When was ink first used in India?
Ink has been used in India since at least the 4th century BC. This early Indian ink, called masi, was an admixture of several chemical components.
Questions about Ink
Short answers, pulled from the story.
What pigments were used in Ancient Egyptian red and black inks?
Egyptian red and black inks included iron and ocher as pigments. These formulations also contained phosphate, sulfate, chloride, and carboxylate ions.
How did Johannes Gutenberg change ink for the printing press in the 15th century?
Gutenberg developed an indelible, oil-based ink made from the soot of lamps mixed with varnish and egg white. Eventually an oily, varnish-like ink made of soot, turpentine, and walnut oil was created specifically for the printing press.
Which country first applied election ink based on silver nitrate in 1962?
Election ink based on silver nitrate was first applied in the 1962 Indian general election after being developed at the National Physical Laboratory of India. The election commission in India has used indelible ink for a number of elections.
Why does iron gall ink damage paper over time?
Iron gall ink is corrosive and damages paper over time due to acid catalyzed hydrolysis and iron(II)-catalysed oxidation of cellulose. Items containing this ink can become brittle and the writing fades to brown.