Tabela de Formulações quimicas para patinas em ligas de cobre / Table of chemical formulations for patinas on copper alloys/ Tableau des formulations chimiques des patines sur alliages cuivreux

This research work was developed as part of my doctoral thesis on the artistic production techniques of bronze sculptures by Auguste Rodin – at DCR-FCT-NOVA, funded by the Fundação para a Ciência e Tecnologia.

The text presented elwere sought to focus on the gap in knowledge about chemical formulations for the production of colored oxidized surfaces on copper alloy sculptures between 1840-1917. Here we carry out a literature review, and propose a synthesis, in the form of tables, of the possible formulations in that period (systematization of secondary data), in order to contribute to the understanding of the artistic production techniques of these surface finishes.

This knowledge is essential for a critical analysis of the conservation of sculptures in copper alloys from this period, and essential to be able to make any kind of analogy based on the material characterization data of works of art from this period. The information conveyed here brings light to methodologies in the 19th century for obtaining the 7 main colors, will allow discussing terminology issues related to chemical formulation in the 19th century, as well as providing secondary data that will enable the material characterization of the original surface of the sculptures in “ patinated bronze”.

we present here a set of 4 primary data systematization tables on which the production of the text is based. The tables were created in Excel, because of the estension of the data present. The text is in Englis, french and Portuguese

Table 1 Systematization of transcribed wordings (original data); 

Table 2: systematization of standardized formulations

Table 3: glossary plus Bibliographical references/ Reference Bibliographiques / Referências Bibliográficas

table 4: Sources / Cases / resume

Table 5:Bronzeurs / Metteurs en couleurs

Table 6: measures and equivalences