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Grade:	99.99%~99.999%
Application:	optical glass
Content(percent):	yttrium
Product Type:	Rare Earth Powder
Composition:	Yttrium
Place of Origin:	China (Mainland)
production method:	Pure chemical precipitation, non physical methods

Specifications

2.  Specification:
Relative Purity                             Min.%			99.999		99.995		99.99
TREO                                 Min.%			77±2		77±2		77±2
RE Impurities/REO  Max.%		La2O3	0.0001		0.0005		0.0010
		CeO2	0.0001		0.0005		0.0010
		Pr6O11	0.0001		0.0005		0.0010
		Nd2O3	0.0001		0.0005		0.0010
		Sm2O3	0.0001		0.0005		0.0010
		Eu2O3	0.0001		0.0005		0.0010
		Gd2O3	0.0001		0.0005		0.0010
		Tb4O7	0.0001		0.0005		0.0010
		Dy2O3	0.0001		0.0005		0.0010
		Ho2O3	0.0001		0.0005		0.0010
		Er2O3	0.0001		0.0005		0.0010
		Tm2O3	0.0001		0.0005		0.0010
		Yb2O3	0.0001		0.0005		0.0010
		Lu2O3	0.0001		0.0005		0.0010
Nom-RE Impurities   Max.%		Fe2O3	0.0010		0.0050		0.0100
		SiO2	0.0100		0.0200		0.0300
		CaO	0.0050		0.0050		0.0050
		F	39±3		39±3		39±3
L.O.I                             Max.%			1		1		1