Something about Lanthanum Tungsten Electrode by the Material of Lanthanum Tungsten Electrode Preparation

Something about Lanthanum Tungsten Electrode by the Material of Lanthanum Tungsten Electrode Preparation –II

Details: Category: Tungsten Information; Published on Thursday, 06 August 2015 15:59

“Something about Lanthanum Tungsten Electrode by the Material of Lanthanum Tungsten Electrode Preparation - I" is mainly about some properties of lanthanum acetate, this article is after I, talking about the index of lanthanum acetate in chemically pure, analytical reagent and technicalgrade.
The index of lanthanum acetate in chemically pure, analytical reagent and technicalgrade can be seen in the table below

Item \Index \ level	Content / Relative purity	Chemically pure	Analytical reagent	Technicalgrade
La(Ac)₃.nH₂O	≥	99.0	99.5	98.5
Oxide /TREO	≥	45.0	45.0	45.0
La₂O₃/TREO	≥	99.95	99.99	99.0
Iron /Fe₂O₃	≤	0.002	0.002	0.005
Phosphate /PO₄^3-	≤	0.002	0.0005	0.005
Sulfate /SO₄^2-	≤	0.01	0.01	0.02
Chloride /Cl^-	≤	0.005	0.002	0.005
Heavy metal /PbO^-	≤	0.001	0.001	0.002
Water insoluble	≤	0.01	0.01	0.01

La2O3 powder

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