Explanatory notes
… odour. (B) POLYNUCLEAR MONOPHENOLS (1) Naphthols (C 10 H 7 OH)* . These are the phenols derived from … in chemical analysis, in medicine, photography, etc. (10) Hydroxyhydroquinone (1,2,4-trihydroxybenzene). … darkens on exposure to light. (11) Dihydroxynaphthalenes (C 10 H 6 (OH) 2 ). A group of ten compounds obtained by …