ANTHRAQUINONE

n. ANTHRACENE and QUINONE. Fr., anthraquinone. Ger., A nth rach in on. It., antra chinone. A substance having the same relation to anthracene that quinone has to benzene; having, therefore, the composition C,4H,2= CsH,G9C,Hy. It forms shining yellow acicular crystals almost insoluble in alcohol and in ether. [B,4.] —A’car bonie acid. A monobasic crystalline acid, C,4H,0.- CO.OH = C,5Hg0,, being carbonic acid with a molecule of hydroxy] replaced by the anthraquinone residue, C,,H,O,. [B, 4.]—A’disulphonic acid. Fr., acide anthraquinone-disulfonique, Ger., DAR aca TenOnieatlfonstire’ Syn.: disuiphanthraquinonic acid. A dibasic acid formed by the action of an exce of sulphuric acid on a.; C,,H,(SO2-OH),.02 = C,4H28,0g- [B, 4.J—A’quinaldine. Ger., Anthrachinonchinaldin. A derivative of a, having the constitution C,7 H,9N(CH,). [B,79.]—A’quinaldinesulphonie acid. Ger., Anthrachinonchinaldinsulfonsäure. A monobasic acid of the constitution C,7H,N(CH3(SO,.OH). [B,79.]—A’quinoline. Ger., A nth rach in on chino lin. A substance forming yellow acicular or prismatic crystals, C,7H,NO,. [B,79.]—A’sulphonic acid. Ger., Anthrachinonsulfonsäure, “A monobasic acid, C,4H7(S02.0H)0, = C,«H;SO,, formed by heating a. with sulphuric acid.” [B, 4.]