Niobium arsenide is grey powder, which is a semiconductor and photoelectric material. It is also available with lump, chunk and target. Arsenic and niobium are the raw material.Niobium ArsenideNiobium Arsenide Powder 99.99%Niobium Arsenide PackageNbAs 4NNiobium ArsenideCAS No.:12255-08-2EC No.:235-503-6Molecular Formula:NbAsDensity:7.28NbAsCuMgNiBiIn99.99%10ppm3ppm8ppm20ppm0.5ppmFeCdSiAlTePb20ppm5ppm20ppm15ppm1ppm25ppmNbAsCuAlMgPbFe99.9%≤30ppm≤30ppm≤20ppm≤40ppm≤40ppmBiTeSiSNa ≤20ppm≤200ppm≤20ppm≤50ppm≤60ppm