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| TUNGSTEN (IV) OXIDE Basic information |
| TUNGSTEN (IV) OXIDE Chemical Properties |
| Melting point | 1500-1600°C | | Boiling point | 1730℃[at 101 325 Pa] | | density | 12,11 g/cm3 | | form | Powder | | Specific Gravity | 12.11 | | color | brown | | Water Solubility | Soluble in acid and potassium hydroxide. Insoluble in water. | | Exposure limits | ACGIH: TWA 3 mg/m3NIOSH: TWA 5 mg/m3; STEL 10 mg/m3 | | CAS DataBase Reference | 12036-22-5(CAS DataBase Reference) | | EPA Substance Registry System | Tungsten oxide (WO2) (12036-22-5) |
| Hazard Codes | Xi | | Risk Statements | 37 | | Safety Statements | 26-36 | | WGK Germany | 3 | | TSCA | Yes |
| TUNGSTEN (IV) OXIDE Usage And Synthesis |
| Chemical Properties | brown powder(s), may become purple on standing; formed when WO3 is reduced by H2 at 575°C–600°C [KIR83] [STR93] | | Uses | Tungsten(IV) oxide is used in the production of tungsten and tungstates, in alloys, in fire-proofing fabrics and as a ceramic pigment. It is used to study their chromism, photocatalysis and sensing capabilities. It is associated with rhenium trioxide particles and used for detection of protonatable, radical and precharged species under laser desorption ionization. | | Flammability and Explosibility | Nonflammable |
| TUNGSTEN (IV) OXIDE Preparation Products And Raw materials |
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