METHOD OF EXTRACTION OF 1-NAPHTHOLMONOSULFOACIDS FROM AQUEOUS SOLUTIONS

摘要

FIELD: chemical technology. SUBSTANCE: method involves extraction of 1-naphtholmonosulfoacids with an organic solvent from aqueous solutions. Extraction is carried out with a mixture nonane/butanol-1 at ratio (43-16): (57-84) wt. -% at pH value of an aqueous solution 3-5 in the presence of a desalting agent. EFFECT: improved method of 1-naphtholmonosulfoacids extraction, increased extraction degree of the end product. 3 tbl, 24 ex