Process for industrial manufacture of sodium...

Details Process for industrial manufacture of sodium... Process for industrial manufacture of sodium...

C - Chemistry, Metallurgy

07

C

260/516.6

C07C 51/367 (2006.01) C07C 51/41 (2006.01) C07C 59/52 (2006.01)

Patent

CA 2002139

TITLE OF THE INVENTION "New process for industrial manufacture of sodium parahydroxymandelate" ABSTRACT This process is characterized by the fact that glyoxylic acid in aqueous solution is reacted with an excess of phenol in the presence of a tertiary amine, insoluble or slightly soluble in water and liquid at ambient temperature, in particular tributylamine or triisooctyl- amine, then the parahydroxymandelic acid thus obtained is salified with sodium hydroxide in aqueous solution. The reaction of the glyoxylic acid with phenol is carried out at a temperature between 15°C and 80°C.

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