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185787

Sigma-Aldrich

4-Chlorophenol

≥99%

Synonym(s):

4-Chlorophenol, 4-Hydroxychlorobenzene, p-Chlorophenic acid, p-Chlorophenol

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About This Item

Linear Formula:
ClC6H4OH
CAS Number:
106-48-9
Molecular Weight:
128.56
Beilstein:
507004
EC Number:
203-402-6
MDL number:
MFCD00002318
UNSPSC Code:
12352100
PubChem Substance ID:
24851180
NACRES:
NA.22
form:
solid
Assay:
≥99%

vapor pressure

1 mmHg ( 49.8 °C)

Quality Level

200

Assay

≥99%

form

solid

impurities

<1.0% Phenol

bp

220 °C (lit.)

mp

42-45 °C

solubility

ethanol: soluble 50 mg/mL, clear to very slightly hazy, colorless to faintly brownish-yellow

density

1.306 g/mL at 25 °C (lit.)

functional group

chloro

SMILES string

Oc1ccc(Cl)cc1

InChI

1S/C6H5ClO/c7-5-1-3-6(8)4-2-5/h1-4,8H

InChI key

WXNZTHHGJRFXKQ-UHFFFAOYSA-N

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General description

4-Chlorophenol undergoes dechlorination to phenol rapidly on palladized graphite electrodes. Mechanism of 4-chlorophenol oxidation has been investigated by radiolytic and photocatalytic techniques.

Application

4-Chlorophenol was used:
  • As a substrate in the visible-light-induced degradation studies of phenolic compounds in an aqueous suspension of pure TiO2.
  • As a model chlorinated organic pollutant in the hydrodechlorination studies of phenols using palladium nanocrystal catalysts.
  • To prepare 4-chlorocatechol, hydroquinone, and benzoquinone via photo mineralization using Degussa P25 TiO2.

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Aquatic Chronic 2 - Eye Dam. 1 - Skin Corr. 1B

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 2

Flash Point(F)

249.8 °F - closed cup

Flash Point(C)

121 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

PRTR

Class I Designated Chemical Substances

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

185787-5G:4548173929606
185787-VAR:
185787-100G:4548173929583
185787-BULK:
185787-500G:4548173929590

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Certificates of Analysis (COA)

Lot/Batch Number
MKCV9627
MKCR2309
MKCG4994
WXBC2551V
WXBC1582V

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Radiolytic and TiO2-assisted photocatalytic degradation of 4-chlorophenol. A comparative study.
Stafford U, et al.
The Journal of Physical Chemistry, 98(25), 6343-6351 (1994)
Soonhyun Kim et al.
The journal of physical chemistry. B, 109(11), 5143-5149 (2006-07-26)
The visible-light-induced degradation reaction of 4-chlorophenol (4-CP) was investigated in aqueous suspension of pure TiO2. Contrary to common expectations, 4-CP could be degraded under visible illumination (lambda > 420 nm), generating chlorides and CO2 concomitantly. The observed visible reactivity was
Photomineralisation of 4-chlorophenol sensitised by TiO2 thin films
Mills A and Wang J
Journal of Photochemistry and Photobiology A: Chemistry, 118, 53-63 (1998)
Aqueous-phase hydrodechlorination of 4-chlorophenol on palladium nanocrystals: Identifying the catalytic sites and unraveling the reaction mechanism
Ding X, et al.
J. Catal., 368, 336-344 (2018)
Visible-light-induced photocatalytic degradation of 4-chlorophenol and phenolic compounds in aqueous suspension of pure titania: demonstrating the existence of a surface-complex-mediated path
Kim S and Choi W
The Journal of Physical Chemistry B, 109, 5143-5149 (2005)
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