1.there are 2Ton tantalum oxide off the shelf 1.the purity content:min99.5% 2.color :white or pale yellow ... , soluble in ethanol, acid, hydrofluoric acid. Both sexes oxides, the chemical stability, 2500 °C and 5.0 X105Pa didn't ... benchmark reagents, catalyst and spectral blood coagulant. Widely used in the electronics industry, chemical industry, communications, metallurgy industry, aerospace defense ...