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Iron gall ink (also known as common ink, standard ink, oak gall ink or iron gall nut ink) is a purple-black or brown-black ink made from iron salts and tannic acids from vegetable sources. It was the standard ink formulation used in Europe for the 1400-year period between the 5th and 19th centuries, remained in widespread use well into the 20th ...
The iron-based atramentum called iron gall ink was in popular use from about the 12th to 19th century. It is currently a subject of conservation effort since many valuable collections are written using it but it causes ink corrosion.
However, iron gall ink is corrosive and damages paper over time (Waters 1940). Items containing this ink can become brittle and the writing fades to brown. The original scores of Johann Sebastian Bach are threatened by the destructive properties of iron gall ink. The majority of his works are held by the German State Library, and about 25% of ...
Iron gall ink was used in fountain pens when they were invented but has the disadvantage of causing corrosion to metal parts. Modern formulations of iron gall ink are somewhat less corrosive and are still occasionally used in applications that require permanence. Bottle of green ink. Red inks usually contain the dye eosin. Blue inks often ...
Traditional iron gall inks intended for dip pens are not suitable for fountain pens as they will corrode the pen (a phenomenon known as flash corrosion) and destroy the functionality of the fountain pen. [83] Instead, modern surrogate iron gall formulas are offered for fountain pens.
This iron gall ink recipe is taken from the Household Cyclopedia of General Information, published in 1881. It is not in common use now, though the preparation of inks with similar methods was common at one time. Recipe for one imperial gallon (4.5 L) of ink: 12 ounces (340 g), nut-galls; 8 ounces (230 g), sulfate of indigo; 8 ounces (230 g ...
The history of the Sam Houston Bible being used at Ken Paxton's impeachment trial is a little mysterious.
Not only does it mold quickly in high humidity environments, but early forms of ink that were commonly used on papyrus could simply be washed off without leaving a trace. It is believed that "Iron gall inks were devised to overcome this disadvantage," however even these inks can be wiped off fairly thoroughly if they are scrubbed (Langwell 43).