FIELD: chemistry.
SUBSTANCE: invention pertains to the method of obtaining formaldehyde raw material, which involves separation of the contained formaldehyde product from a formaldehyde solution, water and methanol, where the contained formaldehyde product has considerably lower content of water than the formaldehyde solution. Separation is done by distillation of the formaldehyde solution in the presence of a water absorbing compound. The water absorbing compound is chosen from a group, consisting of saturated or unsaturated carboxylic acid, ester and carbonyl compound.
EFFECT: allows for obtaining a formaldehyde product with low water content.
8 cl, 1 dwg, 2 ex
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