Abstract
This article introduces the results of a monographic research, never made before, about the modernist chemistry of Ferran Grau Ynglada, in Barcelona. It was opened in 1900, at the peak of modernism, in 1907 it was partly burned in due to a fire started in the annexed laboratory. Alexandre de Riquer was responsible for its decoration and relied on some famous Catalan artists, like Gaspar Homar and the Rigalt firms. The article offer accurate detail about the art forms that conform the chemistry, both inside and outside: furniture, stained glass, ceramic, paint and hydraulic floor. Moreover, it analyses its iconographic and symbolic program, through exploring the connections between chemistry, medicine and the wide range of modernist ornaments.