COBALT OXIDE

Description

Cobalt oxide (Co3O4) produces intense, reliable blues at almost any temperature. It is very powerful: as little as 0.25–1% gives a strong blue, so weigh it carefully. Combine with iron, manganese or rutile for more subtle blue-greys and blacks.

Common uses

• Glaze colourant, typically 0.25–1%
• Blue underglaze painting and brushwork
• Colouring slips and engobes

Available sizes: 50g, 100g, 250g

Safe handling

This material is toxic if swallowed or inhaled. Wear gloves and a dust mask (FFP3), keep it away from food areas, and wash your hands after use. Download the safety data sheet from our Safety Data Sheets page.