compound and an aromatic amide. It is functionally related to a N-phenylacetamide.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-chloro-N-(ethoxymethyl)-N-(2-ethyl-6-methylphenyl)acetamide
CAS number
34256-82-1 CAS number cross-checkedOther or deprecated CAS: 123113-74-6
EC number
251-899-3
Molecular formula
C14H20ClNO2
UNII
8L08WMO94K
MDL number
MFCD00143534
InChIKey
VTNQPKFIQCLBDU-UHFFFAOYSA-N
InChI
InChI=1S/C14H20ClNO2/c1-4-12-8-6-7-11(3)14(12)16(10-18-5-2)13(17)9-15/h6-8H,4-5,9-10H2,1-3H3
SMILES (canonical and isomeric)
CCC1=CC=CC(=C1N(COCC)C(=O)CCl)C

Synonyms

  • 2-Chloro-N-(ethoxymethyl)-N-(2-ethyl-6-methylphenyl)acetamide
  • Azetochlor
  • Acetochlore
  • Harness
  • Acenit
  • Erunit
  • Nevirex
  • Acetamide, 2-chloro-N-(ethoxymethyl)-N-(2-ethyl-6-methylphenyl)-
  • MON 097
  • MG 02
  • 2-Chloro-2'-methyl-6-ethyl-N-ethoxymethylacetanilide
  • 2-Chloro-N-(ethoxymethyl)-6'-ethyl-o-acetotoluidide
  • 2-Chloro-N-(ethoxymethyl)-6'-ethylacet-o-toluidide
  • Acetochlor standard solution
  • Acetochlore [ISO-French]
  • Acetochlo
  • o-Acetotoluidide, 2-chloro-N-(ethoxymethyl)-6'-ethyl-
  • 2-chloro-n-ethoxymethyl-6'-ethylacet-o-toluidide
  • DivK1c_006722
  • Acetochlor Solution in Methanol
  • Acetochlor 100 microg/mL in Cyclohexane
  • Acetochlor 100 microg/mL in Acetonitrile
  • Acetochlor, PESTANAL(R), analytical standard
  • 2-chloro-2'-ethyl-6'-methyl-N-(ethoxymethyl)acetanilide
  • 2-chloro-2'-ethyl-6'-methyl-N-(ethoxymethyl) acetanilide
Show all 28 synonyms
  • N-(ethoxymethyl)-2-chloro-N-(2-ethyl,6-methylphenyl)acetamide
  • 2-chloro-n-(ethoxymethyl)-n-(2-ethyl-6-methyl-phenyl)acetamide
  • 2-Chloro-N-(ethoxymethyl)-N-(2-ethyl-6-methylphenyl)acetamide #

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
Clear, viscous liquidexp.
Odour
Aromatic odorexp.
Melting point
10.6 °Cexp.
Boiling point
172 °Cexp.
Density
1.136 g/mL at 20 °C, 1.107 g/mL at 25 °C, 1.1 g/mL at 30 °Cexp.
Flash point
>93exp.
Solubility
In water, 233 mg/L at 25 °Cexp.
Vapour pressure
2.2 × 10⁻² mPa /1.67 × 10⁻⁷ mm Hg/ at 20 °Cexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
269.77 g/molcalc.
Exact mass
269.1183 Dacalc.
LogP (octanol/water)
3.12calc.
Topological polar surface area
29.54 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
6calc.
Heavy atoms
18calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.5calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccccc1

c1ccccc1

1 ring, 6 atoms, the Benzene ring system.

485,677 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H315Causes skin irritation.
  • H317May cause an allergic skin reaction.
  • H332Harmful if inhaled.
  • H335May cause respiratory irritation.
  • H351Suspected of causing cancer.
  • H361fSuspected of damaging fertility.
  • H373May cause damage to organs through prolonged or repeated exposure.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (21)
  • P203Obtain, read and follow all safety instructions before use.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P271Use only outdoors or in a well-ventilated area.
  • P272Contaminated work clothing should not be allowed out of the workplace.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P317Get medical help.
  • P318If exposed or concerned, get medical advice.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P333 + P317If skin irritation or rash occurs: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P391Collect spillage.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Acetochlor suppliers

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All 41 suppliers
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Where suppliers are based

41 suppliers in 8 countries

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Acetochlor price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Herbicide.

Used pre-emergence or pre-plant to control annual grasses, certain broadleaf weeds and yellow nutsedge (Cyperus esculentus) in maize, peanuts, soy beans, cotton, potatoes and sugar cane.

/Acetochlor/ is absorbed by the shoots (less so by the roots) of germinating plants and inhibits protein synthesis in susceptible plants.

Pharmacological actions

  • Herbicides

Roles

  • environmental contaminant
  • herbicide
  • pesticide
  • xenobiotic

Functional uses

  • Biocide

How it is made

Acetochlor is produced by reaction of chloroacetyl chloride with the azomethine of 2-ethyl-6-methylaniline and formaldehyde, followed by treatment with ethanol.

Ethoxy methylation of the appropriate acetanilide.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 616-037-00-6

Health and food

  • EU Cosmetics Regulation Annex II, prohibited in cosmetics
    Name: Acetochlor (ISO), 2- chloro-N-(ethoxymethyl)-N-(2-ethyl-6- methylphenyl)acetamide, Ref no: 1631, Annex ref: II/1631

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Acetochlor is traded under.

HS 2924.29Indicative HS code

Cyclic amides (including cyclic carbamates) and their derivatives, salts thereof, other

World exports in 2024
$5.69B
−5.1% vs 2023, imports $5.8B
2019 to 2024
Top exporters
  1. China32.3%
  2. Switzerland * partner reported13.6%
  3. Norway * partner reported12.8%
Top importers
  1. United States15.9%
  2. Ireland15.8%
  3. Germany11.9%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Acetochlor is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Acetochlor, based on the data on this page

What is Acetochlor?

Acetochlor is a monocarboxylic acid amide that is N-phenylacetamide carrying an ethyl and a methyl group at positions 2 and 6 respectively on the benzene ring while one of the methyl hydrogens as well as the hydrogen attached to the nitrogen atom have been replaced by a chloro and an ethoxymethyl group respectively.

What is the CAS number of Acetochlor?

The CAS registry number of Acetochlor is 34256-82-1. Other or deprecated CAS numbers: 123113-74-6.

What is the molecular formula and weight of Acetochlor?

The molecular formula of Acetochlor is C14H20ClNO2 and its molar mass is 269.77 g/mol.

What is Acetochlor used for?

Herbicide. Used pre-emergence or pre-plant to control annual grasses, certain broadleaf weeds and yellow nutsedge (Cyperus esculentus) in maize, peanuts, soy beans, cotton, potatoes and sugar cane.

Is Acetochlor hazardous?

Acetochlor carries the GHS signal word "Warning". Main hazards: causes skin irritation, may cause an allergic skin reaction, harmful if inhaled. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Acetochlor?

Acetochlor is usually classified under HS code 292429 (Cyclic amides (including cyclic carbamates) and their derivatives, salts thereof, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Acetochlor?

CompoundList lists 41 suppliers of Acetochlor in China, United States, India, Brazil and 4 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Acetochlor in India?

3 suppliers in India list Acetochlor on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Acetochlor?

Suppliers quote Acetochlor on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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