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3,3-dimethylhexane
3,3-Dimethylhexane is a colourless, odourless liquid, chemical compound in the family of hydrocarbons which has a formula of C8H18. It is an isomer In chemistry, isomers are molecules or polyatomic ions with identical molecular formulae – that is, same number of atoms of each element – but distinct arrangements of atoms in space. Isomerism is existence or possibility of isomers. ... of octane. References Hydrocarbons {{Hydrocarbon-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Octane
Octane is a hydrocarbon and an alkane with the chemical formula , and the condensed structural formula . Octane has many structural isomers that differ by the amount and location of branching in the carbon chain. One of these isomers, 2,2,4-trimethylpentane (commonly called iso-octane) is used as one of the standard values in the octane rating scale. Octane is a component of gasoline (petrol). As with all low-molecular-weight hydrocarbons, octane is volatile and very flammable. Use of the term in gasoline "Octane" is colloquially used as a short form of "octane rating," particularly in the expression "high octane". "Octane rating" is an index of a fuel's ability to resist engine knock in engines having different compression ratios, which is a characteristic of octane's branched-chain isomers, especially iso-octane. The octane rating of gasoline is not directly related to the power output of an engine. Using gasoline of a higher octane than an engine is designed for cannot inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2,2-Dimethylbutane
2,2-Dimethylbutane, trivially known as neohexane, is an organic compound with formula C6H14 or (H3C-)3-C-CH2-CH3. It is therefore an alkane, indeed the most compact and branched of the hexane isomers — the only one with a quaternary carbon and a butane (C4) backbone. Synthesis 2,2-Dimethylbutane can be synthesised by the hydroisomerisation of 2,3-dimethylbutane using an acid catalyst. It can also be synthesised by isomerization of ''n''-pentane in the presence of a catalyst containing combinations of one or more of palladium, platinum, rhodium and rhenium on a matrix of zeolite, alumina, silicon dioxide or other materials. Such reactions create a mixture of final products including isopentane, ''n''-hexane, 3-methylpentane, 2-methylpentane, 2,3-dimethylbutane and 2,2-dimethylbutane. Since the composition of the final mixture is temperature dependant the desired final component can be obtained choice of catalyst and by combinations of temperature control and distillations. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2,3-Dimethylbutane
2,3-Dimethylbutane is an isomer of hexane. It has the chemical formula In chemistry, a chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, ... (CH3)2CHCH(CH3)2. It is a colorless liquid which boils at 57.9 °C. References Alkanes {{Hydrocarbon-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2,3,3-Trimethylpentane
2,3,3-Trimethylpentane is a chemical compound in the family of hydrocarbons which has a formula of C8H18. It is an isomer In chemistry, isomers are molecules or polyatomic ions with identical molecular formulae – that is, same number of atoms of each element – but distinct arrangements of atoms in space. Isomerism is existence or possibility of isomers. ... of octane. References {{DEFAULTSORT:Trimethylpentane, 2,3,3- Alkanes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triptane
Triptane, or 2,2,3-trimethylbutane, is an organic chemical compound with the molecular formula C7 H16 or (H3C-)3C-C(-CH3)2H. It is therefore an alkane, specifically the most compact and heavily branched of the heptane isomers, the only one with a butane (C4) backbone. Triptane is commonly used as an anti-knock additive in aviation fuels. See also *List of gasoline additives Petrol additives increase petrol's octane rating or act as corrosion inhibitors or lubricants, thus allowing the use of higher compression ratios for greater efficiency and power. Types of additives include metal deactivators, corrosion inhibitor ... References Hydrocarbons Alkanes {{Hydrocarbon-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tetramethylbutane
Tetramethylbutane, sometimes called hexamethylethane, is a hydrocarbon with formula C8H18 or (H3C-)3C-C(-CH3)3. It is the most heavily branched and most compact of the many octane isomers, the only one with a butane (C4) backbone. Because of its highly symmetrical structure, it has a very high melting point and a short liquid range; in fact, it is the smallest saturated acyclic hydrocarbon that appears as a solid at a room temperature of 25 °C. (Among cyclic hydrocarbons, cubane, C8H8 is even smaller and is also solid at room temperature.) It is also the most stable C8H18 isomer, with a heat of formation lower than that of ''n''-octane, a fact that has been attributed to stabilizing dispersive interactions (electron correlation) between the methyl groups (protobranching). The compound can be obtained by reaction of Grignard reagent tert-Butylmagnesium bromide with ethyl bromide, or of ethylmagnesium bromide with ''tert''-butyl bromide in the presence of manganese ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tetraethylmethane
