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{{chembox |
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{{Chembox |
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| verifiedrevid = 390512061 |
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| Watchedfields = changed |
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| References=<ref></ref> |
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| verifiedrevid = 443869216 |
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| ImageFile=Eicosane.png |
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| ImageFile = Eicosane.png |
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| ImageSize=250px |
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| ImageFile_Ref = {{chemboximage|correct|??}} |
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| IUPACName=Icosane |
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| ImageSize = 300 |
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| OtherNames=Didecyl<br>''n''-Eicosane |
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| ImageAlt = Structural formula of icosane |
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| Section1={{Chembox Identifiers |
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| ImageFile1 = Icosane 3D ball.png |
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| InChIKey = CBFCDTFDPHXCNY-UHFFFAOYAJ |
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| ImageFile1_Ref = {{chemboximage|correct|??}} |
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| ImageSize1 = 300 |
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| ImageAlt1 = Ball and stick model of the icosane molecule |
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| PIN = Icosane<ref>{{cite book |author=] |date=2014 |title=Nomenclature of Organic Chemistry: IUPAC Recommendations and Preferred Names 2013 |publisher=] |pages=59 |doi=10.1039/9781849733069 |isbn=978-0-85404-182-4}}</ref> |
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| OtherNames = Eicosane, Eichosane |
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|Section1={{Chembox Identifiers |
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| CASNo = 112-95-8 |
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| CASNo_Ref = {{cascite|correct|CAS}} |
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| PubChem = 8222 |
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| ChemSpiderID = 7929 |
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| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} |
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| UNII = 3AYA9KEC48 |
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| UNII_Ref = {{fdacite|correct|FDA}} |
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| EINECS = 204-018-1 |
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| MeSHName = eicosane |
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| ChEBI = 43619 |
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| ChEBI_Ref = {{ebicite|correct|EBI}} |
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| ChEMBL = 1233983 |
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| ChEMBL_Ref = {{ebicite|changed|EBI}} |
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| Beilstein = 1700722 |
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| SMILES = CCCCCCCCCCCCCCCCCCCC |
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| StdInChI = 1S/C20H42/c1-3-5-7-9-11-13-15-17-19-20-18-16-14-12-10-8-6-4-2/h3-20H2,1-2H3 |
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| StdInChI = 1S/C20H42/c1-3-5-7-9-11-13-15-17-19-20-18-16-14-12-10-8-6-4-2/h3-20H2,1-2H3 |
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| StdInChI_Ref = {{stdinchicite|correct|chemspider}} |
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| StdInChIKey = CBFCDTFDPHXCNY-UHFFFAOYSA-N |
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| StdInChIKey = CBFCDTFDPHXCNY-UHFFFAOYSA-N |
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| CASNo_Ref = {{cascite|correct|CAS}} |
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| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} |
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| CASNo=112-95-8 |
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| PubChem=8222 |
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| EINECS=204-018-1 |
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| SMILES = C(CCCCCCCCCCCCCCCCC)CC |
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| InChI=1/C20H42/c1-3-5-7-9-11-13-15-17-19-20-18-16-14-12-10-8-6-4-2/h3-20H2,1-2H3 |
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| ChemSpiderID=7929 |
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}} |
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| Section2={{Chembox Properties |
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| Formula=C<sub>20</sub>H<sub>42</sub> |
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| MolarMass=282.5475 g/mol |
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| Appearance=Colorless crystals or wax-like solid |
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| Density= |
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| MeltingPtC=36.7 |
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| BoilingPtC=342.7 |
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| Solubility=Insoluble |
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}} |
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| Section3={{Chembox Hazards |
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| MainHazards= |
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| FlashPt= |
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| Autoignition= |
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}} |
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}} |
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|Section2={{Chembox Properties |
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| C=20 | H=42 |
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| Appearance = Colorless, waxy crystals |
