性状 有吸湿性。在空气中很快吸收氨和从铵盐中置换氨。不溶于水和碱；溶于酸，露置空气中易吸收二氧化碳和水。半数致死量(大鼠，腹腔)500mg/kg。  

备注: 以上描述，仅作参考，并不表示您收到的产品，与此项描述完全相符，产品的出厂标准，请参见质量标准。

质量标准    

99.9% metals basis:

外观Appearance                                   White Powder
X-射线衍射分析X-Ray Diffraction           Conforms to Structure
纯度Purity                                          ≥99.9% Based on Trace Rare Earth Analysis of ICP
钇Y (Complexiometric EDTA )                 77.6 - 79.9 %
ICP:                                                   Confirms Yttrium Component Confirmed
痕量稀土分析Trace Rare Earth Analysis     ≤2000ppm by ICP Atomic emission

99.99% metals basis:

外观Appearance                                   White Powder
X-射线衍射分析X-Ray Diffraction           Conforms to Structure
纯度Purity                                          ≥99.99% Based on Trace Rare Earth Analysis of ICP
钇Y (Complexiometric EDTA )                 77.6 - 79.9 %
ICP:                                                   Confirms Yttrium Component Confirmed
痕量稀土分析Trace Rare Earth Analysis     ≤200ppm by ICP Atomic emission

99.999% metals basis:

外观Appearance                                   White Powder
X-射线衍射分析X-Ray Diffraction           Conforms to Structure
纯度Purity                                          ≥99.999% Based on Trace Rare Earth Analysis of ICP
钇Y (Complexiometric EDTA )                 77.2 - 80.3 %
ICP:                                                   Confirms Yttrium Component Confirmed
痕量稀土分析Trace Rare Earth Analysis     ≤20ppm by ICP Atomic emission
贮存 对空气敏感，密封干燥保存

用途 制造红外线光谱仪中光源。乙炔灯和煤气灯的纱罩。彩色电视管荧光体。氧化锆耐火材料稳定剂。荧光粉。人造宝石激光晶体、超导材料以及电子工业方面的许多尖端应用。

联合国编号

Risk： R36/37/38-

Safety : S26- S36- S37/39-

Hazard : Xi -