Table 1 The constituents of iron gall inks (HERO232)
From: Changes in color and iron ions of commercial iron gall inks after artificial aging
Ingredients | Content (g) | Ingredients | Content (g) | |
|---|---|---|---|---|
Iron gall ink | Tannin | 24–25 | Blue pigments | 4–5 |
Iron (II) | 30 | Water | 1000 | |
Hydrochloric acid | 5–6 | Gum Arabic | 10 | |
Gallic acid | 7–8 |