When compared to the conventional structural formula, it can be easily noticed that a condensed formula is less lengthy. This information can be used to tell whether isobutane will float (or sink) if dropped in water (Buoyancy). Each carbon atom is understood to be attached to enough hydrogen atoms to give each carbon atom four bonds. ; Paizanskaya, I.L., Identification of hydrocarbons C1-C9 of petrol fractions of oils and condensates in the use of capillary columns with dinonylphthalate, Zh. Cyclohexane C 6 H 12. , The entropies of n-butane and isobutane, with some heat capacity data for isobutane, J. Chem . EMBL-EBI, Wellcome Genome Campus, Hinxton, Cambridgeshire, CB10 Gas Chromatogr., 6, 1968, 203-217. umn class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 50 ft; Column type: Packed; Start T: 86 C; CAS no: 75285; Active phase: Squalane; Carrier gas: He; Substrate: Chromosorb P; Data type: Kovats RI; Authors: Hively, R.A.; Hinton, R.E., Variation of the retention index with temperature on squalane substrates, J. Draw complete structural formula of 2-Bromo-3,4-dimethyloctane. Line-angle formulas imply a carbon atom at the corners and ends of lines. Symp. In this isomer, 3 Carbons are bonded to a single Carbon Condensed chemical formulas show the hydrogen atoms (or other atoms or groups) right next to the carbon atoms to which they are attached. Condensed Structural Formula is a system for writing organic compounds in a single line. ; Ramsey, J.D., Volatile Substance Abuse, UNODC Technical Series, No 5, United Nations, Office on Drugs and Crime, Vienna International Centre, PO Box 500, A-1400 Vienna, Austria, 1997, 56. ass: Standard non-polar; Column diameter: 0.20 mm; Column length: 50 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 35 C; End T: 200 C; End time: 10 min; Start time: 15 min; CAS no: 75285; Active phase: PONA; Carrier gas: Nitrogen; Phase thickness: 0.50 um; Data type: Normal alkane RI; Authors: Zhang, X.; Ding, L.; Sun, Z.; Song, L.; Sun, T., Study on quantitative structure-retention relationships for hydrocarbons in FCC gasoline, Chromatographia, 70(3/4), 2009, 511-518. ass: Standard non-polar; Column type: Capillary; CAS no: 75285; Active phase: Methyl Silicone; Data type: Normal alkane RI; Authors: Spieksma, W., Determination of vapor liquid equilibrium from the Kovats retention index on dimethylsilicone using the Wilson mixing tool, J. Hi. 1. : none. Properties of 2-methylpropane: It is a colorless as well as odorless gas. [citation needed] The normal boiling point is just a few . Legal. The connectivity of atoms (carbon atoms). We use several kinds of formulas to describe organic compounds. Each carbon atom is understood to be attached to enough hydrogen atoms to give each carbon atom four bonds. For physicochemical, thermodynamic, transport, spectra, and other property data & information, the followings are available from Mol-Instincts, a chemical database based on quantum chemical computations: The SMILES string of ISOBUTANE is CC(C)C, which can be can be imported by most molecule editors for conversion back into two-dimensional drawings or three-dimensional models of the ISOBUTANE. 11.3: Condensed Structural and Line-Angle Formulas is shared under a not declared license and was authored, remixed, and/or curated by LibreTexts. bonded to it. Chem., 12(7), 1984, 572-578. https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:30363, ACD/Labs Percepta Platform - PhysChem Module, US Environmental Protection Agencys EPISuite, Compounds with the same molecular formula, Search Google for structures with same skeleton, 10-12 F / 760 mmHg (-12.2222--11.1111 C / 760 mmHg), 11 F / 760 mmHg (-11.6667 C / 760 mmHg), Colorless gas with a gasoline-like or natural gas odor. The site owner may have set restrictions that