This study reveals that heating lead palmitate in linseed oil leads to the formation of mixed lead palmitate–stearate compounds and a metastable high-temperature polymorph with unique structural features. These transformations, even at moderate heating, suggest complex chemical changes that may contribute to long-term degradation in oil paintings. The findings emphasize the need for careful temperature control during conservation treatments involving lead-based materials.
https://doi.org/10.1039/D4DT03267E
