The Chemistry of Art > 1. Pigments in Painting > Why Pigments Used Needed to be Insoluble in Most Substances >
Explain why pigments used needed to be insoluble in most substances
- Pigments are necessary to be insoluble in most substances so as:
o When colourless medium dries, coloured pigment remains
o It is not easily removed when exposed to rain or groundwater
o It is not dissolved in perspiration or under hot climates