Natural pigment- Ultramarine
Ultramarine is a synthetic sodium aluminosilicate containing sodium polysulfides.
Color: dark blue
Chemical description: sodium aluminosilicate, sodium polysulfides. Chemical formula: n(Na2O·Al2O3·mSiO2)·Na2Sx
Light resistance: 8
Alkali resistance: 5
Acid resistance: 4
Used for techniques: acrylic, tempera, watercolor, gouache, fresc, ceramic
The pigment was made by crushing and grinding. There may be insight uncrushed mineral in the package.
Pigments may contain harmful substances, so remember about safety rules.
- use eye and hand protection,
- cover the respiratory tract, do not eat,
- keep away from children,
- wash your eyes in case the pigment gets into your eyes