What is Cyclobutane?
{{chembox | Name = Cyclobutane | ImageFile = Cyclobutane2.svg | ImageFileL1 = Cyclobutane-buckled-3D-balls.png | ImageFileR1 = Cyclobutane-buckled-3D-vdW.png | ImageSize = 50px | ImageNameL1 = Cyclobutane | ImageNameR1 = Cyclobutane | PIN = Cyclobutane | Section1 = {{Chembox Identifiers | CASNo_Ref = {{cascite|correct|EBI}} | CASNo = 287-23-0 | UNII_Ref = {{fdacite|changed|FDA}} | UNII = 5X619RB2CY | SMILES = C1CCC1 | PubChem = 9250 | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | ChemSpiderID = 8894 | EC_number = 206-014-5 | UNNumber = 2601 | ChEBI = 30377 | Beilstein = 1900183 | Gmelin = 81684 | InChI = 1/C4H8/c1-2-4-3-1/h1-4H2 | InChIKey = PMPVIKIVABFJJI-UHFFFAOYAP | StdInChI_Ref = {{stdinchicite|correct|chemspider}} | StdInChI = 1S/C4H8/c1-2-4-3-1/h1-4H2 | StdInChIKey_Ref = {{stdinchicite|changed|chemspider}} | StdInChIKey = PMPVIKIVABFJJI-UHFFFAOYSA-N }} | Section2 = {{Chembox Properties | Formula = C<sub>4</sub>H<sub>8</sub> | Appearance = Colorless gas | MolarMass = 56.107 g/mol | MeltingPtC = -91 | BoilingPtC = 12.5 | Density = 0.720 g/cm<sup>3</sup> }} | Section7 = {{Chembox Hazards | GHSPictograms = {{GHS02}}{{GHS04}} | GHSSignalWord = Danger | HPhrases = {{H-phrases|220|280}} | PPhrases = {{P-phrases|210|377|381|403|410+403}} | NFPA-H=1 | NFPA-F=4 | NFPA-R=0 }} | Section8 = {{Chembox Related | OtherAnions = | OtherCations = | OtherFunction = [[Butane]] | OtherFunction_label = [[alkane]] | OtherCompounds = [[Cyclobutene]]; [[Cyclobutadiene]]; [[Cyclopropane]]; [[Cyclopentane]] }} | Verifiedfields = changed | Watchedfields = changed | verifiedrevid = 439048895 }} '''Cyclobutane''' is a [[cycloalkane]] [[organic compound]] with the formula (CH<sub>2)</sub><sub>4</sub><sub>,</sub> 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