FIELD: chemistry.
SUBSTANCE: method of extracting copper (II) ions from ammonia solutions using an extractant consisting of a mixture of 1-phenyl-3-heptyl-1,3-propanediol and 2-ethylhexanoic acid in amount of 5-10 mol % of the content of 1-phenyl-3-heptyl-1,3-propanediol in an organic solvent which is immiscible with water.
EFFECT: invention shortens the copper ion re-extraction time.
3 tbl, 2 ex
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