Capillary gas chromatography and mass spectrometry have been used for identification of most main high-boiling components of fraction of pyrolysis oil (boiling point 250 to 350° C under normal pressure) especially those boiling above the b.p. of acenaphthene. All methyl homologues of acenaphthene, phenanthrene, some isomeric methylfluorenes, trimethyl- and methylethyl naphthenes, phenylnaphthalenes, dimethylbiphenyls, benzindans, methylbenzindans and other aromatic hydrocarbons have been prepared as standards. In connection with the preparation of some trimethyl- and methylethylnaphthalenes a discussion is presented of the course of chloromethylation and acetylation of 1- and 2-methyl- and 2-ethylnaphthalenes. Content of methyl-homologues of some hydrocarbons (acenaphthene, fluorene, phenanthrene, and anthracene) in the high-boiling fraction of pyrolysis oil has been compared with that present in similar fraction of coal tar.

Using synthetic, chromatographic and spectral methods, we studied the side reactions accompanying the preparation of di-2-ethylhexyl phthalate from phthalic anhydride and 2-ethyl-hexane-1-ol in the presence of catalytic amounts of tetra-n-butyl titanate.The catalyst proper was titanium(IV) mono-2-ethylhexyl phthalate. The possibility of a simultaneous gas-chromatographic quantitative determination of mono-2-ethylhexyl phthalate, di-2-ethylhexyl phthalate, 2-ethylhexane-1-ol and tetra-n-butyl titanate, reported in the literature, has been refuted. In the esterification catalysed by hydrated titanium dioxide homogeneous catalysis by the formed organotitanate was dominating. The dissolving of hydrated titanium dioxide in the esterification of phthalic anhydride with 2-ethylhexane-1-ol was studied polarographically.

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Capillary gas-liquid chromatography with three columns impregnated with non-polar, medium and polar stationary phases has been used for determination of the Kováts indexes of methylethyl- and trimethylbiphenyls carrying the alkyl groups in the both rings. From elution data of isomeric methyl- and ethylbiphenyls the increments of methyl and ethyl groups have been determined, the theoretical Kováts indexes of the mentioned methylethyl- and trimethylbiphenyls have been calculated, and possibility of prediction and assessment of the Kováts indexes of these substances has been discussed. Parameters of the straight line given by the relation IApiez.L = k . Istat.phase(2) + q have been determined, and correlation coefficients of these relations have been estimated.