Tetraethylmethane is a branched alkane with 9 carbon atoms. It is a highly flammable and volatile liquid at room temperature. It is one of the isomers of nonane. References See *Neopentane Neopentane, also called 2,2-dimethylpropane, is a double-branched-chain alkane with five carbon atoms. Neopentane is a flammable gas at room temperature and pressure which can condense into a highly volatile liquid on a cold day, in an ice bath, ... External links * {{cite journal , doi = 10.1021/jo981779m , title = Molecular Structure of 3,3-Diethylpentane (Tetraethylmethane) in the Gas Phase as Determined by Electron Diffraction and ab Initio Calculations , journal = The Journal of Organic Chemistry , volume = 64 , issue = 12 , pages = 4226–4232 , year = 1999 , last1 = Alder , first1 = Roger W. , last2 = Allen , first2 = Paul R. , last3 = Hnyk , first3 = Drahomír , last4 = Rankin , first4 = David W. H. , last5 = Robertson , first5 = Heather E. , last6 = Smart , f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2,2,4-Trimethylpentane
2,2,4-Trimethylpentane, also known as isooctane or iso-octane, is an organic compound with the formula (CH3)3CCH2CH(CH3)2. It is one of several isomers of octane (C8H18). This particular isomer is the standard 100 point on the octane rating scale (the zero point is ''n''-heptane). It is an important component of gasoline, frequently used in relatively large proportions (around 10%) to increase the knock resistance of fuel. Strictly speaking, if the standard meaning of ‘iso’ is followed, the name ''isooctane'' should be reserved for the isomer 2-methylheptane. However, 2,2,4-trimethylpentane is by far the most important isomer of octane and historically it has been assigned this name. Production Isooctane is produced on a massive scale in the petroleum industry by alkylation of isobutene with isobutane. This process is conducted in alkylation units in the presence of acid catalysts. It can also be produced from isobutylene by dimerization using an Amberlyst catalyst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2,3,4-Trimethylpentane
2,3,4-Trimethylpentane is a branched alkane In organic chemistry Organic chemistry is a subdiscipline within chemistry involving the science, scientific study of the structure, properties, and reactions of organic compounds and organic materials, i.e., matter in its various forms tha .... It is one of the isomers of octane. References External links2,3,4-Trimethylpentaneat environmentalchemistry.com {{DEFAULTSORT:Trimethylpentane, 2,3,4- Alkanes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tetra-tert-butylmethane
Tetra-''tert''-butylmethane is a hypothetical organic compound with formula C17H36, consisting of four ''tert''-butyl groups bonded to a central carbon atom. It would be an alkane, specifically the most compact branched isomer of heptadecane. Some calculations suggests this compound cannot exist due to the steric hindrance among the closely packed ''tert''-butyl groups, which would make it one of the smallest, if not the smallest itself, saturated and acyclic hydrocarbon that cannot exist. Other calculations suggest that the molecule would be stable, with the C–C bonds to the central ("methane") carbon having a length Length is a measure of distance. In the International System of Quantities, length is a quantity with dimension distance. In most systems of measurement a base unit for length is chosen, from which all other units are derived. In the Inte ... of 166.1 pm — longer than the typical C−C bond in order to reduce steric effects, but still shorter than ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2,3-Dimethylhexane
2,3-Dimethylhexane is a structural isomer In chemistry, a structural isomer (or constitutional isomer in the IUPAC nomenclature) of a compound is another compound whose molecule has the same number of atoms of each element, but with logically distinct bonds between them. The term met ... of octane. References {{DEFAULTSORT:Dimethylhexane, 2,3- Alkanes Hydrocarbons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2,5-Dimethylhexane
2,5-Dimethylhexane is a branched alkane used in the aviation industry in low revolutions per minute helicopters. As an isomer In chemistry, isomers are molecules or polyatomic ions with identical molecular formulae – that is, same number of atoms of each element – but distinct arrangements of atoms in space. Isomerism is existence or possibility of isomers. ... of octane, the boiling point is very close to that of octane, but can in pure form be slightly lower. 2,5-Dimethylhexane is moderately toxic. References {{DEFAULTSORT:Dimethylhexane, 2,5- Alkanes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
