Mars Yellow

Colour: Mars Yellow
Lightfastness: AA
Opacity: Opaque
Pigment: PY42
Pigment description: Yellow Iron Oxide
ASTM Lightfastness classification: I
Pigment classification: Synthetic inorganic
Color Index Number: 77492
Viscosity range (mPa.s): 800 - 1.500

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