| abstract |
(57) [Summary] [Object] To provide a method for directly producing free glycolic acid by a simple method using glyoxal as a starting material. [Constitution] Glyoxal solution in the periodic table No. 12 A method for producing glycolic acid, which comprises adding a hydroxide or an alkoxide compound of an element of Group 13, Group 13 or Group 14 as a catalyst and heating to 50 ° C. or higher. |