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Encyclopedia Britannica - Main :: MAL-MAR |
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MANDELIC ACID (Phenylglycollic Acid), C8H803 C6H5CH(OH)000H, an isomer of the cresotinic and oxymethylbenzoic acids. Since the molecule contains asymmetric
carbon atom , the acid exists in three forms, one being an inactive " racemic " mixture, and the other two being optically active forms. The inactive variety is known as paramandelic acid . It may be prepared by the action
compound of benzaldehyde and hydrocyanic acid:C5H5CHO+HCN+HC1+2H2O= C5H5CHOHCOOH+NH4CI, (F. L. Winckler, Ann., 1836, 18, 310), by boiling phenylchloracetic acid with alkalis (A. Spiegel, Ber., 1881, 14, 239), by heating
action
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