Magna Carta – Ink Making Information
Procedure
1. In a beaker put about one half of a teaspoon of Iron Sulphate. Add water to the
beaker to a depth of about 1 cm and stir until the solid has dissolved.
2. In another beaker put about a half teaspoon of Tannic Acid and the same amount of
Gum Arabic. Add water to the beaker to a depth of about 1 cm and stir until the
solid has dissolved.
3. Mix the contents of the two beakers, stir and allow to stand for a few minutes.
4. Your ink is now ready for use.
Safety Information
Substance
Iron(II) sulphate-7-Water
Wine tannin (tannic acid)
Gum Arabic
Hazard
Harmful if swallowed. May be
irritating to eyes and skin.
See attached information
Food grade – no significant
hazard
Food grade – no significant
hazard
Control
Prevent swallowing. Wash
hands after use. Prevent
contact with eyes. Avoid
contact with skin.
55B Iron(II) salts (See also 55A & 55C)
Iron(II) sulfate(VI)-7-water Hydrated ferrous sulfate; ferrous sulfate heptahydrate FeSO4.7H2O
Diammonium iron(II) sulfate(VI)-6-water Ferrous ammonium sulfate (NH4)2Fe(SO4)2.6H2O
Harmful H R22: Harmful if swallowed. Solutions equal to or stronger than 1 mol dm-3 should be
labelled HARMFUL.
WEL (mg m-3): 1 (LTEL), 2 (STEL) as iron.
Store: GIn
These compounds are oxidised
in moist air and turn brown.
Disposal: W1, W7
W7: Dilute to less than 0.2 mol dm-3 before pouring down a foul-water drain.