Cyclobutane

Cyclobutane

Cyclobutane Cyclobutane
Names
Preferred IUPAC name Cyclobutane
Identifiers
CAS Number	287-23-0 Y[EBI]
3D model (JSmol)	Interactive image
Beilstein Reference	1900183
ChEBI	CHEBI:30377
ChemSpider	8894 Y
ECHA InfoCard	100.005.468
EC Number	206-014-5
Gmelin Reference	81684
PubChem CID	9250
UNII	5X619RB2CY N
UN number	2601
CompTox Dashboard (EPA)	DTXSID2059772
SMILES C1CCC1
Properties
Chemical formula	C4H8
Molar mass	56.107 g/mol
Appearance	Colorless gas
Density	0.720 g/cm3
Melting point	−91 °C (−132 °F; 182 K)
Boiling point	12.5 °C (54.5 °F; 285.6 K)
Hazards
GHS labelling:
Pictograms	Template:GHS02Template:GHS04
Signal word	Danger
Hazard statements	H220, H280
Precautionary statements	P210, P377, P381, P403, P410+P403
NFPA 704 (fire diamond)	1 4 0
Related compounds
Related alkane	Butane
Related compounds	Cyclobutene; Cyclobutadiene; Cyclopropane; Cyclopentane
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Cyclobutane is a cycloalkane organic compound with the formula (CH₂)₄, a colorless gas at room temperature. Cyclobutane is usually sold as a liquified gas (a gas that has been pressurized or frozen to be in a state that isn't natural). Variants of cyclobutane are called cyclobutanes. Cyclobutane has no uses in commerce or biology, but compounds containing cyclobutane are important in biology and biotechnology.

Structure

The carbon atoms within cyclobutane are at odd angles. Cyclobutane is unstable and will break at temperatures over about 500° celcius. Cyclobutane is connected to itself in a ladder-like structure. An example of this structure can be seen in the pentacycloanammoxic acid. This compound is a ladderane made up of five connected cyclobutane units.