Eisengallustinte is one since that 3. Century v. Chr. common document-genuine black ink, which can be written well with steel feathers/springs, however badly with stylographs (Verstopfungsgefahr).

The production in the Middle Ages came from iron (II) sulfate (iron vitriol), water and rubber arabicum. The dried are zerstampft and zerkocht, whereby (Tannin) develops. In addition the Eisensulfat and the rubber are given arabicum. The rubber arabicum serves the better writableness and against flocculations.

The finished ink becomes only black on the paper by oxidation of the iron with the atmospheric oxygen iron (III) oxide. This takes approximately one day. So that the ink is better visible during the writing, still another coloring material is methyl-blue in addition-given as, which fades later. This was used with the contract ink partly than style element. The ink wrote blackblue and became more or less black after drying.

In addition, the Eisengallustinte can fade under unfavorable conditions in the course of the years. Faded ice close all US writings can be made again visible with a solution by Kaliumhexacyanoferrat (II) with surplus hydrochloric acid.

The present Treaties (and partly also Kanzleitinten) were into the 1960er years also for stylographs usually, at least in the division. There the use of Eisengallustinten in stylographs because of the oxidation of the basic material of the coloring material the danger of clogging taking place also there existed was connected such ink with something care of the stylographs. The only remaining large market for stylographs is the compulsory school, and there usually reducible coloring material ink, (e.g. king-blue filler ink) control the market for practical reasons, which are problem-free in the handling and are easily from laundry, which one cannot say of Eisengallustinten. Beside Eisengallustinten after antique prescriptions, which are not suited for stylographs, there are only more very few manufacturers, that manufacture such an ink for filling owners: The most well-known one is a filling feather/spring producer Montblanc, whose own blue-black ink contains still Eisengallustinte. The blue-black ink of Lamy is likewise a eisengallushaltige ink and allegedly identical to from Montblanc. In addition the company Rohrer & Klingner the ink and india inks for artists manufactures.

The Eisengallustinte ink-ate caused and becomes nowadays only for important documents (document authenticity) and in the Kalligrafie uses.

Prescription of a Gallus or with pure chemicals:

• Tannin 40 g
• Arab rubber (rubber arabicum) 15 g
• Iron vitriol (iron ii-sulfate) 25 g
• Blue, cryst. 5 g
• Water 900 g

Tannin, iron vitriol and rubber arabicum are separately into 300 g each water completely to solve (the rubber arabicum is appropriately to powder). One adds the iron vitriol solution to the and gives then the solution with the rubber in addition.

The total conception is brought in an email pot to cooking and for 15 minutes at simmering is held. The ink is to rest now one week in closed container. Then clearly one pours off and blue one admits. Repeated heat up is appropriate.

The rubber arabicum cannot be replaced by rubber Senegal, since this is not soluble! A replacement is possible for rubber with same quantity Dextrin, arabicum is better.

Source: "„Buchheister Ottersbach "“"„regulations for druggist "“11. Edition by George Ottersbach (people village/Hamburg) publishing house Julius Springer/Berlin 1933

The Mythylenblau can be replaced by another, water-soluble coloring material, not by a pigment. It serves the otherwise pale ink, which becomes low dark with drying only for the

In the original prescription also still 1 g phenol is aforementioned as preservative and 6 g sulfuric acid as a solution assistance. Both substances do not seem to the author, since a preservation is redundant with pure chemicals and an acid additive does not furnish advantages, probably however ink-ate necessary to promote can.

Official regulation for document ink:

In a litre at least 27 g and as well as at least 4 g must be contained metallic iron. The maximum content of iron may with o. Quantities any more than 6 g/l do not amount to.

The ink is to show sheet formation, nor wall fitting, still sediment after 14 days in the glass neither.

Eight days old signatures must remain low dark after washing with water and alcohol.

The ink must easily from the feather/spring flow and may not even immediately after drying not sticky be.

Source: "„Buchheister Ottersbach "“"„regulations for druggist "“11. Edition by George Ottersbach (people village/Hamburg) publishing house Julius Springer/Berlin 1933

Eisengallustinten are considered (if the official regulations to be fulfilled) as "„document-genuinly "“. So that this condition is fulfilled reliably, fresh signatures are not to become "„"“, because thereby ink is extracted from the paper.

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