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Herbicides

Butachlor

Also known as Machette, Machete, Bilchlor

CAS 23184-66-9Formula C17H26ClNO2Molar mass 311.85 g/molEC 245-477-8
GHS signal word: Danger. Pictograms: Acute toxicity (severe), Harmful or irritant, Hazardous to the environment 30 suppliers listed
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Butachlor chemical structure, C17H26ClNO2, CAS 23184-66-9
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Amber liquid
Melting point
<-5
Boiling point
156 °C
Density
1.070 g/mL at 25 °C
Flash point
114 °C
HS code
292429
Category
Herbicides
Illustrative photo, sealed amber glass ampoules on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Butachlor?

Plain description, key identifiers and synonyms

Butachlor is an aromatic amide that is 2-choro-N-(2,6-diethylphenyl)acetamide in which the amide nitrogen has been replaced by a butoxymethyl group. It has a role as a herbicide, a xenobiotic and an environmental contaminant. It is a tertiary carboxamide, 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
N-(butoxymethyl)-2-chloro-N-(2,6-diethylphenyl)acetamide
CAS number
23184-66-9 CAS number cross-checked
EC number
245-477-8
Molecular formula
C17H26ClNO2
UNII
94NU90OO5K
MDL number
MFCD00072426
InChIKey
HKPHPIREJKHECO-UHFFFAOYSA-N
InChI
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
SMILES (canonical and isomeric)
CCCCOCN(C1=C(C=CC=C1CC)CC)C(=O)CCl

Synonyms

  • Machette
  • Machete
  • Bilchlor
  • N-(Butoxymethyl)-2-chloro-N-(2,6-diethylphenyl)acetamide
  • Butaclor
  • Hiltachlor
  • Butanex
  • Delchlor 5G
  • Rasayanchlor
  • Delchlor
  • Machete (herbicide)
  • Amichlor
  • Pillarsete
  • Weedout
  • Mach-Mach
  • 2-Chloro-2',6'-diethyl-N-(butoxymethyl)acetanilide
  • CP 53619
  • 2',6'-Diethyl-N-butoxymethyl-2-chloroacetanilide
  • SHA 112301
  • Aimchlor
  • 2',6'-Diethyl-N-butoxymethyl-alpha-chloroacetanilide
  • N-Butoxymethyl-alpha-chloro-2',6'-diethylacetanilide
  • Acetamide, N-(butoxymethyl)-2-chloro-N-(2,6-diethylphenyl)-
  • Butachlor (>90%)
  • N-(Butoxymethyl)-2-chloro-2',6'-diethylacetanilide
Show all 33 synonyms
  • Butachlor solution
  • Acetanilide, N-(butoxymethyl)-2-chloro-2',6'-diethyl-
  • Acetanilide, 2-chloro-2',6'-diethyl-N-(butoxymethyl)-
  • Acetanilide,6'-diethyl-
  • Butachlor, analytical standard
  • Hkphpirejkheco-uhfffaoysa-
  • Butachlor 10 |Ig/mL in Cyclohexane
  • Butachlor 10 microg/mL in Cyclohexane

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
Amber liquidexp.
Odour
Faint, sweet odorexp.
Melting point
<-5exp.
Boiling point
156 °Cexp.
Density
1.070 g/mL at 25 °Cexp.
Flash point
114 °Cexp.
Solubility
In water, 20 mg/l at 20 °Cexp.
Vapour pressure
2.90 × 10⁻⁶ mm Hg at 25 °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
311.85 g/molcalc.
Exact mass
311.1652 Dacalc.
LogP (octanol/water)
4.16calc.
Topological polar surface area
29.54 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
9calc.
Heavy atoms
21calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.59calc.
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
Danger
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS07: Harmful or irritant
Harmful or irritant
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H302Harmful if swallowed.
  • H317May cause an allergic skin reaction.
  • H331Toxic if inhaled.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (19)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • 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.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P316Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • 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

Butachlor suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 30 suppliers
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Where suppliers are based

30 suppliers in 6 countries

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Butachlor 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

Selective herbicide.

Preemergence control of most annual grasses, certain broadleaf weeds in seeded and transplanted rice grown in certain Asian, South American, European and African countries.

Used in 1980 in Arkansas and in 1981 in Arkansas, Mississippi and Texas as a postemergence application with propanil under provisions of Section 18 of FIFRA as amended.

Pharmacological actions

  • Carcinogens
  • Herbicides

Roles

  • environmental contaminant
  • herbicide
  • pesticide
  • xenobiotic

How it is made

Butachlor is produced by reaction of chloroacetyl chloride with the azomethine of 2,6-diethylaniline and formaldehyde, followed by treatment with n-butanol.

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Butachlor 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 Butachlor is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Butachlor?

Butachlor is an aromatic amide that is 2-choro-N-(2,6-diethylphenyl)acetamide in which the amide nitrogen has been replaced by a butoxymethyl group. It has a role as a herbicide, a xenobiotic and an environmental contaminant. It is a tertiary carboxamide, an organochlorine compound and an aromatic amide.

What is the CAS number of Butachlor?

The CAS registry number of Butachlor is 23184-66-9.

What is the molecular formula and weight of Butachlor?

The molecular formula of Butachlor is C17H26ClNO2 and its molar mass is 311.85 g/mol.

What is Butachlor used for?

Selective herbicide. Preemergence control of most annual grasses, certain broadleaf weeds in seeded and transplanted rice grown in certain Asian, South American, European and African countries.

Is Butachlor hazardous?

Butachlor carries the GHS signal word "Danger". Main hazards: harmful if swallowed, may cause an allergic skin reaction, toxic if inhaled. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Butachlor?

Butachlor 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 Butachlor?

CompoundList lists 30 suppliers of Butachlor in China, India, Iran, Germany and 2 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Butachlor in India?

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

What is the price of Butachlor?

Suppliers quote Butachlor 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

Practical guides that help when you source, ship or handle Butachlor

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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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