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The influence of the production conditions for rapeseed and soybean oils obtained by extraction in the system “solid – liquid” on the qualitative composition of the obtained vegetable oils has been studied. The main chemical values (acid value, iodine value, ester value, saponification value) and optical properties (refractometric refractive index and UV-Vis spectroscopy) for rapeseed and soybean oils obtained by extraction using methylene chloride as a solvent from different plant raw materials (grade of grinding is 0.2, 0.5 and 1.0 mm) and mixtures of crushed grain fractions have been determined. It has been shown that the grade of grinding of the raw material affects the quality of the obtained product.

Sorption properties of materials based on sodium liquid glass modified by polyvinyl alcohol and polyvinylpyrrolidone on regarding to different acid-base indicators were investigated. The effect of the nature of metal and polymer modifier (polyvinyl alcohol and polyvinylpyrrolidone) on the amount of active centers and specific active surface area of such material was determined. Moisture absorption of modified and not modified silicate materials was founded. The effect of Ni-containing polymer-silicate materials on the speed of curing of compositions based on unsaturated polyester resins was determined.

The article presents results of the study of soybean and rapeseed vegetable oils’ qualitative composition dependence on the degree of raw materials grinding obtained by extraction in a stationary layer in a Soxhlet apparatus using methylene chloride as a solvent. A number of experiments were performed to determine the optical properties of oil by infrared spectroscopy. The absorption spectra for different oil samples are present in the article. The obtained results were compared with previous refractometric and UV-Vis spectroscopy studies.