Ultramarine Blue Pigments<br>Ideal for the Flexographic Ink Market
Ultramarine Blue for Liquid Ink
Ultramarine blue (CI pigment blue 29) is an inorganic pigment, (sulphurized silicic acid aluminum sodium salt) with the following chemical formula Na8-10 (Al6 Si6) O24 S2-4. China clay, sulphur and sodium carbonate are combined to produce a brick, which is kiln fired over three weeks at temperatures up to 850_C. The bricks are then crushed and milled to make the distinctive blue powder.