
Most powerful of the colouring pigments. In lead and leadless glazes having a silica content produces strong deep blue whilst in alkaline glazes the colour is bright blue. Glazes high in alumina develop a cool lighter blue.
Formula: Co3O4
Health & Safety Information
Pictograms:

Hazard Statements:
H302 Harmful if swallowed.
H317 May cause and allergic skin reaction.
H410 Very toxic to aquatic life with long lasting effects.
Precautionary Statements:
P273 Avoid release to the environment.
P280 Wear protective gloves.
P501 Dispose of contents /container to an approved waste disposal plant.