Prussian Blue (Shade)

Colour: Prussian Blue (Shade)
Lightfastness: AA
Opacity: Semi-opaque
Pigment: PB29, PB15:3, PBk7
Pigment description: Aluminium Sodium Sulfosilicate, Copper Phthalocyanine Blue, Carbon Black
ASTM Lightfastness classification: I
Pigment classification: Mixture
Colour Index Number: -
Viscosity range (mPa.s): 800 - 1,500

Colour Index
The pigments used are both inorganic and organic. Inorganic pigments have been used since antiquity and the vast majority come from or are extracted from minerals and clays, such as natural earths, siennas, and ochres. Titanium pigments, carbon, ultramarine blue, cobalts and cadmiums also belong to this category. Many of them are currently synthesised in industrial processes. Organic pigments are more modern, developed at the beginning of the 20th century thanks to new synthesis methods in Organic Chemistry. These synthetic pigments are now a very important group in the manufacture of colours for artists, producing bright and luminous shades of extraordinary intensity with excellent stability and permanence. The range of organic pigments is currently very extensive and ranges from azo pigments, blues, phthalocyanine greens, dioxazines, pyrroles, anthraquinones, quinacridones, etc.
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