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Aldehydes and ketones

Hexachloroacetone

Also known as Hexachloropropanone, Hexachloro-2-propanone, Perchloroacetone

CAS 116-16-5Formula C3Cl6OMolar mass 264.75 g/molEC 204-129-5
GHS signal word: Warning. Pictograms: Harmful or irritant, Hazardous to the environment 11 suppliers listed
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Hexachloroacetone chemical structure, C3Cl6O, CAS 116-16-5
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Very light yellow liquid
Melting point
-2 °C
Boiling point
202 to 204
Density
1.444 AT 12 °C/12 °C
Solubility
Slightly sol in water, sol in acetone
HS code
291479
Category
Aldehydes and ketones
UN number
UN 2661
Illustrative photo, pale yellow liquid in sealed glass ampoules on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Hexachloroacetone?

Plain description, key identifiers and synonyms

Hexachloroacetone is a ketone.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1,1,1,3,3,3-hexachloropropan-2-one
CAS number
116-16-5 CAS number cross-checked
EC number
204-129-5
Molecular formula
C3Cl6O
UNII
RU0LGU279Y
MDL number
MFCD00000796
InChIKey
DOJXGHGHTWFZHK-UHFFFAOYSA-N
InChI
InChI=1S/C3Cl6O/c4-2(5,6)1(10)3(7,8)9
SMILES (canonical and isomeric)
C(=O)(C(Cl)(Cl)Cl)C(Cl)(Cl)Cl

Synonyms

  • Hexachloropropanone
  • Hexachloro-2-propanone
  • Perchloroacetone
  • HCA weedkiller
  • Kureha HCA
  • Bis(trichloromethyl) ketone
  • Acetone, hexachloro-
  • 1,1,1,3,3,3-Hexachloro-2-propanone
  • 2-Propanone, hexachloro-
  • 2-Propanone, 1,1,1,3,3,3-hexachloro-
  • 1,1,1,3,3,3-Hexachloropropanone
  • Perchloro-2-propanone
  • hexachloropropan-2-one
  • HCA [Herbicide]
  • HCA (VAN)
  • 1,1,1,3,3,3-hexachloropropan-2-one
  • 1,1,1,3,3,3-Hexachloroacetone
  • Hexachloroacetone, pract
  • C3Cl6O
  • hexachloro acetone
  • hexachloro-acetone
  • HCA, WSSA
  • Hexachloro-2-propanone, 99%
  • 1,1,3,3,3-Hexachloropropanone
  • 1,1,1,3,3,3-Hexachloroacetone #
Show all 31 synonyms
  • 1,1,3,3,3-Hexachloro-2-propanone
  • UN 2661
  • 2-Propanone,1,1,3,3,3-hexachloro-
  • Hexachloroacetone Hexachloro-2-propanone
  • 1,1, 1,3,3,3-Hexachloro-2-propanone
  • Hexachloro-2-propanone, produced by Wacker Chemie AG, Burghausen, Germany, >=99.0% (GC)

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
Very light yellow liquidexp.
Odour
MUSTY ODORexp.
Melting point
-2 °Cexp.
Boiling point
202 to 204exp.
Density
1.444 AT 12 °C/12 °Cexp.
Solubility
Slightly sol in water, sol in acetoneexp.
Vapour pressure
0.376 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
264.75 g/molcalc.
Exact mass
261.808 Dacalc.
LogP (octanol/water)
3.3calc.
Topological polar surface area
17.07 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
10calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.67calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H302Harmful if swallowed.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (7)
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P273Avoid release to the environment.
  • P301 + P317If swallowed: Get medical help.
  • P330Rinse mouth.
  • P391Collect spillage.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 2661
Transport hazard class
6.1
Packing group
III

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

Hexachloroacetone suppliers

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

All 11 suppliers
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Where suppliers are based

11 suppliers in 4 countries

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Hexachloroacetone 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

Reagent for N-trichloroacetylation of dipeptides under neutral conditions.

Hexafluoroacetone is manufactured by the reaction of hexachloroacetone and hydrogen fluoride in the presence of a chromium catalyst.

Chloroform may be produced from acetone by intermediate production of hexachloroacetone.

Hexachloroacetone was once used as a weedkiller, but it is currently believed to be of little commercial interest.

Industrial uses: Intermediate.

How it is made

By direct chlorination of acetone.

Chlorination (of isopropyl alcohol) at 70-100 °C provides nearly complete conversion of lower chloroacetones into 1,1,1,3,3-pentachloroacetone and hexachloroacetone.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 606-032-00-7

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2914.79Indicative HS code

Halogenated, sulphonated, nitrated or nitrosated derivatives, other

World exports in 2024
$558M
−12.1% vs 2023, imports $608M
2019 to 2024
Top exporters
  1. China41.2%
  2. India * partner reported28.7%
  3. Germany16.7%
Top importers
  1. United States29.1%
  2. Italy9.9%
  3. Switzerland * partner reported8.8%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Hexachloroacetone?

Hexachloroacetone is a ketone.

What is the CAS number of Hexachloroacetone?

The CAS registry number of Hexachloroacetone is 116-16-5.

What is the molecular formula and weight of Hexachloroacetone?

The molecular formula of Hexachloroacetone is C3Cl6O and its molar mass is 264.75 g/mol.

What is Hexachloroacetone used for?

Reagent for N-trichloroacetylation of dipeptides under neutral conditions. Hexafluoroacetone is manufactured by the reaction of hexachloroacetone and hydrogen fluoride in the presence of a chromium catalyst. Chloroform may be produced from acetone by intermediate production of hexachloroacetone.

Is Hexachloroacetone hazardous?

Hexachloroacetone carries the GHS signal word "Warning". Main hazards: harmful if swallowed, toxic to aquatic life with long lasting effects. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Hexachloroacetone?

Hexachloroacetone is usually classified under HS code 291479 (Halogenated, sulphonated, nitrated or nitrosated derivatives, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Hexachloroacetone?

CompoundList lists 11 suppliers of Hexachloroacetone in India, United States, China and Germany. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Hexachloroacetone in India?

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

What is the price of Hexachloroacetone?

Suppliers quote Hexachloroacetone 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 Hexachloroacetone

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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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