2-Methylhexane

changed changed 477214578 2-methylhexane-2D-skeletal.svg correct ?? 160 Skeletal formula of 2-methylhexane 2-methylhexane.png correct ?? Skeletal formula of 2-methylhexane with all implicit carbons shown, and all explicit hydrogens added 2-methylhexane-3D-balls.png correct ?? 160 Ball and stick model of 2-methylhexane 2-Methylhexane2-METHYLHEXANE - Compound Summary https://pubchem.ncbi.nlm.nih.gov/compound/11582 PubChem Compound National Center for Biotechnology Information 6 March 2012 USA 26 March 2005 Identification and Related Records 591-76-4 correct CAS 11582 11094 correct chemspider 209-730-6 3295 MO3871500 1696856 CCCCC(C)C changed FDA YI4679P2SP 1S/C7H16/c1-4-5-6-7(2)3/h7H,4-6H2,1-3H3 correct chemspider GXDHCNNESPLIKD-UHFFFAOYSA-N correct chemspider 7 16 Colorless liquid Odorless 0.679 g cm−3 154.1 to 155.3 362.7 to 363.7 19 nmol Pa−1 kg−1 15.7 kPa (at 37.7 °C) 1.384 −86.24·10−6 cm3/mol −231.1 – −228.5 kJ mol−1 −4.8127 – −4.8103 MJ mol−1 323.34 J K−1 mol−1 222.92 J K−1 mol−1 flame exclamation mark health hazard environment DANGER 225 304 315 336 410 210 261 273 301+310 331 2 0 3 −1 280 1–7% alkanes 2-Methylpentane 3-Methylpentane 3-Ethylpentane 3-Methylhexane 2-Methylheptane 3-Methylheptane 2-Ethyl-1-butanol Valnoctamide 2-Ethylhexanol Valpromide 2-Ethylhexanoic acid 2-Methylhexane (C7H16, also known as isoheptane, ethylisobutylmethane) is an isomer of heptane. It is structurally a hexane molecule with a methyl group attached to its second carbon atom. It exists in most commercially available heptane merchandises as an impurity but is usually not considered as impurity in terms of reactions since it has very similar physical and chemical properties when compared to n-heptane (straight-chained heptane). Being an alkane, 2-methylhexane is insoluble in water, but is soluble in many organic solvents, such as alcohols and ether. However, 2-methylhexane is more commonly considered as a solvent itself. Therefore, even though it is present in many commercially available heptane products, it is not considered as a destructive impurity, as heptane is usually used as a solvent. Nevertheless, by concise processes of distillation and refining, it is possible to separate 2-methylhexane from n-heptane. Within a group of isomers, those with more branches tend to ignite more easily and combust more completely. Therefore, 2-methylhexane has a lower Autoignition temperature and flash point when compared to heptane. Theoretically 2-methylhexane also burns with a less sooty flame, emitting higher-frequency radiation; however, as heptane and 2-methylhexane differ by only one carbon atom, in terms of branching, both burn with a bright yellow flame when ignited. Compared to n-heptane, 2-methylhexane has lower melting and boiling points. 2-methylhexane is also less dense than heptane. On the NFPA 704 scale, 2-methylhexane is listed as a reactivity level-0 chemical, along with various other alkanes. In fact, most alkanes are unreactive except in extreme conditions, such as combustion or strong sunlight. At the presence of oxygen and flame, 2-methylhexane, like heptane, combusts mostly completely into water and carbon dioxide. With UV-light and mixed with halogens in solvents, usually bromine in 1,1,1-trichloroethane, a substitution reaction occurs. See also 3-Methylhexane References http://www.chemexper.com/search/cas/591764.html 2-Methylhexane chemexper.com 22 November 2011 https://www.mathesongas.com/pdfs/msds/MAT27910.pdf Material Safety Data Sheet ChemADVISOR 22 November 2011 21 March 2006 https://web.archive.org/web/20060321163837/https://www.mathesongas.com/pdfs/msds/MAT27910.pdf dead http://www.inchem.org/documents/icsc/icsc/eics0658.htm Isoheptane October 2002 INCHEM: Chemical Safety Information from Intergovernmental Organizations International Programme on Chemical Safety 22 November 2011 Category:Alkanes