Dibenzothiophenes physical properties

Dibenzene chromium(O), physical properties, 6 528t Dibenzo-crown-6, 5 710 molecular formula, 5 713t Dibenzo[18]crown-6, 7 576 24 40, 41 Dibenzo[30]crown-10, 24 43 Dibenzocrown ethers, 24 50 Dibenzofurans, 27 152 Dibenzopyrenquinone dyes, 9 336 Dibenzothiophenes, 27 152 Dibenzoyl peroxide (BPO), 74 283-284 78 427... 

Physical Properties of Benzo[hJ thiophens. The aromatic electronic delocalization in benzo[h] thiophen has been calculated.The m.c.d. spectra of benzo[h]thiophen and dibenzothiophen have been analysedChemical thermodynamic properties of benzo[h]thiophen and other condensed systems have been determined. The crystal structures of 5-nitroso-4-(phenylethyl)benzo[h] thiophen, 1,2,3,5-tetramethylbenzo[h] thiophenium tetrafluoroborate, " and a spiro-benzo[Z)]thieno[2,l-h]pyran have been determined. 

A column performance test is used to ensure the proper condition of columns and the stability of retention parameters. Because CWC-related chemicals greatly differ both chemically and physically from each other, the test chemicals have been selected so that their physical, chemical, and retention properties are different, and so that they elute evenly over the whole chromatogram. The use of the following chemicals in a column performance test is recommended trimethylphosphate, 2,6-dimethylphenol, 5-chloro-2-methylaniline, tri-n-butylphosphate, dibenzothiophene, malathion, and methyl stearate. The concentration of test chemicals depends on the sensitivity of detectors. The... 

Ho (2003) applied partial least squares method on a multivariate nXp matrix denoted by X = where n = 13 was the number of feedstocks and p = 24 was the number of descriptors, that is, physical and chemical properties such as sulfur content, nitrogen content, aromatics content, API gravity, and dibenzothiophenes content. He arrived at an overall property-reactivity correlation, which allowed gaining quantitative understanding of feedstock effects on HDS of middle distillates. 

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