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Impurities and reference standards

2-Chlorophenol

Also known as o-Chlorophenol, Phenol, 2-chloro-, 2-Hydroxychlorobenzene

CAS 95-57-8Formula C6H5ClOMolar mass 128.56 g/molEC 202-433-2
GHS signal word: Warning. Pictograms: Harmful or irritant, Hazardous to the environment 46 suppliers listed
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2-Chlorophenol chemical structure, C6H5ClO, CAS 95-57-8
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Light amber liquid
Melting point
9.8 °C
Boiling point
174.9 °C
Density
Relative density (water = 1): 1.3
Flash point
64 °C
HS code
290819
Category
Impurities and reference standards
UN number
UN 2021
Illustrative photo, amber viscous liquid in laboratory glassware on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is 2-Chlorophenol?

Plain description, key identifiers and synonyms

2-chlorophenol is a monochlorophenol and a 2-halophenol.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-chlorophenol
CAS number
95-57-8 CAS number cross-checkedOther or deprecated CAS: 25167-80-0
EC numbers
202-433-2, 246-691-4
Molecular formula
C6H5ClO
UNII
K9KAV4K6BN
MDL number
MFCD00002159
InChIKey
ISPYQTSUDJAMAB-UHFFFAOYSA-N
InChI
InChI=1S/C6H5ClO/c7-5-3-1-2-4-6(5)8/h1-4,8H
SMILES (canonical and isomeric)
C1=CC=C(C(=C1)O)Cl

Synonyms

  • o-Chlorophenol
  • Phenol, 2-chloro-
  • 2-Hydroxychlorobenzene
  • o-Chlorphenol
  • 2-Chloro-1-hydroxybenzene
  • o-Chlorophenic acid
  • Phenol, o-chloro-
  • Septi-Kleen
  • Pine-O Disinfectant
  • ortho-chlorophenol
  • 1-Chloro-2-hydroxybenzene
  • o-monochlorophenol
  • 2-monochlorophenol
  • ortho-monochlorophenol
  • Chlorophenol
  • RCRA waste number U048
  • 2-chloro-phenol
  • 2-Chlorophenol, >=99%
  • RCRA waste no. U048
  • orthochlorophenol
  • 2-chloro phenol
  • 1wbo
  • o-Chlorophenol, solid
  • o-Chlorophenol, liquid
  • Triclosan Impurity 24
Show all 34 synonyms
  • Phenol,2-chloro
  • 2-Chlorophenol, 98%
  • 2-Chlorophenol (2-CP)
  • 2-Chlorophenol 10 microg/mL in Methanol
  • 2-Chlorophenol 100 microg/mL in Methanol
  • 2-Chlorophenol, SAJ first grade, >=99.0%
  • 2-Chlorophenol Solution in Methanol, 1000_g/mL
  • 2-Chlorophenol, PESTANAL(R), analytical standard
  • o-Chlorophenol, solid [UN2020] [Keep away from food]

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
Light amber liquidexp.
Odour
Unpleasant penetrating odorexp.
Taste
Strong medicinal taste and odorexp.
Melting point
9.8 °Cexp.
Boiling point
174.9 °Cexp.
Density
Relative density (water = 1): 1.3exp.
Flash point
64 °Cexp.
Solubility
2.85 PARTS SOL IN 100 PARTS WATER @ 20 °Cexp.
Vapour pressure
2.53 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
128.56 g/molcalc.
Exact mass
128.0029 Dacalc.
LogP (octanol/water)
2.05calc.
Topological polar surface area
20.23 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
8calc.
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
Warning
GHS07: Harmful or irritant
Harmful or irritant
GHS09: Hazardous to the environment
Hazardous to the environment
220NFPA 704 rating

Hazard statements

  • H302Harmful if swallowed.
  • H312Harmful in contact with skin.
  • H332Harmful if inhaled.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (15)
  • 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.
  • 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.
  • P317Get medical help.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P391Collect spillage.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 2021
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-Chlorophenol suppliers

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

All 46 suppliers
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Where suppliers are based

46 suppliers in 10 countries

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2-Chlorophenol 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

At one time, chlorophenol-treatment was widely used in agriculture, to prevent wood decay in buildings, food containers, and horticultural timbers. Recently, such chlorophenol applications have been considerably restricted in some countries, and as a result, the quantities of non-PCP chlorophenols used in agriculture are minor. (chlorophenols).

Biocide, disinfectant for home, hospital, and farm (Former).

Organic synthesis (dyes).

How it is made

From diazotized o-chloroaniline, from phenol, cis-trans equilibria in o-halophenols.

O-Chlorocumenes are oxidized to peroxides and then hydrated to produce o-chlorophenol.

O-Chlorophenol is produced in 22% yields from the reaction of chlorine monoxide with phenol in carbon tetrachloride.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 604-008-00-0[4]

United States

  • TSCA inventory (USA)
    Status: Active in US commerce, Regulatory flags: Proposed section 4 test rule

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code 2-Chlorophenol 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-Chlorophenol is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is 2-Chlorophenol?

2-chlorophenol is a monochlorophenol and a 2-halophenol.

What is the CAS number of 2-Chlorophenol?

The CAS registry number of 2-Chlorophenol is 95-57-8. Other or deprecated CAS numbers: 25167-80-0.

What is the molecular formula and weight of 2-Chlorophenol?

The molecular formula of 2-Chlorophenol is C6H5ClO and its molar mass is 128.56 g/mol.

What is 2-Chlorophenol used for?

At one time, chlorophenol-treatment was widely used in agriculture, to prevent wood decay in buildings, food containers, and horticultural timbers.

Is 2-Chlorophenol hazardous?

2-Chlorophenol carries the GHS signal word "Warning". Main hazards: harmful if swallowed, harmful in contact with skin, harmful if inhaled. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 2-Chlorophenol?

2-Chlorophenol 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-Chlorophenol?

CompoundList lists 46 suppliers of 2-Chlorophenol in China, United States, India, Canada and 6 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-Chlorophenol in India?

3 suppliers in India list 2-Chlorophenol 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-Chlorophenol?

Suppliers quote 2-Chlorophenol 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-Chlorophenol

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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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