Fig. 6
From: Change is permanent: thoughts on the fading of cochineal-based watercolor pigments
Possible bonding modes for Al(III) and other metals in anthraquinones with multiple hydroxyl groups
Fig. 6 | Heritage Science
From: Change is permanent: thoughts on the fading of cochineal-based watercolor pigments
Possible bonding modes for Al(III) and other metals in anthraquinones with multiple hydroxyl groups
