2-Chlorotoluene

An aromatic organohalide, C7H7Cl, 126.586 g/mol. Boiling point 158.97 °C, melting point -35.59 °C, as published.

verified recordOrganic — aromatic organohalide9 measured properties

Identifiers

Molecular formula: C₇H₇Cl
Molecular weight: 126.586 g/mol
Exact mass: 126.023628 g/mol
IUPAC name: 1-chloro-2-methylbenzene
SMILES: Cc1ccccc1Cl
InChI: InChI=1S/C7H7Cl/c1-6-4-2-3-5-7(6)8/h2-5H,1H3
InChIKey: IBSQPLPBRSHTTG-UHFFFAOYSA-N

Open in ReactionLens Use in reaction prediction

Measured properties

Published measurements, each with its source. Two readings of one property are both shown, in the units each used.

Boiling Point: 318.15 °F at 760 mmHg (NTP, 1992)measured · CAMEO Chemicals; 158.97 °Cmeasured · Hazardous Substances Data Bank (HSDB)
Melting Point: -31.2 °F (NTP, 1992)measured · CAMEO Chemicals; -35.59 °Cmeasured · Hazardous Substances Data Bank (HSDB)
Density: 1.0825 at 68 °F (USCG, 1999) - Denser than water; will sinkmeasured · CAMEO Chemicals; 1.0826 @ 20 °C/4 °Cmeasured · Hazardous Substances Data Bank (HSDB)
Solubility: 0.009 % at 77 °F (NIOSH, 2024)measured · CAMEO Chemicals; FREELY SOL IN CHLOROFORMmeasured · Hazardous Substances Data Bank (HSDB)
Vapor Pressure: 10 mmHg at 109.8 °F (NTP, 1992)measured · CAMEO Chemicals; 3.43 [mmHg]measured · Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
LogP: Log Kow= 3.42measured · Hazardous Substances Data Bank (HSDB); 3.4measured · ILO-WHO International Chemical Safety Cards (ICSCs)
Flash Point: 126 °F (NTP, 1992)measured · CAMEO Chemicals; 126 °Fmeasured · Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Viscosity: 1.022 mPa-s @ 20 °Cmeasured · Gerhartz, W. (exec ed.). Ullmann's Encyclopedia of Industrial Chemistry. 5th ed.Vol A1: Deerfield Beach, FL: VCH Publishers, 1985 to Present., p. VA6 340
Refractive Index: INDEX OF REFRACTION: 1.5258 @ 20 °C/D @ 99.6 MOLE-% PURITYmeasured · Budavari, S. (ed.). The Merck Index - Encyclopedia of Chemicals, Drugs and Biologicals. Rahway, NJ: Merck and Co., Inc., 1989., p. 336; Index of refraction 1.5268 @ 20 °C/Dmeasured · Lide, D.R. (ed.). CRC Handbook of Chemistry and Physics. 75th ed. Boca Raton, Fl: CRC Press Inc., 1994-1995., p. C-518

Calculated properties

Derived from the structure, not from a sample; kept apart from the measurements above.

Molecular weight: 126.58 g/molcalculated · reference compound database; Average mass of one molecule, from reference compound database.
Exact mass: 126.0236279 Dacalculated · reference compound database; Mass of the most common isotopic form.
XLogP3: 3.4calculated · reference compound database; Estimated oil/water partition, computed by reference compound database.
Polar surface area: 0 Å²calculated · reference compound database; Polar surface area as computed by reference compound database.
Complexity: 70calculated · reference compound database; A rough measure of how intricate the structure is.
H-bond donors: 0calculated · reference compound database
H-bond acceptors: 0calculated · reference compound database
logP: 2.6484calculated · chemistry engine; Estimated preference for oil over water. Higher means more oil-like.
Topological polar surface area: 0 Å²calculated · chemistry engine; Surface area from polar atoms; relates to how easily a molecule crosses membranes.
H-bond donors: 0calculated · chemistry engine; Atoms that can donate a hydrogen bond.
H-bond acceptors: 0calculated · chemistry engine; Atoms that can accept a hydrogen bond.
Rotatable bonds: 0calculated · chemistry engine; Single bonds the molecule can freely twist around.
Molar refractivity: 36.189 cm³/molcalculated · chemistry engine; Relates to the molecule's polarisability.
Fraction sp³ carbons: 0.1429calculated · chemistry engine; Share of carbon atoms with tetrahedral bonding.
QED drug-likeness: 0.5015calculated · chemistry engine; Quantitative estimate of drug-likeness (0–1).

What it is made of

Elements

C Carbon7 atoms · 66.4% by mass
Cl Chlorine1 atom · 28.0% by mass
H Hydrogen7 atoms · 5.6% by mass

Percentages are of the molecular weight above, worked out the same way the molar mass calculator does it.

Structure

Heavy atoms, hydrogen excluded: 8
Total atoms, hydrogen included: 15
Rings: 1
Aromatic rings: 1
Stereocentres: 0
Formal charge: 0

Functional groups

Halide (C–X)
A halogen atom attached to carbon.
Aromatic ring
A flat six-membered ring with delocalised electrons.

Matched by structural pattern, not by a measurement.

The molecule in three dimensions

Rotate and inspect the atoms. Loaded only when you ask, so the page stays light.

The drawing above is a diagram of what is bonded to what. A molecule is not flat, and the model here is one low-energy shape generated from the connectivity — useful for seeing which groups can reach each other, and not a measured structure. A real sample is a population of conformations, interconverting.

Reactions it appears in

No documented reaction with a written procedure and a source involves 2-Chlorotoluene yet.

Other names for it

The systematic name on this record is 1-chloro-2-methylbenzene.

The sources also call it 1-Chloro-2-methylbenzene, o-Chlorotoluene, o-Tolyl chloride, Benzene, 1-chloro-2-methyl-, ortho-Chlorotoluene, Toluene, o-chloro-, 2-Methylchlorobenzene, 2-Chloro-1-methylbenzene, Halso 99, 1-METHYL-2-CHLOROBENZENE, DTXSID8023977.

Structurally related

Molecules sharing this formula, or whose fingerprint is at least 40% similar to this one. Similarity is Tanimoto on Morgan fingerprints over this library only — it is a measure of structural overlap, not of how alike they behave.

1,2-Dichlorobenzene

C6H4Cl2

Where these values came from

reference compound database7238
compound record
chemistry engine
structure perception

compound record.

What this page does not claim

Identifiers are copied from the source record, measured values are reported as published, and calculated values are marked as calculated. Nothing here is a hazard, purity or handling assessment — how the library is checked.