Online Encyclopedia


Online Encyclopedia
Originally appearing in Volume V23, Page 970 of the 1911 Encyclopedia Britannica.
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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.
End of Article: SACCHARIC ACID

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