Physical And Chemical Properties Of Vanadium Pentoxide
Density: 3.357 g/cm3
Melting point: 690°C
Boiling point: 1750°C
Molecular weight: 182
Appearance: orange-yellow
Solubility: soluble in concentrated acid and alkali, slightly soluble in water, insoluble in anhydrous ethanol.
It evaporates significantly at temperatures above 700°C. It decomposes into oxygen and vanadium tetroxide at 700~1125°C, making it a catalyst for many organic and inorganic reactions. It is a strong oxidizing agent and can be easily reduced to a variety of inexpensive oxides. It is slightly soluble in water and readily forms a stable colloidal solution. It is highly soluble in alkali and forms vanadate (VO3-) under weak alkaline conditions. When dissolved in a strong acid (usually soluble at pH = 2), it does not form vanadate ions, but forms vanadium ions (VO2+). For toxic substances, the maximum permissible amount in the air is less than 0.5 mg/m3.
Emergency Care For Vanadium Pentoxide Leakage
Emergency treatment: Isolate the contaminated area from the leak and restrict access to it. It is recommended that emergency personnel wear self-contained positive pressure respirators and wear anti-toxic clothing. Avoid dust, sweep it thoroughly, put it in a bag and carry it to a safe place. If there is a large leak, cover it with plastic wrap or canvas. Collect and recycle it or take it to a landfill for disposal.
Operation And Disposal Of Vanadium Pentoxide
Precautions for operation: Closed mode of operation, local exhaust. Operators must undergo special training and strictly follow the work procedure. Operators are advised to wear dust masks (full face), tape anti-toxic clothing, and rubber gloves. Stay away from flammable and combustible materials. Avoid dust. Avoid contact with acids. Load and unload carefully during transport to avoid damaging packaging and containers. Equip equipment for emergency elimination of leaks. Empty containers may contain harmful substances.
