Editing Cyclopentane (section)

{{chembox
|Verifiedimages = changed
|Watchedfields = changed
|verifiedrevid = 444653737
|ImageFileL1_Ref = {{chemboximage|correct|??}}
|ImageFileL1 = Cyclopentane v2.svg
|ImageClassL1 = skin-invert-image
|ImageSizeL1 = 100px
|ImageAltL1 = Skeletal formula
|ImageFileR1 = Cyclopentane3d.png
|ImageClassR1 = bg-transparent
|ImageSizeR1 = 110px
|ImageAltR1 = Space-filling model
|PIN = Cyclopentane
|OtherNames = pentamethylene
|Section1 = {{Chembox Identifiers
|ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
|ChemSpiderID = 8896
|InChI = 1/C5H10/c1-2-4-5-3-1/h1-5H2
|InChIKey = RGSFGYAAUTVSQA-UHFFFAOYAL
|StdInChI_Ref = {{stdinchicite|correct|chemspider}}
|StdInChI = 1S/C5H10/c1-2-4-5-3-1/h1-5H2
|StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
|StdInChIKey = RGSFGYAAUTVSQA-UHFFFAOYSA-N
|CASNo_Ref = {{cascite|correct|CAS}}
|CASNo=287-92-3
|UNII_Ref = {{fdacite|correct|FDA}}
|UNII = T86PB90RNU
|PubChem=9253
|ChEBI_Ref = {{ebicite|correct|EBI}}
|ChEBI = 23492
|SMILES=C1CCCC1
|RTECS=GY2390000
|EINECS = 206-016-6
}}
|Section2 = {{Chembox Properties
|Formula=C<sub>5</sub>H<sub>10</sub>
|MolarMass=70.1 g/mol
|Appearance=clear, colorless liquid
|Odor = mild, sweet
|Density=0.751 g/cm<sup>3</sup>
|MeltingPtC=-93.9
|BoilingPtC=49.2
|Solubility=156 mg·l<sup>−1</sup> (25 °C)<ref>{{GESTIS|ZVG=27960|CAS=287-92-3|Name=cyclopentane|Date=28 February 2015}}</ref>
|SolubleOther = soluble in [[ethanol]], [[acetone]], [[diethyl ether|ether]]
|pKa = ~45
|RefractIndex = 1.4065
|VaporPressure = 45 [[kPa]] (20 °C) <ref>{{cite web |url=http://www.ilo.org/dyn/icsc/showcard.display?p_version=2&p_card_id=0353 |title = ICSC 0353 - CYCLOPENTANE}}</ref>
|MagSus = −59.18·10<sup>−6</sup> cm<sup>3</sup>/mol
}}
|Section3 = {{Chembox Hazards
|MainHazards=Flammable<ref name=PGCH/>
|FlashPtC = -37.2
|AutoignitionPtC = 361
|NFPA-H = 1 | NFPA-F = 3 | NFPA-R = 0
|PEL = none<ref name=PGCH>{{PGCH|0171}}</ref>
|ExploLimits = 1.1%–8.7%<ref name=PGCH/>
|IDLH = N.D.<ref name=PGCH/>
|REL = TWA 600 ppm (1720 mg/m<sup>3</sup>)<ref name=PGCH/> 
}}
|Section4 = {{Chembox Related
|OtherCompounds = [[cyclopropane]], [[cyclobutane]], [[cyclohexane]]
}}
}}
'''Cyclopentane''' (also called '''C pentane''')<ref>{{cite journal |last1=Sárkány |first1=A. |last2=Gaál |first2=J. |last3=Toth |first3=L. |title=Comparative Study of C-Pentane and N-Pentane Transformations on Ni and Pt Catalysts |journal=Studies in Surface Science and Catalysis |date=1981 |volume=7 |pages=291–301 |doi=10.1016/S0167-2991(09)60278-0}}</ref> is a highly [[flammable]] [[alicyclic compound|alicyclic]] [[hydrocarbon]] with [[chemical formula]] [[C5H10|C<sub>5</sub>H<sub>10</sub>]] and [[CAS number]] 287-92-3, consisting of a ring of five [[carbon]] atoms each bonded with two [[hydrogen]] atoms above and below the plane. It is a colorless [[liquid]] with a [[petrol]]-like [[odor]]. Its [[freezing point]] is −94 °C and its [[boiling point]] is 49 °C. Cyclopentane is in the class of [[cycloalkane]]s, being [[alkane]]s that have one or more [[carbon ring]]s. It is formed by [[cracking (chemistry)|cracking]] [[cyclohexane]] in the presence of [[alumina]] at a high temperature and pressure.

It was first prepared in 1893 by the German chemist [[Johannes Wislicenus]].<ref>{{cite journal |last1=Wislicenus |first1=J. |last2=Hentschel |first2=W. |title=III. Der Pentamethenylalkohol und seine Derivate (Cyclopentanol and its derivatives)|journal=Justus Liebigs Annalen der Chemie |date=January 1893 |volume=275 |issue=2-3 |pages=322–330 |doi=10.1002/jlac.18932750216 | url=https://zenodo.org/records/1657308/files/article.pdf}}</ref>