# Talk:Yttrium(III) oxide

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## Not very relevant to this report

Dear all: in case I might have overstepped, the following statements were removed from this report on yttrium oxide:

And the following statement is too vague to be useful, IMHO: ""It can also be used as a catalyst for ethylene polymerization." Define "it".

• "Any of a group of hard glassy minerals (silicates of various metals) used as gemstones and as an abrasive"

--Smokefoot 21:42, 19 March 2006 (UTC)

## a hazard or not?

Why does it hav a level-three health tag? -lysdexia 23:59, 29 September 2006 (UTC)

## melting point of ${\displaystyle {\rm {Y_{2}\!~O_{3}}}}$

In the Thesis "Grow and Spectroscopy of Ytterbium-doped sesquioxydes" by Volker Peters, (Shaker Verlag, 2001), for the melting point of ${\displaystyle {\rm {Y_{2}\!~O_{3}}}}$, value ${\displaystyle {\rm {2430^{o}}}}$ C is suggested, instead of 2690 °C in the article Yttria.