... purity content:min99.5% 2.color :white or pale yellow Tantalum oxide, white three party crystals or powder, density 8.2 g ... preparation. For the preparation of metal Ta, alloy and other tantalum tantalum capacitors, salt, optical glass etc, also used as a benchmark ... 0.004Si 0.01F0.15 Ignition Loss, %, max0.5ApplicationFor tantalum rod, tantalum carbide, etc Packed in paper drums of 25kg or 50kg ...