Item

Excellent grade

First grade

Second grade

V₂O₅

98.5%min

97%min

93%min

Si

0.25%max

0.35%max

0.5%max

Fe

0.4%max

0.5%max

0.5%max

P

0.05%max

0.3%max

0.5%max

S

0.03%max

0.3%max

0.3%max

As

0.02%max

0.03%max

0.04%max

Properties

Brown flake solid,M.P.:690 °C, decomposition in 1750 °C

Packing

200kg or 250kg/drum