OXERRA Trans-Oxide Synthetic Yellow Iron Oxides are high quality inorganic pigments suitable for many demanding colorant applications. The Trans-Oxide pigments have excellent weathering and light fastness, acid and alkali, and chemical resistance which is inherent for Pigment Yellow 42. AC0544 is a workhorse transparent red-shade yellow. It is easiest to disperse in solvent-based systems and has good Kaburi.