Definition, Betydelse & Anagram | Engelska ordet HEPTANE

Definition av HEPTANE

1. (kemi) heptan

Exempel på hur man kan använda HEPTANE i en mening

• When used as a test fuel component in anti-knock test engines, a 100% heptane fuel is the zero point of the octane rating scale (the 100 point is 100% iso-octane).
• Several entrainers can be used for this specific process: benzene, pentane, cyclohexane, hexane, heptane, isooctane, acetone, and diethyl ether are all options as the mixture.
• Rubber cement (cow gum in British English) is an adhesive made from elastic polymers (typically latex) mixed in a solvent such as acetone, hexane, heptane or toluene to keep it fluid enough to be used.
• In reality, most fuels consist of a combination of heptane, octane, a handful of other alkanes, plus additives including detergents, and possibly oxygenators such as MTBE (methyl tert-butyl ether) or ethanol/methanol.
• Additionally, the amount of heptane insolubles present and the fraction of light components in the coker feed contribute.
• The two heptane radical rings then untwist to an unstrained conformation, and finally the dimer fragments back into two cis-cycloheptene molecules.
• Since the stationary phase is hydrophilic in this technique, and the mobile phase is non-polar (consisting of organic solvents such as hexane and heptane), biomolecules with hydrophilic properties in the sample adsorb to the stationary phase strongly.
• 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).
• Isothermic annealing of the supersaturated rapidly frozen solutions of dibenzofuran in heptane was performed, and it was shown that the return of the metastable system to equilibrium in time reasonable for laboratory observation required the annealing temperature to be close to the melting temperature of the metastable frozen solution.
• These hydrocarbons include hexane, heptane, isooctane (CN 2901 10 for most saturated acyclic hydrocarbons), petroleum ether (CN 2710 12 25), cyclohexane (CN 2902 11), benzene (CN 2902 20), toluene (CN 2902 30) and xylenes (o-Xylene: CN 2902 41, m-Xylene: CN 2902 42, p-Xylene: CN 2902 43, and a mix of these isomers: CN 2902 44), among others.
• A wide array of biphasic solvent mixtures are available to the CCC practitioner including the combination n-hexane (or heptane), ethyl acetate, methanol and water in different proportions.
• The distinction between the two is that asphaltenes are insoluble in an excess of heptane (or pentane) whereas resins are miscible with heptane (or pentane).
• This included the conversion of aliphatic acids (such as heptanoic and octanoic acids) to alkanes (namely hexane and heptane), a reaction in which palladium catalysts produced the best results.
• The division between the two classes is not perfect: some hexane, and heptane remain in the gas to be separated out as NGLs, while some butane and pentane, may separate out with the condensate.
• Tetrolic acid is highly soluble in polar solvents (water, ethanol) and can be recrystallized from non-polar solvents (such as heptane, hexane or toluene).
• A little bit lower naphthas exit (naphtha can be described as crude gasoline; there is light naphtha like pentane (C5), hexane (C6) and heptane (C7) and heavy naphtha like octane (C8) up to dodecane (C12)).
• 1,2,6-Hexanetriol is a clear, odourless, viscous, high-boiling and hygroscopic liquid, which is miscible with water and polar organic solvents but immiscible with non-polar solvents such as benzene, diethyl ether or heptane.

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