... dispersion un-penetrability Iron Oxide Yellow Chemical Formular: FeOOHColor Index: Pigment Yellow 41CAS No.:20344-49-4 Character 1. Powder, exquisite ... . 4. Only dissolved in heat strong acid. Application 1. Coating, antirust pigment. 2. Tinting of rubber, plactic product, scagliola, wall, terrazzo. 3 ...