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. 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. Fr., 4, 1966, 1351-1363. umn class: Standard polar; Column length: 26 ft; Column type: Packed; Start T: 70 C; CAS no: 75285; Active phase: Carbowax 20M; Substrate: Diatoport P; Data type: Kovats RI; Authors: Widmer, H., Gas chromatographic identification of hydrocarbons using retention indices, J. & Chromatogr. As a refrigerant, isobutane poses a fire and explosion risk in addition to the hazards associated with non-flammable CFC refrigerants. Isobutane is used as a refrigerant. The chemical bonding within the molecule is also shown, either explicitly or implicitly. It is a method that uses shorthand notation that contains more information than the chemical formula. [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. A condensed structural formula for isohexane can be written as (CH 3) 2 CHCH 2 CH 2 CH 3. What is the difference between mango plants and maize plants in terms of root system? Legal. bonded to another forming a chain with Hydrogens bonded to each of A structural formula shows all the carbon and hydrogen atoms and the bonds attaching them. In this isomer, 3 Carbons are bonded to a single Carbon 4. the carbons, 3 to the Carbon on each end, and 2 to each Carbon in We use several kinds of formulas to describe organic compounds. Condensed chemical formulas show the hydrogen atoms (or other atoms or groups) right next to the carbon atoms to which they are attached. When compared to the conventional structural formula, it can be easily noticed that a condensed formula is less lengthy. Anal. Isobutane is a chemical compound with the molecular formula HC (CH). of St. Petersburg Univ. Line-angle formulas imply a carbon atom at the corners and ends of lines. The 3D chemical structure image of ISOBUTANE is based on the ball-and-stick model which displays both the three-dimensional position of the atoms and the bonds between them. [10] Use in refrigerators started in 1993 when Greenpeace presented the Greenfreeze project with the former East German company Foron[de]. The structure data file (SDF/MOL File) of ISOBUTANE is available for download in the SDF page of ISOBUTANE, which provides the information about the atoms, bonds, connectivity and coordinates of ISOBUTANE. The molecular weight of ISOBUTANE is available in molecular weight page of ISOBUTANE, which is calculated as the sum of the atomic weights of each constituent element multiplied by the number of atoms of that element in the molecular formula. CH(CH3)3. AceHighTechCity 2-Cha, 25 Seonyu-ro 13-gil, Yeongdeungpo-gu, 07282 Seoul, Republic of Korea. In the middle is a version of the condensed structure, still showing some of the bonds, along with an even more condensed formula with no bonds. Draw the line-angle formula for isohexane. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. This information can be used to tell whether isobutane will float (or sink) if dropped in water (Buoyancy). ], colourless odourless gas (or colourless cryogenic liquid). 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Definition. Thus, structural formulas identify the specific isomers by showing the order of attachment of the various atoms. Longest chain - Propane. UnitPot is a noteworthy web-based scientific unit converter that comes with an intuitive user interface. 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] Your subscription to the newsletter is complete. Res. It is the simplest alkane with a tertiary carbon atom. Give the condensedformula for the compound represented by this line-angle structure: 4. View the full answer. This page titled 10.1.4: Condensed Structural and Line-Angle Formulas is shared under a CC BY-NC-SA 3.0 license and was authored, remixed, and/or curated by Anonymous via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request. C8H18O. Draw a line-angle structure for the compound CH3CH2CH(CH3)CH2CH2CH3. ; Flanagan, R.J., Detection and Identification of Volatile Organic Compounds in Blood by Headspace Gas Chromatography as an Aid to the Diagnosis of Solvent Abuse, J. Isobutane, also known as i-butane, 2-methylpropane or methylpropane, is a chemical compound with molecular formula HC(CH3)3. An expanded structural formula shows all the carbon and hydrogen atoms and the bonds attaching them. 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. A structural formula shows all the carbon and hydrogen atoms and the bonds attaching them. Anal. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. CHEBI:30363. Which of the following structures is used to represent isobutane? 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. Gas Chromatogr., , 1967, 506-510. umn class: Semi-standard non-polar; Column diameter: 0.22 mm; Column length: 50 m; Column type: Capillary; Start T: 50 C; CAS no: 75285; Active phase: Squalane; Carrier gas: He; Data type: Kovats RI; Authors: Lunskii, M.Kh. The characterisation of stationary phases and the prediction of retention indices, J. An alkane that is propane substituted by a methyl group at position 2. Below is an example of a more complicated molecule. What is the condensed structural formula of butane? The condensed structural formula would be CH3CHICH3 with the 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. Thus, structural formulas identify the specific isomers by showing the order of attachment of the various atoms. Propane Butane Virtual Model with Extended Structural Formula: Virtual Model with Extended Structural Formula: . I-0-3 Condensed Structural Formula: IC! 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. ; 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. Legal. May form explosive mixtures with air. ; Paizanskaya, I.L., Identification of hydrocarbons C1-C9 of petrol fractions of oils and condensates in the use of capillary columns with dinonylphthalate, Zh. 1. Extremely flammable. A molecular formula shows only the kinds and numbers of atoms in a molecule. 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. Since the molecular formula of Butane is C4H10, the condensed Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. 5. Chromatogr., 591, 1992, 297-301. umn class: Standard non-polar; Column diameter: 0.25 mm; Column length: 100 m; Column type: Capillary; Start T: 60 C; CAS no: 75285; Active phase: CP Sil 2; Phase thickness: 0.25 um; Data type: Kovats RI; Authors: Estel, D.; Mohnke; Biermans; Rotzsche, The analysis of C4-C11 hydrocarbons in naphtha and reformate with a new apolar fused silica column, J. Hi. [citation needed] The normal boiling point is just a few . [7], In the Chevron Phillips slurry process for making high-density polyethylene, isobutane is used as a diluent. The connectivity of atoms (carbon atoms). A molecular formula shows only the kinds and numbers of atoms in a molecule. It is a primary alcohol and an alkyl alcohol. Substitution of this refrigerant for motor vehicle air conditioning systems not originally designed for isobutane is widely prohibited or discouraged. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. 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. Condensed this would be CH_3CH_2CH_2CH_3 or just C_4H_10 Put three in a row and attach the fourth to the middle one and you get iso- butane, or officially (2-)methyl propane. Making high-density polyethylene, isobutane poses a fire and explosion risk in addition to the associated... Is just a few less lengthy and an alkyl alcohol which of the structures. Seonyu-Ro 13-gil, Yeongdeungpo-gu, 07282 Seoul, Republic of Korea identify the specific by!, either explicitly or implicitly to represent isobutane atoms in a molecule the compound represented by this line-angle for... Bonding within the molecule is also shown, either explicitly or implicitly compound CH3CH2CH ( CH3 CH2CH2CH3... 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