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| Odor = Odorless |
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| MeltingPtK = 309 to 311 |
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| BoilingPtK = 616.2 |
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| LogP = 10.897 |
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| HenryConstant = 31 μmol Pa<sup>−1</sup> kg<sup>−1</sup> |
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}} |
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|Section3={{Chembox Thermochemistry |
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| Entropy = 558.6 J K<sup>−1</sup> mol<sup>−1</sup> |
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| HeatCapacity = 602.5 J K<sup>−1</sup> mol<sup>−1</sup> (at 6.0 °C) |
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}} |
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|Section4={{Chembox Hazards |
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| FlashPt = > |
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| FlashPtC = 113 |
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| NFPA-F = 1 |
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| NFPA-H = 0 |
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| NFPA-R = 0 |
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}} |
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|Section5={{Chembox Related |
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| OtherFunction_label = alkanes |
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| OtherFunction = {{Unbulleted list|]|]}} |
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}} |
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}} |
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'''Icosane''' (alternative spelling '''eicosane''' and '''eichosane'''<ref>{{cite book |last1=Vargaftik |first1=N. B. |title=Handbook of physical properties of liquids and gases: pure substances and mixtures |date=1983 |publisher=Hemisphere Pub. Corp |location=Washington |isbn=9780891163565 |edition=2nd}}</ref>) is an ] with the ] C<sub>20</sub>H<sub>42</sub>. It has 366,319 ]s. |
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''n''-Icosane (the straight-chain structural ] of icosane) is the shortest compound found in ]es used to form candles. |
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'''Icosane''' (also known by the name '''eicosane''' or as '''didecyl''') is an ] with the ] C<sub>20</sub>H<sub>42</sub>. It has 366,319 ]s. |
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Icosane's size, state or chemical inactivity does not exclude it from the traits its smaller alkane counterparts have. It is a colorless, non-polar ], nearly unreactive except when it burns. It is less dense than and insoluble in water. Its non-polar trait means it can only perform weak ] bonding (]/]s). |
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Icosane has little use in the ] industry, as its high ] makes it an inefficient fuel. Due to its chemical inactivity, ''n''-icosane (the straight-chain structural ] of icosane) is part of the ] group, and is the shortest molecule in the ] used to form candles. |
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Icosane's size, state or chemical inactivity does not exclude it from the traits its smaller alkane counterparts have. It is a colorless, less dense than water, non-polar ], nearly non-reactive unless combusted, and insoluble in water. Its non-polar trait means it can only perform weak ] bonding (]/]s). |
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Icosane's phase transition at a moderate temperature makes it a candidate ], or PCM which can be used to store thermal energy and control temperature. |
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Icosane's phase transition at a moderate temperature makes it a candidate ], or PCM which can be used to store thermal energy and control temperature. |
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It can be detected in the body odor of persons suffering from ].<ref>{{cite journal |last1= Trivedi|first1= Drupad K.|last2= Sinclair|first2= Eleanor|last3= Xu|first3= Yun|last4= Sarkar|first4= Depanjan|last5= Walton-Doyle|first5= Caitlin|last6= Liscio|first6= Camilla|last7= Banks|first7= Phine|last8= Milne|first8= Joy|last9= Silverdale|first9= Monty|last10= Kunath|first10= Tilo|last11= Goodacre|first11= Royston|last12= Barran|first12= Perdita|title= Discovery of Volatile Biomarkers of Parkinson's Disease from Sebum|journal= ACS Central Science|year= 2019|volume= 5|issue= 4|pages= 599–606|doi=10.1021/acscentsci.8b00879 |pmid= 31041379|pmc= 6487537}}</ref> |
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==Naming== |
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IUPAC currently recommends '''icosane''',<ref name=IUPAC1>{{cite web|url=http://www.acdlabs.com/iupac/nomenclature/93/r93_328.htm|title=Table 11 Basic numerical terms (multiplying affixes)|publisher=]|access-date=2011-02-16}}</ref> whereas ] and ] use '''eicosane'''.<ref name=IUPAC2>{{cite web|url=http://www.acdlabs.com/iupac/nomenclature/93/r93_332.htm|title=Footnote for Table 11|publisher=]|access-date=2011-02-16}}</ref> |
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== See also == |
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* ] |
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==References== |
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==References== |
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==External links== |
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==External links== |
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* at Dr. Duke's Phytochemical and Ethnobotanical Databases |
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* at Dr. Duke's Phytochemical and Ethnobotanical Databases |
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{{Alkanes}} |
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{{alkanes}} |
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