WitrynaPerhaps the simplest description is that ink is a liquid or semi-liquid material used for writing, printing or drawing. Chemists view it as a colloidal system of fine pigment particles dispersed in a solvent (Chem. Br., February 2003, p28). The pigment may or may not be coloured, and the solvent may be aqueous or organic. http://pubsapp.acs.org/cen/science/85/8551sci2box1.html
Schrecky, J.O. (1989) Organic Chemistry on Postage Stamps.
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Organic Chemistry Frontiers journal - Royal Society of Chemistry
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