Colortherm® Red 520 is a heat stable iron oxide red pigment. The product is well suited to the coloring of plastics or masterbatches and exceptionally low Copper and Manganese content makes it especially suitable for the coloring of natural and synthetic rubber compounds. The product exhibits good dispersibility, even in processes which have short dwell times and relatively low shear forces. It is easy to break down and distribute to reach its final tinting strength quickly. It does not migrate and is very lightfast and weather stable. The pigment belongs to the Colortherm® product range that has been developed particularly for applications where high heat stability is required.