FIELD: chemistry.
SUBSTANCE: invention relates to a method of waste oil purification by the preliminary heating of oil and following separation of pollutants, with the addition into the oil of a mixture of isopropyl alcohol and carbamide in a ratio of 1:1, taken in a quantity of 1.0%, counted per dry carbamide from the weight of the oil to be purified.
EFFECT: increased quality of waste oil purification with the simultaneous simplification of the technological process.
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