tanno-gallate of iron
Germany
20th Century
Recipe Details
Ingredients
tanno-gallate of iron
Preparation Steps
A standardized ink formula devoid of added color enhancers to ensure homogeneity and simplicity (p. 28).
Original Recipe Text
A standardized ink formula devoid of added color enhancers to ensure homogeneity and simplicity (p. 28).
Evidence
"In 1974, the German government employed what they called the ‘official ink of the first class’ to be used in official documents, which consisted of tanno-gallate of iron ink with no added color (Eusman 1998)."
Remarks
The lack of additives was a reaction to the inconsistent quality of mass-produced inks in the eighteenth and nineteenth centuries (p. 28-29).
Scientific Analysis
Chemical Compositionferric pyrogallate
Certainty Level
Confirmed
Instrumentally Verified
Not Verified
Metadata
Material Type
pigment
ColorBlack
RegionGermany
Approx. Year1950
Source Information
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