NIOBIUM (II) OXIDE Chemical Properties

Melting point:

1936°C

Density 

7.3

form 

gray cubic crystals

color 

gray cubic crystals, crystalline

Water Solubility 

1.74μg/L at 22℃

CAS DataBase Reference

12034-57-0(CAS DataBase Reference)

EPA Substance Registry System

Niobium oxide (NbO) (12034-57-0)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-37/39

HS Code 

2825908590

MSDS

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NIOBIUM (II) OXIDE Usage And Synthesis

Chemical Properties

gray metallic appearance; can be obtained by reduction of Nb2O5 in H2 at 1300°C–1700°C; -100 mesh with 99.9% purity; cub, a=0.42108nm; enthalpy of fusion 85.00kJ/mol [CRC10] [CER91] [KIR81]

Preparation

A mixture of NbO2 and Nb metal is pulverized to as small a size as possible and then compressed into small pellets which are heated for 10-20 minutes at 1600-1700°C in an atmosphere of very pure Ar or in a high vacuum. The best support for these pellets is Nb sheet; however, the pellets should touch this sheet only at a very few points.

Flammability and Explosibility

Not classified

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