prevent you from accessing the site. Gas Chromatogr., 6, 1968, 203-217. umn class: Standard non-polar; Column diameter: 0.5 mm; Column length: 100 m; Column type: Capillary; Start T: 60 C; CAS no: 75285; Active phase: SE-30; Data type: Kovats RI; Authors: Bredael, P., Retention indices of hydrocarbons on SE-30, J. Hi. The LibreTexts libraries arePowered by NICE CXone Expertand are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. By using the appropriate fixed point theory findings, this paper investigates the existence of solutions to fractional boundary value problems of Caputo type on such graphs. Chromatogr., 7(2), 1989, 88-92. ass: Standard non-polar; Column type: Capillary; CAS no: 75285; Active phase: Methyl Silicone; Data type: Normal alkane RI; Authors: Chen, Y.; Feng, C., QSPR study on gas chromatography retention index of some organic pollutants, Comput. A molecular formula shows only the kinds and numbers of atoms in a molecule. Unfortunately, structural formulas are difficult to type/write and take up a lot of space. Formula: C 4 H 10; Molecular weight: 58.1222; IUPAC Standard . Thus, structural formulas identify the specific isomers by showing the order of attachment of the various atoms. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. The structural formula for propane shows three axial carbon atoms and eight peripheral hydrogen atoms. An expanded structural formula shows all the carbon and hydrogen atoms and the bonds attaching them. In the case of n-butane, all carbon atoms are in straight-chain whereas, in the case of isobutane, there is a side chain in the molecule. The specific gravity of isobutane is the ratio of the density of isobutane to that of a reference substance (Usually water). acid is CH3COOH. Join our subscribrs list to get the latest news, updates and special offers delivered directly in your inbox. 1.1, California Environmental Protection Agency, Air Resources Board, El Monte, California, 1997, 22. umn class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 120 m; Column type: Capillary; Start T: 100 C; CAS no: 75285; Active phase: Squalane; Carrier gas: He; Data type: Kovats RI; Authors: Lulova, N.I. The radius of the spheres is therefore smaller than the rod lengths in order to provide a clearer view of the atoms and bonds throughout the chemical structure model of ISOBUTANE. A structural formula shows all the carbon and hydrogen atoms and the bonds attaching them. Chemists often use condensed structural formulas to alleviate these problems. Khim., 43, 1988, 127-135. umn class: Semi-standard non-polar; Column diameter: 0.22 mm; Column length: 50 m; Column type: Capillary; Start T: 70 C; CAS no: 75285; Active phase: Squalane; Carrier gas: He; Data type: Kovats RI; Authors: Lunskii, M.Kh. Instrum. Lewis, R.J. Sr.; Hawley's Condensed Chemical Dictionary 15th Edition. Sci., 24, 2001, 213-220. ass: Standard non-polar; Column diameter: 0.25 mm; Column length: 100 m; Column type: Capillary; Heat rate: 1 K/min; Start T: 30 C; End T: 220 C; CAS no: 75285; Active phase: Petrocol DH; Carrier gas: He; Phase thickness: 0.5 um; Data type: Linear RI; Authors: Subramaniam, B.; Bochniak, D.; Snavely, K., Fischer-Tropsch synthesis in supercritical reaction media, Lawrence Department of Chemical and Petroleum Engineering (DOE/PC/92532--T7), United States Department of Energy, Pittsburgh, PA, 1994, 8. ass: Standard non-polar; Column diameter: 0.25 mm; Column length: 100 m; Column type: Capillary; Heat rate: 1 K/min; Start T: 30 C; End T: 220 C; CAS no: 75285; Active phase: Petrocol DH; Carrier gas: He; Phase thickness: 0.5 um; Data type: Linear RI; Authors: White, C.M. Chromatogr., 18, 1995, 403-412. class: Standard non-polar; Column diameter: 0.32 mm; Column length: 60 m; Column type: Capillary; Description: -40 C for 12 min; -40 - 125 C at 3 deg.min; 125-185 C at 6 deg/min; 185 - 220 C at 20 deg/min; hold 220 C for 2 min; CAS no: 75285; Active phase: DB-1; Carrier gas: He; Phase thickness: 1.0 um; Data type: Kovats RI; Authors: Hoekman, S.K., Improved gas chromatography procedure for speciated hydrocarbon measurements of vehicle emissions, J. ; Odell, A.L., A system of standard retention indices and its uses. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. Unfortunately, expanded structural formulas are difficult to type/write and take up a lot of space. Sci., 19, 1981, 40-45. umn class: Standard non-polar; Column length: 26 ft; Column type: Packed; Start T: 70 C; CAS no: 75285; Active phase: SE-30; Substrate: Diatoport S; Data type: Kovats RI; Authors: Widmer, H., Gas chromatographic identification of hydrocarbons using retention indices, J. formula is: The condensed structural formula for the compound 1-Octanol is The ISOBUTANE structure data file can be imported to most of the cheminformatics software systems and applications. CH(CH3)3. ChEBI. Both of these molecules have the same molecular formula that is C 4 H 10. An alkane that is propane substituted by a methyl group at position 2. III. (Rus. ; Hackett, J.; Anderson, R.R. what makes muscle tissue different from other tissues? View the full answer. Chromatogr., 22(10), 1999, 565-588. ass: Standard non-polar; Column type: Capillary; CAS no: 75285; Active phase: Polydimethyl siloxanes; Data type: Normal alkane RI; Authors: Yin, C.; Guo, W.; Lin, T.; Liu, S.; Fu, R.; Pan, Z.; Wang, L., Application of wavelet neural network to the prediction of gas chromatographic retention indices of alkanes, J. Chinese Chem. Octane- condensed formula - CH3(CH2)6CH3. Chromatogr. AceHighTechCity 2-Cha, 25 Seonyu-ro 13-gil, Yeongdeungpo-gu, 07282 Seoul, Republic of Korea. ; Lonneman, W.A., Characterization of non-methane volatile organic compounds at swine facilities in eastern North Carolina, Atm. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. Soc., 48, 2001, 739-749. umn class: Standard non-polar; Column diameter: 0.28 mm; Column length: 74.6 m; Column type: Capillary; Start T: 50 C; CAS no: 75285; Active phase: Methyl Silicone; Carrier gas: N2; Data type: Normal alkane RI; Authors: Xu, Y., Capillary gas chromatographic analysis of individual hydrocarbons in catalytic cracking gasoline boiling below 100 C, Chin. Environ., 39, 2005, 6707-6718. class: Standard non-polar; Column diameter: 0.1 mm; Column length: 20 m; Column type: Capillary; Description: 40C(0.4min) =>10C/min=> 110C=>20C/min =>260C (1min); CAS no: 75285; Active phase: DB-1; Carrier gas: He; Phase thickness: 0.4 um; Data type: Normal alkane RI; Authors: LECO Corporation, Rapid qualitative GC/TOFMS analysis of unleaded gasoline, 2003. class: Standard non-polar; Column diameter: 0.25 mm; Column length: 100 m; Column type: Capillary; Description: 35 0C (13 min) ^ 10 0C/min -> 45 0C (15 min) ^ 1 0C/min -> 60 0C (15 min) ^ 1.9 0C/min -> 200 0C; CAS no: 75285; Active phase: RTX-1 PONA; Carrier gas: He; Phase thickness: 0.5 um; Data type: Normal alkane RI; Authors: Restek, Restek International, 1999 Product Guide, 1(1), 1999, 578-591, In original 578-591. class: Standard non-polar; Column diameter: 0.1 mm; Column length: 20 m; Column type: Capillary; Description: 40C(0.4min) => 10C/min =>110C =>20C/min =>260C (1min); CAS no: 75285; Active phase: DB-1; Carrier gas: He; Phase thickness: 0.4 um; Data type: Normal alkane RI; Authors: LECO Corporation, Rapid qualitative GC/TOFMS analysis of a petroleum refinery reformate standard, 2003. class: Standard non-polar; Column length: 20 ft; Column type: Packed; Description: 50C910min)=>20C/min=>90(6min)=>10C/min=>150C(hold); CAS no: 75285; Active phase: SE-30; Carrier gas: N2; Substrate: Chromosorb W; Data