Fig. 12From: The synthesis characterization of historical novel azo pigments: implications for conservation sciencePlot of visible reflectance for di-substituted Naphthol AS-G diazo-reaction products. Substitution: A 4-methoxy-/3-CN-; B 4-methoxy-/2,4-dinitro-; C 4-methoxy-/4-trifluoromethyl-; D 4-methoxy-/2,4-dichloro-; E bis-(4-methoxy-)Back to article page