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Fungicides

Chloranil

Also known as p-Chloranil, Tetrachloro-1,4-benzoquinone, Tetrachloro-p-benzoquinone

CAS 118-75-2Formula C6Cl4O2Molar mass 245.88 g/molEC 204-274-4
GHS signal word: Warning. Pictograms: Harmful or irritant, Hazardous to the environment 66 suppliers listed
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Chloranil chemical structure, C6Cl4O2, CAS 118-75-2
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Golden-yellow platelets from acetic acid or acetone, monoclinic prisms from benzene or t…
Melting point
292 °C
Boiling point
SUBLIMES AT BOILING POINT
Density
Relative density (water = 1): 2.0
Solubility
ALMOST INSOL IN COLD PETROLEUM ETHER, COLD ALCOHOL, SPARINGLY SOL IN CHLOROFORM, CARBON…
HS code
291479
Category
Fungicides
Illustrative photo, yellow pigment powder in an open fibre drum in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Chloranil?

Plain description, key identifiers and synonyms

Tetrachloro-1,4-benzoquinone is a member of the class of 1,4-benzoquiones that is 1,4-benzoquinone in which all four hydrogens are substituted by chlorines. It has a role as a metabolite and an EC 2.7.1.33 (pantothenate kinase) inhibitor. It is a member of 1,4-benzoquinones and an organochlorine compound.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2,3,5,6-tetrachlorocyclohexa-2,5-diene-1,4-dione
CAS number
118-75-2 CAS number cross-checked
EC number
204-274-4
Molecular formula
C6Cl4O2
UNII
01W5X7N5XV
MDL number
MFCD00001594
InChIKey
UGNWTBMOAKPKBL-UHFFFAOYSA-N
InChI
InChI=1S/C6Cl4O2/c7-1-2(8)6(12)4(10)3(9)5(1)11
SMILES (canonical and isomeric)
C1(=C(C(=O)C(=C(C1=O)Cl)Cl)Cl)Cl

Synonyms

  • p-Chloranil
  • Tetrachloro-1,4-benzoquinone
  • Tetrachloro-p-benzoquinone
  • Spergon
  • Vulklor
  • Tetrachlorobenzoquinone
  • Reranil
  • Tetrachloroquinone
  • Coversan
  • 2,3,5,6-Tetrachloro-1,4-benzoquinone
  • Spergon technical
  • Tetrachloro-p-quinone
  • Khloranil
  • Psorisan
  • Spergon I
  • Tetrachloroparabenzoquinone
  • Chloranile
  • Geigy-444E
  • Quinone tetrachloride
  • 2,3,5,6-Tetrachloro-p-benzoquinone
  • 2,3,5,6-Tetrachloro-2,5-cyclohexadiene-1,4-dione
  • Dow Seed Disinfectant No. 5
  • 2,5-Cyclohexadiene-1,4-dione, 2,3,5,6-tetrachloro-
  • alpha-Chloranil
  • 2,3,5,6-Tetrachloroquinone
Show all 37 synonyms
  • ENT 3,797
  • 2,3,5,6-Tetrachlorobenzoquinone
  • p-Benzoquinone, 2,3,5,6-tetrachloro-
  • 1,4-Benzoquinone, 2,3,5,6-tetrachloro-
  • ENT 3797
  • TCBQ compound
  • Tetrachloro 1,4 benzoquinone
  • 2,3,5,6-tetrachlorocyclohexa-2,5-diene-1,4-dione
  • 2,3,5,6-Tetrachlorobenzo-1,4-quinone
  • 4-Chloranil
  • tetrachlorocyclohexa-2,5-diene-1,4-dione
  • 3,4,5,6-Tetrachloro-p-benzoquinone

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
Golden-yellow platelets from acetic acid or acetone, monoclinic prisms from benzene or toluene or by sublimation inexp.
Melting point
292 °Cexp.
Boiling point
SUBLIMES AT BOILING POINTexp.
Density
Relative density (water = 1): 2.0exp.
Solubility
ALMOST INSOL IN COLD PETROLEUM ETHER, COLD ALCOHOL, SPARINGLY SOL IN CHLOROFORM, CARBON DISULFIDE, CARBON TETRACHLORIDE, SOLUBLE IN ETHER. INSOLUBLE IN WATER.exp.
Vapour pressure
5.1 × 10⁻⁶ MM HG @ 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
245.88 g/molcalc.
Exact mass
243.8652 Dacalc.
LogP (octanol/water)
2.52calc.
Topological polar surface area
34.14 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
12calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
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, O=C1C=CC(=O)C=C1

O=C1C=CC(=O)C=C1

1 ring, 8 atoms, the Quinone ring system.

738 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
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (12)
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P391Collect spillage.
  • 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

Chloranil suppliers

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

All 66 suppliers
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Where suppliers are based

66 suppliers in 11 countries

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Chloranil 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

In manufacture of chloranil electrodes for ph measurements, to manufacture cmpd used in dye industry, as reagent for pamaquine (plasmochin) in urine (blue color). Fungicide.

As oxidizing agent.

On moist eczemas of dogs & in flea powders.

Fungicide in seed treatment, foliar application.

Industrial uses: Intermediate.

Pharmacological actions

  • Fungicides, Industrial

Roles

  • enzyme inhibitor
  • metabolite

How it is made

Reaction of cyclohexane and hydrogen chloride mixed with oxygen, passed over an oxidation catalyst

From para-phenylenediamine or phenol by treating with potassium chlorate & hcl. Because of its great resistance to further oxidn, chloranil is formed as final product of chlorate-hcl oxidn of many aromatic cmpd. For comprehensive list see huntress, organic chlorine cmpd. Lab procedure starting with phenol or para-chlorophenol.

(A) by oxidn of trichlorophenol with chromic acid. (B) by treating phenol with hydrochloric acid & potassium chlorate. Tetrachloroquinone is separated from trichloroquinone simultaneously produced by water solubility of latter.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 602-066-00-1

United States

  • TSCA inventory (USA)
    Status: Active in US commerce, Regulatory flags: Section 4 test rule or order

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

Frequently asked questions

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

What is Chloranil?

Tetrachloro-1,4-benzoquinone is a member of the class of 1,4-benzoquiones that is 1,4-benzoquinone in which all four hydrogens are substituted by chlorines. It has a role as a metabolite and an EC 2.7.1.33 (pantothenate kinase) inhibitor. It is a member of 1,4-benzoquinones and an organochlorine compound.

What is the CAS number of Chloranil?

The CAS registry number of Chloranil is 118-75-2.

What is the molecular formula and weight of Chloranil?

The molecular formula of Chloranil is C6Cl4O2 and its molar mass is 245.88 g/mol.

What is Chloranil used for?

In manufacture of chloranil electrodes for ph measurements, to manufacture cmpd used in dye industry, as reagent for pamaquine (plasmochin) in urine (blue color). Fungicide. As oxidizing agent. On moist eczemas of dogs & in flea powders. Fungicide in seed treatment, foliar application. Industrial uses: Intermediate.

Is Chloranil hazardous?

Chloranil carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, very toxic to aquatic life. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Chloranil?

Chloranil 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 Chloranil?

CompoundList lists 66 suppliers of Chloranil in China, India, United States, Germany and 7 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Chloranil in India?

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

What is the price of Chloranil?

Suppliers quote Chloranil 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 Chloranil

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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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