FIELD: organic chemistry, chemical technology. SUBSTANCE: invention relates to synthesis of m-haloidphenols of the general formula: 
where X is Br, Cl used in production of dyes, medicinal agents, phenolformaldehyde resins. Method is performed by diazotization of m-aminophenol as meta-derivative of aniline with sodium nitrite. Diazotization is carried out in mixture of hydrohalic acid and acetone. Acetone is taken in the amount 500-1000 vol. p. per 1 mole of m-aminophenol. Obtained diazonium salt is decomposed in the presence of monovalent copper halide at 30-35 C. EFFECT: development of new industrial method of production of m-haloidphenol, broadened raw base. 2 cl
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