CPC Subgroup
C22B 3/36 Heterocyclic compounds (C22B3/34 takes precedence)
Full Title
Extraction of metal compounds from ores or concentrates by wet processes > Treatment or purification of solutions, e.g. obtained by leaching (C22B3/18 takes precedence) > by liquid-liquid extraction using organic compounds > Heterocyclic compounds (C22B3/34 takes precedence)
1 direct subcode
Child Classifications
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