title: A note on the colour reaction between piperazine and the sodium salt of 1.2-naphthoquinone-4-sulphonic acid.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D003116:Color; D009285:Naphthoquinones; D010879:Piperazines; D013451:Sulfonic Acids
chemical_list: D009285:Naphthoquinones; D010879:Piperazines; D013451:Sulfonic Acids