type: Normal alkane RI; Authors: Robinson, P.G. Chromatogr., 15, 1992, 75-84. ass: Standard non-polar; Column type: Capillary; CAS no: 75285; Active phase: OV-1; Data type: Normal alkane RI; Authors: Ramsey, J.D. ; Kail, S.; Spock, P.S., Linear temperature programmed retention indices of gasoline range hydrocarbons and chlorinated hydrocarbons on cross-linked polydimethylsiloxane, J. Hi. Gas Chromatogr., 6, 1968, 203-217. umn class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 50 ft; Column type: Packed; Start T: 67 C; CAS no: 75285; Active phase: Squalane; Carrier gas: He; Substrate: Chromosorb P; Data type: Kovats RI; Authors: Hively, R.A.; Hinton, R.E., Variation of the retention index with temperature on squalane substrates, J. A substance used in a thermodynamic heat pump cycle or refrigeration cycle that undergoes a phase change from a gas to a liquid and back. It is an isomer of butane. Heat of Vaporization at Normal Boiling Point, LogP (Octanol-Water Partition Coefficient), Ghose-Crippen Octanol-Water Partition Coefficient (logP), Moriguchi Octanol-Water Partition Coefficient (logP), Activity Score for Ion Channel Modulators, Activity Score for Nuclear Receptor Ligands, Normal Mode Frequency Analysis with Animation, Molecular Orbital (HOMO & LUMO) Visualization, quantum Chemical Computation Data (20 sets), Structure Data File (SDF/MOL File) of ISOBUTANE, 4-(hydroxyamino)-N-(5-methyl-1,2-oxazol-3-yl)benzene-1-sulfonamide, PROPANE-1,1,1,2,3,3,3-D7,2-(METHYL-D3)- (6CI,7CI,8CI,9CI). [13][14][15][16][17][18][19], Vendors and advocates of hydrocarbon refrigerants argue against such bans on the grounds that there have been very few such incidents relative to the number of vehicle air conditioning systems filled with hydrocarbons.[20][21]. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. For example, the molecular formula C4H10 tells us there are 4 carbon atoms and 10 hydrogen atoms in a molecule, but it doesnt distinguish between butane and isobutane. Gas Chromatogr., , 1967, 506-510. class: Standard non-polar; Column diameter: 0.53 mm; Column length: 60 m; Column type: Capillary; Description: 40C(6min)=>5C/min=>80C=>10C/min=>200C; CAS no: 75285; Active phase: SPB-1; Carrier gas: He; Phase thickness: 5 um; Data type: Normal alkane RI; Authors: Flanagan, R.J.; Streete, P.J. [7], In the Chevron Phillips slurry process for making high-density polyethylene, isobutane is used as a diluent. National Library of Medicine. Longest chain - Propane. Such a formula does not directly tell how the various atoms are interbonded. Chromatogr., 240, 1982, 423-444. ass: Semi-standard non-polar; Column length: 2 m; Column type: Packed; Heat rate: 5 K/min; Start T: 50 C; End T: 220 C; End time: 0 min; Start time: 0 min; CAS no: 75285; Active phase: Porapack Q; Carrier gas: Nitrogen; Data type: Normal alkane RI; Authors: Zenkevich, I.G. Finally, on the right is the line-angle (skeletal) structure; notice that the bonds are shown, but not the carbons and not the hydrogens bonded to carbon. Chemists often use condensed structural formulas to alleviate these problems. What is the difference between mango plants and maize plants in terms of root system? A structural formula shows all the carbon and hydrogen atoms and the bonds attaching them. Chemists often use condensed structural formulas to alleviate these problems. Write the condensedformula for each Lewis structure. Thus, structural formulas identify the specific isomers by showing the order of attachment of the various atoms. The LibreTexts libraries arePowered by NICE CXone Expertand are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. Comm., 3, 1980, 38-44. umn class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 300 ft; Column type: Capillary; Start T: 40 C; CAS no: 75285; Active