Cobalt Aluminate Blue Spinel 1.High temperature resistant pigment 2.Non-toxic pigments 3.Special anti ... Descriptions:Cobalt Aluminate Blue Spinel ,Pigment Blue 28,high temperature resistant pigment,it is a bright color with reddish blue, ... is mainly used in high temperature (resistant) coatings, ceramics, enamels, glass coloring, coloring of high temperature resistance engineering plastics,food contact ...