无标题文档

Formula：Tb4O7
Mol.wt：747.72
Specification：

Terbium Oxide

Code	TO—3N5	TO—4N	Analytical Method
TREO％	≥99	≥99
Tb Purity and Relative RE-impurities(％)
Tb4O7/TREO	≥99.95	≥99.99
Eu2O3/TREO	content≤0.05	≤0.001	ICP
Gd2O3/TREO		≤0.002	ICP
Dy2O3/TREO		≤0.002	ICP
Ho2O3/TREO		≤0.001	ICP
Y2O3/TREO		≤0.003	ICP
Non-RE-impurities(％)
Fe2O3	≤0.002	≤0.0007	ICP
SiO2	≤0.01	≤0.003	ICP
CaO	≤0.005	≤0.002	ICP
CuO	-	≤0.0005	ICP
NiO	-	≤0.0005	ICP
PbO	-	≤0.001	ICP
Cl-	-	≤0.01	Chem
Loss on ignition（1000℃，1 hour）	≤1	≤1

Terbium oxide is dark brown powder,mainly used as an acivator of fluoresent powders.