phase: Squalane; Carrier gas: N2; Data type: Kovats RI; Authors: Matukuma, A., Retention indices of alkanes through C10 and alkenes through C8 and relation between boiling points and retention data, Gas Chromatogr., Int. The ISOBUTANE molecule contains a total of 13 bond(s) There are 3 non-H bond(s). It is also known as i-butane, 2-methylpropane, or methylpropane. Butane has two Propane Butane Virtual Model with Extended Structural Formula: Virtual Model with Extended Structural Formula: . I-0-3 Condensed Structural Formula: IC! Since the molecular formula of Butane is C4H10, the condensed Because the carbons on the left are drawn straight across, we cannot see corners easily, so bend your lines (zig-zag) so that the corners are apparent. It is a method that uses shorthand notation that contains more information than the chemical formula. Isobutane is obtained by isomerization of butane. Res. A condensed structural formula of t-butane is (CH 3) 3 CH, not CH 3 CH 3 CH 3 CH. The structural formula of a chemical compound is a graphical representation of the molecular structure showing how the atoms are arranged. We use several kinds of formulas to describe organic compounds. Your subscription to the newsletter is complete. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. For example, we can represent pentane (CH3CH2CH2CH2CH3) and isopentane [(CH3)2CHCH2CH3] as follows: Parentheses in condensed structural formulas indicate that the enclosed grouping of atoms is attached to the adjacent carbon atom. Isobutane, also known as i-butane, 2-methylpropane or methylpropane, is a chemical compound with molecular formula HC(CH3)3. (. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. A condensed structural formula for isohexane can be written as (CH 3) 2 CHCH 2 CH 2 CH 3. Draw line-angle formulas given structural formulas. Isobutane Molecular Formula CH Average mass 58.122 Da Monoisotopic mass 58.078251 Da ChemSpider ID 6120 More details: Names Properties Searches Spectra Vendors Articles More Names and Synonyms Database ID (s) Validated by Experts, Validated by Users, Non-Validated, Removed by Users 1730720 [Beilstein] 201-147-5 [EINECS] 270-654-1 [EINECS] - The structural formula of any compound is different from the . A structural formula shows all the carbon and hydrogen atoms and the bonds attaching them. CHEBI:30363. An alkane that is propane substituted by a methyl group at position 2. [1] Since the longest continuous chain in isobutane contains only three carbon atoms, the preferred IUPAC name is 2-methylpropane but the locant (2-) is typically omitted in general nomenclature as redundant; C2 is the only position on a propane chain where a methyl substituent can be located without altering the main chain and forming the constitutional isomer n-butane. Isobutane is a gas that is colourless and odourless. A molecular formula shows only the kinds and numbers of atoms in a molecule. ; Leont'eva, S.A.; Timofeeva, A.N., Gas-chromatographic method of determination of individual hydrocarbons in catalytic cracking gasolines, in Proceedings of All-Union Research Institute on Oil Processes. CAS Registry Number: 75-28-5; Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java . This one has two end-atoms (=primary) and two in-betweens (=secondary). Draw complete, condensed structural formulas of each isomer of C H Bry. National Center for Biotechnology Information . ChEBI ID. Example: Constitutional isomers with the same molecular formula but different connectivity. a. b. C. I d. e. 10. No tracking or performance measurement cookies were served with this page. This representation is a molecular formula. { "6.01:_Introduction_to_Organic_Chemistry" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.
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