... large quantity every month. Product Name: Cerium Oxide (Ceria) Purity: 99.99% min Grade: ... IV) Oxide; Ceric Oxide, Ceric Dioxide, Cerium Dioxide, Cerium (4+) Oxide, Ceria, Needlal, Nidoral, OpalinePhysical & Chemical Properties Appearance: ... Yellow to tan Solubility: Insoluble in water, moderately soluble in strong mineral acids Stability: Slightly hygroscopicUsage: Cerium oxide ...