V2O5 | 99% min |
V2O4 | 1.5% max |
S | 0.05% max |
Fe | 0.2% max |
Si | 0.2% max |
Ca | 0.05% max |
Al | 0.01% max |
Na2O+K2O | 1.0% max |
V2O5 | 99.8% min |
V2O4 | 0.4% max |
S | 0.005% max |
Fe | 0.01% max |
Si | 0.01% max |
Ca | 0.02% max |
Al | 0.002% max |
Na2O+K2O | 0.03% max |
V2O5 | 99.5% min |
V2O4 | 1.0% max |
S | 0.01% max |
Fe | 0.02% max |
Si | 0.06% max |
Ca | 0.03% max |
Al | 0.005% max |
Na2O+K2O | 0.05% max |