Cerium Oxide

Formula: CeO₂
Nol.wt.: 172.12
CAS: 1036-38-3
Appearance: light yellow powder
Uses: Mainly used as the glass decolorizing agent and the glass polishing powder. Also used as the raw material in making metal cerium. High purity Cerium dioxide is very important in the applications of rare earth fluorescent materials.

Code	CeO-3N	CeO-3.5N	CeO-4N
Total amount of rare earth oxides %	≥99	≥99	≥99
Cerium purity and relative rare earth impurities
CeO₂/TREO %	99.9	99.95	99.995
La₂O₃/TREO %	≤0.08	≤0.04	≤0.004
Pr₆O₁₁/TREO %	≤0.01	≤0.01	≤0.003
Nd₂O₃/TREO %	≤0.005	≤0.005	≤0.001
Sm₂O₃/TREO %	≤0.004	≤0.005	≤0.002
Y₂O₃/TREO %	≤0.0001	≤0.001	≤0.001
Non rare earth impurity
Fe₂O₃%	≤0.005	≤0.005	≤0.002
SiO₂%	≤0.02	≤0.015	≤0.01
CaO %	≤0.01	≤0.005	≤0.005
Cl^– %	≤0.06	≤0.06	≤0.05
SO ₂ ⁴^– %	≤0.06	≤0.06	≤0.05
Radioactive	1Bq/g

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