Blue litter 50 gram

C.I. Pigment Blue 32

History and application:
16th century
Cobalt oxide is obtained by roasting cobalt containing minerals.
This was then mixed with quartz and potash into a smooth, fused paste, then thrown into cold water, which disintegrated the blue particles; these particles were then ground to give smalt.
Used as a pigment. Transparent. Mainly used in oil and acrylic paints.

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