Chlorobenzene

An aryl chloride that behaves differently from an ordinary chloroalkane.

Formula
C6H5Cl
Functional group
Halogenoarenes
Molar mass
112.55 g/mol
Also known as
Monochlorobenzene, Phenyl chloride, Benzene chloride, Chlorobenzol, Chlorbenzene, Monochlorbenzene

Overview

An aryl chloride that behaves differently from an ordinary chloroalkane.

Chlorine is bonded directly to an sp2 carbon in the aromatic ring. The usual backside SN2 pathway of a primary chloroalkane is not available at that carbon. A shared C–Cl bond therefore does not justify copying chloroalkane hydrolysis conditions onto chlorobenzene.

Identifiers

Formula
C6H5Cl
Functional group
Halogenoarenes
Molar mass
112.55 g/mol
Also known as
Monochlorobenzene, Phenyl chloride, Benzene chloride, Chlorobenzol, Chlorbenzene, Monochlorbenzene
Chemical identifiers
SMILES
C1=CC=C(C=C1)Cl
InChI
InChI=1S/C6H5Cl/c7-6-4-2-1-3-5-6/h1-5H
PubChem CID
7964

Properties

Melting Point
-45.2 °C
Boiling Point
131.6 °C
Density
1.1058 g/cu cm at 20 °C
Water solubility
In water, 499 mg/L at 25 °C

Related compounds

References

  1. PubChem Compound Summary: Chlorobenzene (CID 7964)National Center for Biotechnology Information · PubChem

    Identity, molecular formula, molecular weight and aliases retrieved via PUG REST on 2026-09-08.

  2. OpenStax Organic Chemistry: Characteristics of the SN2 reactionJohn McMurry · OpenStax · 2023

    Supports the qualitative structural interpretation of the recorded molecular structure; no new physical measurement or verified preparative yield is claimed.

  3. Hazardous Substances Data Bank (HSDB): Chlorobenzene — melting pointHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/7964#section=Melting-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Haynes, W.M. (ed.). CRC Handbook of Chemistry and Physics. 94th Edition. CRC Press LLC, Boca Raton: FL 2013-2014, p. 3-98

  4. Hazardous Substances Data Bank (HSDB): Chlorobenzene — boiling pointHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/7964#section=Boiling-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Haynes, W.M. (ed.). CRC Handbook of Chemistry and Physics. 94th Edition. CRC Press LLC, Boca Raton: FL 2013-2014, p. 3-98

  5. Hazardous Substances Data Bank (HSDB): Chlorobenzene — densityHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/7964#section=Density. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Haynes, W.M. (ed.). CRC Handbook of Chemistry and Physics. 94th Edition. CRC Press LLC, Boca Raton: FL 2013-2014, p. 3-98

  6. Hazardous Substances Data Bank (HSDB): Chlorobenzene — solubilityHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/7964#section=Solubility. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Yalkowsky, S.H., He, Yan, Jain, P. Handbook of Aqueous Solubility Data Second Edition. CRC Press, Boca Raton, FL 2010, p. 220