●Physical Properties
White powder crystal, when oxygen defects appear in the lattice, the color becomes primrose yellow, it is amphoteric oxide, difficult to soluble in water, slightly soluble in hydrofluoric acid, insoluble in inorganic acid other than hydrofluoric acid, soluble in molten NaOH, Koh, K2S2O7, KHSO4.
●Main usage
Used as raw material of niobium, niobium bar, niobium alloy, niobium carbide, tantalum niobium complex, electronic ceramics, optical glass and lithium niobate crystal.
●Packaging
Iron (paper) drum out, double plastic packaging inside.
●Chemical composition:Industry standard of industrial niobium pentoxide(YS/T428-2000)
Impurity | Impurity element(%,≤) | ||
Element | FNb2O5-1 | FNb2O5-2 | FNb2O5-3 |
Ta | 0.03 | 0.08 | 0.3 |
Ti | 0.001 | 0.002 | 0.005 |
W | 0.003 | 0.005 | 0.01 |
Mo | 0.002 | 0.003 | - |
Cr | 0.002 | 0.003 | - |
Mn | 0.002 | 0.005 | - |
Fe | 0.005 | 0.02 | 0.03 |
Ni | 0.002 | 0.01 | 0.02 |
Cu | 0.002 | 0.005 | 0.005 |
Al | 0.002 | 0.002 | 0.01 |
Si | 0.005 | 0.01 | 0.02 |
As | - | - | 0.005 |
Sb | - | - | 0.005 |
Pb | - | - | 0.005 |
S | - | - | 0.01 |
P | - | - | 0.01 |
F- | 0.08 | 0.1 | 0.15 |
Igloss(%) | 0.2 | 0.3 | 0.4 |