Hansa Yellow

Color: Hansa Yellow
Lightfastness: A
Opacity: Semi-opaque
Pigment: PY3
Pigment description: Arylide Yellow
ASTM Lightfastness classification: II
Pigment classification: Synthetic organic
Color Index Number: 11710
Viscosity range (mPa.s): 20.000 - 25.000

Color Index
The pigments used are both inorganic and organic. Inorganic pigments have been used since antiquity and the vast majority are derived from or extracted from minerals and clays, such as natural earths, siennas and ochres. Titanium pigments, carbon black, ultramarine blue, cobalt and cadmium pigments 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 new methods of synthesis 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. 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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