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2,4-Dichlorophenol

Also known as 4,6-Dichlorophenol, Phenol, 2,4-dichloro-, 2,4-DCP

CAS 120-83-2Formula C6H4Cl2OMolar mass 163.00 g/molEC 204-429-6
GHS signal word: Danger. Pictograms: Corrosive, Acute toxicity (severe), Hazardous to the environment 56 suppliers listed
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2,4-Dichlorophenol chemical structure, C6H4Cl2O, CAS 120-83-2
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless crystals or needles
Melting point
45 °C
Boiling point
210 °C
Density
1.4 g/cm³
Flash point
93.3 °C
HS code
290819
Category
Herbicides
UN number
UN 2020
Illustrative photo, colourless crystals beside an amber glass bottle on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is 2,4-Dichlorophenol?

Plain description, key identifiers and synonyms

2,4-dichlorophenol is a dichlorophenol that is phenol carrying chloro substituents at positions 2 and 4.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2,4-dichlorophenol
CAS number
120-83-2 CAS number cross-checked
EC number
204-429-6
Molecular formula
C6H4Cl2O
UNII
R669TG1950
MDL number
MFCD00002169
InChIKey
HFZWRUODUSTPEG-UHFFFAOYSA-N
InChI
InChI=1S/C6H4Cl2O/c7-4-1-2-6(9)5(8)3-4/h1-3,9H
SMILES (canonical and isomeric)
C1=CC(=C(C=C1Cl)Cl)O

Synonyms

  • 4,6-Dichlorophenol
  • Phenol, 2,4-dichloro-
  • 2,4-DCP
  • 2,4-dichloro-Phenol
  • 1-Hydroxy-2,4-dichlorobenzene
  • 2,4-Dichlorohydroxybenzene
  • 1,3-Dichloro-4-hydroxybenzene
  • 2,4-Dichlorophenic acid
  • RCRA waste number U081
  • Phen-3,5-d2-ol-d, 2,4-dichloro- (9CI)
  • 2,4-Dichlorophenol 100 microg/mL in Methanol
  • RCRA waste no. U081
  • 2,4-Dichlorphenol
  • 2,4-Dichlorophenate
  • 2,4,-dichlorophenol
  • 2,4-dichloro phenol
  • 24-Dichlorophenol
  • 2,4-dichlorophenol-cp std
  • 2,4-Dichlorophenol, 99%
  • 4-06-00-00885 (Beilstein Handbook Reference)
  • 2,4-D TP1
  • 2,4-Dichlorophenol 10 microg/mL in Methanol
  • 2,4-Dichlorophenol, purum, >=97.0% (HPLC)
  • 2,4-Dichlorophenol Solution in Methanol, 100ug/mL
  • 2,4-Dichlorophenol Solution in Methanol, 1000ug/mL
Show all 28 synonyms
  • 2,4-Dichlorophenol, PESTANAL(R), analytical standard
  • 2,4-Dichlorophenol, certified reference material, TraceCERT(R)
  • 2,4-Dichlorophenol, United States Pharmacopeia (USP) Reference Standard

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
Colorless crystals or needlesexp.
Odour
Strong medicinalexp.
Melting point
45 °Cexp.
Boiling point
210 °Cexp.
Density
1.4 g/cm³exp.
Flash point
93.3 °Cexp.
Autoignition temperature
500 °Cexp.
Solubility
In water, 4.50 × 10⁺³ mg/L at 20 °Cexp.
Vapour pressure
0.09 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
163.00 g/molcalc.
Exact mass
161.9639 Dacalc.
LogP (octanol/water)
2.7calc.
Topological polar surface area
20.23 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
9calc.
Rings
1calc.
Aromatic rings
1calc.
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, 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
GHS05: Corrosive
Corrosive
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS09: Hazardous to the environment
Hazardous to the environment
100NFPA 704 rating

Hazard statements

  • H302Harmful if swallowed.
  • H311Toxic in contact with skin.
  • H314Causes severe skin burns and eye damage.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (20)
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P262Do not get in eyes, on skin, or on clothing.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P352If on skin: Wash with plenty of water.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P316Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P361 + P364Take off immediately all contaminated clothing. And wash it before reuse.
  • P363Wash contaminated clothing before reuse.
  • P391Collect spillage.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 2020
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

2,4-Dichlorophenol suppliers

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All 56 suppliers
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Where suppliers are based

56 suppliers in 11 countries

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2,4-Dichlorophenol price

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Uses and applications

What the substance is used for, by industry and function

In synthesis of antihelminthic bithionol sulfoxide.

2,4-DCP is used as a feedstock for the manufacture of ... certain methyl cmpd used in mothproofing, antiseptics & seed disinfectants. 2,4-DCP is also reacted with benzene sulfonyl chloride to produce miticide or further chlorinated to pentachlorophenol, a wood preservative.

Biocide, intermediate in production of herbicides.

Organic synthesis.

Industrial uses: Intermediate.

Use classes: Pesticide transformation products.

Pharmacological actions

  • Anthelmintics

How it is made

Industrially by chlorination of phenol with chlorine gas in a melt in cast-iron reactors. The isomer distribution in the product may be adjusted to market demands by the chlorination level and by recycling various intermediates. The yield, based on chlorine and phenol, is greater than 95%. (Mono-, Di-, and Trichlorophenols with No Chlorine in a Meta Position)

Synthesis of 2,4-dichlorophenol ... through the chlorination of the monochlorophenols.

Preparation by chlorination of phenol, ... by chlorination of o-chlorophenol or p-chlorophenol, ... from 2,4-dinitrophenol.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 604-011-00-7

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 2,4-Dichlorophenol is traded under.

HS 2908.19Indicative HS code

Derivatives containing only halogen substituents and their salts, other

World exports in 2024
$452M
−8.2% vs 2023, imports $435M
2019 to 2024
Top exporters
  1. Jordan * partner reported36.5%
  2. Israel29.6%
  3. China6.5%
Top importers
  1. China58.6%
  2. South Korea10.3%
  3. United States5.5%

* Partner reported figures, a lower bound.

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

The HS code shown for 2,4-Dichlorophenol is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 2,4-Dichlorophenol, based on the data on this page

What is 2,4-Dichlorophenol?

2,4-dichlorophenol is a dichlorophenol that is phenol carrying chloro substituents at positions 2 and 4.

What is the CAS number of 2,4-Dichlorophenol?

The CAS registry number of 2,4-Dichlorophenol is 120-83-2.

What is the molecular formula and weight of 2,4-Dichlorophenol?

The molecular formula of 2,4-Dichlorophenol is C6H4Cl2O and its molar mass is 163.00 g/mol.

What is 2,4-Dichlorophenol used for?

In synthesis of antihelminthic bithionol sulfoxide. 2,4-DCP is used as a feedstock for the manufacture of ... certain methyl cmpd used in mothproofing, antiseptics & seed disinfectants.

Is 2,4-Dichlorophenol hazardous?

2,4-Dichlorophenol carries the GHS signal word "Danger". Main hazards: harmful if swallowed, toxic in contact with skin, causes severe skin burns and eye damage. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 2,4-Dichlorophenol?

2,4-Dichlorophenol is usually classified under HS code 290819 (Derivatives containing only halogen substituents and their salts, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 2,4-Dichlorophenol?

CompoundList lists 56 suppliers of 2,4-Dichlorophenol in China, United States, India, United Kingdom 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 2,4-Dichlorophenol in India?

5 suppliers in India list 2,4-Dichlorophenol on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of 2,4-Dichlorophenol?

Suppliers quote 2,4-Dichlorophenol 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 2,4-Dichlorophenol

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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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