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Table 5 Infrared bands for Iberian inks and the iron-gallate and tannate precipitates

From: New insights into iron-gall inks through the use of historically accurate reconstructions

  1. Shadings and assignments for iron-gall inks are based on Falcão and Araújo [36, 37]: grey shading, characteristic common bands for “tannins”; orange shading, vibrations presented by hydrolysable tannins; blue shading, distinctive bands, marker bands for gallotannins
  2. str stretching