Simulation confirms literature data regarding the higher yield of light fractions (density ρ≤1.28-1.30 g/cm~3) from reduced coal than slightly coal. The predominance of light fractions with anelevated hydrogen content in the coal's organic mass facilitates the formation of physicochemical propertiesassociated with high degrees of reduction. The degree of reduction is related to the content of such fractionsin the coal. Thins evidently the case for a whole range of caustobioliths and is especially pronounced for oil,whose value is directly related to the content of light fractions (ρ≤0.84-0.87 g/cm~3).
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