Cyclohexane

A hydrocarbon, C6H12, 84.162 g/mol. Boiling point 80.7 °C at 760 mm Hg, melting point 6.47 °C, as published.

verified recordOrganic — hydrocarbon9 measured properties

Identifiers

Molecular formula: C₆H₁₂
Molecular weight: 84.162 g/mol
Exact mass: 84.0939 g/mol
IUPAC name: cyclohexane
SMILES: C1CCCCC1
InChI: InChI=1S/C6H12/c1-2-4-6-5-3-1/h1-6H2
InChIKey: XDTMQSROBMDMFD-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: 177.3 °F at 760 mmHg (NTP, 1992)measured · CAMEO Chemicals; 80.7 °C at 760 mm Hgmeasured · Hazardous Substances Data Bank (HSDB)
Melting Point: 43.7 °F (NTP, 1992)measured · CAMEO Chemicals; 6.47 °Cmeasured · Hazardous Substances Data Bank (HSDB)
Density: 0.779 at 68 °F (USCG, 1999) - Less dense than water; will floatmeasured · CAMEO Chemicals; 0.7781 at 20 °C/4 °Cmeasured · Hazardous Substances Data Bank (HSDB)
Solubility: less than 1 mg/mL at 63 °F (NTP, 1992)measured · CAMEO Chemicals; In water, 55 mg/L at 25 °Cmeasured · Hazardous Substances Data Bank (HSDB)
Vapor Pressure: 95 mmHg at 68 °F ; 100 mmHg at 77.9 °F (NTP, 1992)measured · CAMEO Chemicals; 96.9 [mmHg]measured · Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
LogP: log Kow = 3.44measured · Hazardous Substances Data Bank (HSDB); 3.44measured · Human Metabolome Database (HMDB)
Flash Point: -4 °F (NTP, 1992)measured · CAMEO Chemicals; -4 °Fmeasured · Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Viscosity: 0.977 mPa.s at 20 °Cmeasured · Campbell ML; Cyclohexane. Ullmann's Encyclopedia of Industrial Chemistry. 7th ed. (1999-2014). New York, NY: John Wiley & Sons. Online Posting Date: Oct 15, 2011.; 1.26x10-6 mm²/s at 26 °Cmeasured · reference compound database
Refractive Index: Index of refraction: 1.42662 at 20 °C/Dmeasured · Haynes, W.M. (ed.). CRC Handbook of Chemistry and Physics. 94th Edition. CRC Press LLC, Boca Raton: FL 2013-2014, p. 3-132

Calculated properties

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

Molecular weight: 84.16 g/molcalculated · reference compound database; Average mass of one molecule, from reference compound database.
Exact mass: 84.093900383 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: 15calculated · 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: 2.3406calculated · 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: 27.702 cm³/molcalculated · chemistry engine; Relates to the molecule's polarisability.
Fraction sp³ carbons: 1calculated · chemistry engine; Share of carbon atoms with tetrahedral bonding.
QED drug-likeness: 0.4223calculated · chemistry engine; Quantitative estimate of drug-likeness (0–1).

What it is made of

Elements

C Carbon6 atoms · 85.6% by mass
H Hydrogen12 atoms · 14.4% 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: 6
Total atoms, hydrogen included: 18
Rings: 1
Aromatic rings: 0
Stereocentres: 0
Formal charge: 0

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 Cyclohexane yet.

Other names for it

The systematic name on this record is cyclohexane.

The sources also call it Hexamethylene, Hexahydrobenzene, Hexanaphthene, Cyclohexan, Cykloheksan, Benzene, hexahydro-, Cicloesano, Cyclohexaan, Benzenehexahydride, RCRA waste number U056, Caswell No. 269.

Structurally related

Nothing structurally close to Cyclohexane has a page here yet.

Seen alongside it in reaction records

Molecules that appear in the same recorded reactions as Cyclohexane. This says nothing about structure: most of them are the bases, solvents, ligands and catalysts the chemistry needed, and they are here because somebody put them in the same flask.

1,2-Diallyloxybenzene

formed as a product

C₁₂H₁₄O₂, 190.242 g/mol.

1,3-Dibromopropane

used as a reactant

C₃H₆Br₂, 201.889 g/mol.

1,2-Dimethoxyethane

used as a reactant

C₄H₁₀O₂, 90.122 g/mol.

Where these values came from

reference compound database8078
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.