Natural pigment- Vivianite
Iron ore, sometime name “ blue erth”
Color: dark blue
Chemical description: Iron phosphate. Chemical formula: Fe²⁺₃ (PO₄) ₂ 8H₂O
Light resistance: 8
Alkali resistance: 3
Lime Resistance: 3
Acid resistance: 1
Used for techniques: acrylic, tempera, watercolor, gouache
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