How Cobalt green is made:
| Artificial variety of pigment | Calcining of cobalt(II)-chloride and zinc(II)-oxide at medium temperatures. |
| In the lab | |
| Materials needed: | CoCl2 · 6H2O (cobalt(II)-chloride), zinc(II) oxide |
| Safety (MSDSs): | cobalt(II) chloride (at Fisher Scientific) |
| Method: | 1 g of cobalt(II) chloride and 5 g of zinc(II) oxide are homogenized in a mortar and the mixture is heated in a test tube for 3 to 4 minutes. The pigment is the homogenized in a mortar. |
Illustration of the process:
making cobalt green in the laboratory
 |
 |
 |
|
|
|
|
The ground pigment:
Pile of ground Cobalt green
Other greens
(intro) - Cobalt green - Copper resinate - Emerald green - Green earth - Malachite - Verdigris - Viridian
(intro) - Cobalt green - Copper resinate - Emerald green - Green earth - Malachite - Verdigris - Viridian
Sections: