Ferrotannin

Description

A complex natural black dye fixed by the addition of iron salts and oak gall extract. Ferrotannin complexes are commonly found in iron-gall inks.

Resources and Citations

• J. Thornton, 'The Use of Dyes and Colored Varnishes in Wood Polychromy', Painted Wood: History and Conservation, The Getty Conservation Insitute, Los Angeles, 1998