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In testing, isocetane (2,2,4,4,6,8,8-heptamethylnonane or HMN) replaced 1-methylnaphthalene as the low cetane number reference fuel in 1962 for reasons of better oxidation stability and ease of use in the reference engine. The scale is unchanged, as isocetane's cetane number is measured at 15, referenced to 1-methylnaphthalene and cetane. [3]
Methylnaphthalene may refer to: 1-Methylnaphthalene; 2-Methylnaphthalene This page was last edited on 12 May 2022, at 14:55 (UTC). Text is available under the ...
Isocetane replaced 1-methylnaphthalene in 1962 as the lower reference for cetane number (1-methylnaphthalene has cetane number zero) owing to the oxidation instability and difficulty of use of 1-methylnaphthalene in the reference engine. [3] [4]
2-Methylnaphthalene is a polycyclic aromatic hydrocarbon (PAH). On February 22, 2014, NASA announced a greatly upgraded database [ 1 ] [ 2 ] for detecting and monitoring PAHs, including 2-methylnaphthalene, in the universe .
The bonds C1−C2, C3−C4, C5−C6 and C7−C8 are about 1.37 Å (137 pm) in length, whereas the other carbon–carbon bonds are about 1.42 Å (142 pm) long. This difference, established by X-ray diffraction , [ 21 ] is consistent with the valence bond model in naphthalene and in particular, with the theorem of cross-conjugation .
1-Methylnaphthalene; 2-Methylnaphthalene This page was last edited on 17 August 2019, at 01:16 (UTC). Text is available under the Creative Commons Attribution ...
Smartwatches are a hot-ticket gift over the holidays, but a new study might have you rethink how you strap the device to your wrist in the future.
Synonyms CAS number; C 11 H 6 O 10: benzenepentacarboxylic acid: 1585-40-6 C 11 H 8 CrO 4: ... methylnaphthalene: 1321-94-4 C 11 H 10 FeO 2: ferrocene carboxylic acid ...