Characteristic Niobium Silicide is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered.Chemical formula:Nb5Si3Molecular Weight:548.79g/mol Application The Nb-based RMIC’s have much higher potential application temperatures, because of their dramatically higher melting temperatures. It is used in high temperature in situ composites. Niobium Silicide-MSDS.pdf