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Pigment Blue 28(Cobalt Blue)

Product Name: Cobalt Blue

Color Index: Pigment Blue 28

C.I. No.: 77346
CAS No.:1345-16-0

EINECS NO.:310-193-6  

Molecular Formula: CoO·Al2O3

Molecular Weight: -


Cobalt Blue Properties

EMPEROR Cobalt Blue is also named king blue, thenard blue or cobalt ultramarine, is a very bright blue. Cobalt blue is a mixed metal oxide pigment of spinel pattern. It has excellent heat resistance, light-fastness, acid resistance, alkali resistance and non-toxic, so it can be used in the area which required high heat resistance, excellent color stability and ageing resistance.

It can be use for fluorocarbon coatings, heat resistant coatings, plastics, ceramics, grass and artists' colors.


Technical Data Sheet

Cobalt Blue

Density (g/cm3)


PH value


Oil Absorption(g/100g)


105℃Volatile Matter%


Water soluble Matter%


Residue on 45um Mesh%


Heat resistant


Light Resistant


Acid resistant


Alkali Resistant



Note: The data contained here are based on our current knowledge and experience. It is the responsibility of user to test our products before the final application.

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