SACCHARIC

ACID  , C6Hi0Os or HOaC[CH:OH]4COL;, in chemistry, a tetraoxydicarboxylic acid which exists in three stereoisomeric forms . The ordinary or dextrg (d). saccsharic.acid is formed in the oxidation of cane sugar, grape sugar, d-glu,conic acid and many other carbohydrates with nitric acid . It forms a., deliquescent mass . On standing, ,the syrupy acid gives the crystalline lactonic acid,: C6H8Q7 .. , Sodium amalgam reduces it to glucuronic acid, C6Hro0, or OHC[CH•OHkCO2H, whilst hydriodicacid reduces it to adipic acid, HO2C[CH,].4CO2H . Nitric acid oxidizes it to dextro-lrartaric acid and oxalic acid, Laevo (l)-saccharicacid is formed by oxidizing l-gluconic acid with nitric acid, whilst the inactive (d+l)-acid is obtained sim]lariyfroin inactive glucosnc acid . These acids closely resemble the d acid except, in their action on polarized light . Por their relations to the glucoses see SUGAR . Mucic acid (q.v.) is isomeric with these acids .