Sentence Examples


  • When distilled over lead oxide, it forms diphenylene oxide, (C 6 H 4) 2 O: and when heated with oxalic acid and concentrated sulphuric acid, it forms aurin, C19H1403.
  • Fischer (Ber., 1880, 13, p. 2204) as follows: Nitrous acid converts pararosaniline into aurin, which when superheated with water yields para-dioxybenzophenone.
  • As the hydroxyl groups in aurin correspond to the amino groups in pararosaniline, two of these in the latter compound must be in the para position.
 
 

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