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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 ...
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 ...
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 ...
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 ...
Alloys of gold can be subject to corrosion, with can cause darkening of the metal, reaction with the adhesives and other paint, and staining of the paper. This is an inherent vice of illuminations done with pure silver as well. Regardless of the care and treatment, silver corrodes and darkens over time.
Tannic acid chemically converts the reddish iron oxides into bluish-black ferric tannate, a more stable material. [2] The second active ingredient is an organic solvent such as 2-butoxyethanol (ethylene glycol monobutyl ether, trade name butyl cellosolve) that acts as a wetting agent and provides a protective primer layer in conjunction with an ...
It can use waterproof, pigmented, iron gall ink, particle-and-binder-based inks, such as India ink, drawing ink, and acrylic inks with ease; while fountain pens generally must use water based inks, require thorough and frequent cleaning to prevent clogging when used with pigmented or waterproof inks and may corrode when used with iron gall ink ...
A fountain pen is a writing instrument that uses a metal nib to apply water-based ink, or special pigment ink—suitable for fountain pens—to paper.It is distinguished from earlier dip pens by using an internal reservoir to hold ink, eliminating the need to repeatedly dip the pen in an inkwell during use.