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2,3,4-Trichlorophenol

Also known as Phenol, 2,3,4-trichloro-, 2,3,4-TCP, Trichlorophenol

CAS 15950-66-0Formula C6H3Cl3OMolar mass 197.45 g/molEC 240-083-2
GHS signal word: Danger. Pictograms: Corrosive, Harmful or irritant 2 suppliers listed
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2,3,4-Trichlorophenol chemical structure, C6H3Cl3O, CAS 15950-66-0
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Solid crystals or flakes
Melting point
57 °C
Boiling point
252 °C
Density
1.5 g/cm³
Flash point
62 °C
HS code
290819
Category
Fungicides
UN number
UN 2020
Illustrative photo, a shrink wrapped pallet of kraft paper sacks in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is 2,3,4-Trichlorophenol?

Plain description, key identifiers and synonyms

2,3,4-trichlorophenol appears as needles (from benzene and ligroin) or light peach solid. (NTP, 1992)

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2,3,4-trichlorophenol
CAS number
15950-66-0 CAS number cross-checkedOther or deprecated CAS: 25167-82-2, 609-19-8, 933-75-5, 933-78-8
EC numbers
240-083-2, 246-694-0
Molecular formula
C6H3Cl3O
UNII
8JWE1AV71F
MDL number
MFCD00002161
InChIKey
HSQFVBWFPBKHEB-UHFFFAOYSA-N
InChI
InChI=1S/C6H3Cl3O/c7-3-1-2-4(10)6(9)5(3)8/h1-2,10H
SMILES (canonical and isomeric)
C1=CC(=C(C(=C1O)Cl)Cl)Cl

Synonyms

  • Phenol, 2,3,4-trichloro-
  • 2,3,4-TCP
  • Trichlorophenol
  • Phenol, trichloro-
  • 2,3,4-Trichlorophenol 100 microg/mL in Methanol
  • Phenol, 2,3,4-trichloro-, 2,3,4-Trichlorophenol
  • Trichlorophenol, 2,3,4-
  • 2,3,4-Trichlorophenol, analytical standard
  • 2,3,4-Trichlorophenol 10 microg/mL in Cyclohexane
  • 2,3,4-Trichlorophenol, PESTANAL(R), analytical 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
Solid crystals or flakesexp.
Odour
Strong disinfectant odorexp.
Melting point
57 °Cexp.
Boiling point
252 °Cexp.
Density
1.5 g/cm³exp.
Flash point
62 °Cexp.
Autoignition temperature
Not flammableexp.
Solubility
Solubility in water: noneexp.

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
197.45 g/molcalc.
Exact mass
195.9249 Dacalc.
LogP (octanol/water)
3.35calc.
Topological polar surface area
20.23 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
10calc.
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
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H302Harmful if swallowed.
  • H315Causes skin irritation.
  • H318Causes serious eye damage.
  • H335May cause respiratory irritation.
Precautionary statements (19)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • 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.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P317Get medical help.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • 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

2,3,4-Trichlorophenol suppliers

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All 2 suppliers

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Where suppliers are based

2 suppliers in 1 country

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2,3,4-Trichlorophenol 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

Fungicide and bactericide.

Chlorinated phenols are used as intermediates in the synthesis of dyes, pigments, and phenolic resins. Certain chlorophenols also are used directly as flea repellents, ... mold inhibitors, antiseptics, disinfectants, and antigumming agents for gasoline. (Chlorinated phenols).

How it is made

Prepared by direct chlorination or the hydrolysis of the higher chlorinated derivatives of benzene. (Trichlorophenols)

Regulatory status

Inventories, regulations and trade controls that list this substance

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 2,3,4-Trichlorophenol 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 2,3,4-Trichlorophenol is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 2,3,4-Trichlorophenol, based on the data on this page

What is 2,3,4-Trichlorophenol?

2,3,4-trichlorophenol appears as needles (from benzene and ligroin) or light peach solid. (NTP, 1992)

What is the CAS number of 2,3,4-Trichlorophenol?

The CAS registry number of 2,3,4-Trichlorophenol is 15950-66-0. Other or deprecated CAS numbers: 25167-82-2, 609-19-8, 933-75-5.

What is the molecular formula and weight of 2,3,4-Trichlorophenol?

The molecular formula of 2,3,4-Trichlorophenol is C6H3Cl3O and its molar mass is 197.45 g/mol.

What is 2,3,4-Trichlorophenol used for?

Fungicide and bactericide. Chlorinated phenols are used as intermediates in the synthesis of dyes, pigments, and phenolic resins. Certain chlorophenols also are used directly as flea repellents, ... mold inhibitors, antiseptics, disinfectants, and antigumming agents for gasoline. (Chlorinated phenols).

Is 2,3,4-Trichlorophenol hazardous?

2,3,4-Trichlorophenol carries the GHS signal word "Danger". Main hazards: harmful if swallowed, causes skin irritation, causes serious eye damage. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 2,3,4-Trichlorophenol?

2,3,4-Trichlorophenol 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 2,3,4-Trichlorophenol?

CompoundList lists 2 suppliers of 2,3,4-Trichlorophenol in United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of 2,3,4-Trichlorophenol?

Suppliers quote 2,3,4-Trichlorophenol 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 2,3,4-Trichlorophenol

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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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