METHOD FOR PREPARING AND ISOLATING SALICYLIC ACID Russian patent published in 2007 - IPC C07C65/10 C25B3/00 C07C51/02

Abstract RU 2293076 C1

FIELD: chemical technology.

SUBSTANCE: invention relates to the improved method for synthesis and isolation of salicylic acid by electrolysis of salicylate sodium in a three-chamber electrolyzer. Method involves additional addition of sodium sulfite solution into a middle chamber and process is carried out at current density 0.1-0.3 A/cm² wherein steel-3 is used as a cathode material. Invention can be used in synthesis of dyes, preserving foodstuffs, qualitative analysis of chemical substances in analytical chemistry, in pharmaceutical, medicinal, textile and food industry with the enhanced effectiveness. Invention provides enhancing output of the process and using steel-3 instead high-expensive platinum electrode.

EFFECT: improved method of synthesis and isolation.

3 ex

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RU 2 293 076 C1

Authors

Aliev Zazav Mustafaevich

Magomedova Zarema Magomedovna

Dates

2007-02-10—Published

2005-11-28—Filed