Exploring the Properties of Vanadium Oxide

Vanadium pentoxide, is a kind of metal oxide, chemical formula V2O5, widely used in metallurgy, chemical industry and other industries, mainly used in smelting iron vanadium.

Physicochemical properties of vanadium pentoxide

Density: 3.357g/cm3

Melting point: 690℃

Boiling point: 1750℃

Molecular weight: 182

Appearance: orange yellow solubility: soluble in concentrated acid, alkali, slightly soluble in water, insoluble in anhydrous ethanol.

At 700℃ above obvious volatilization. It is decomposed into oxygen and vanadium tetroxide at 700~1125℃, making it a catalyst for many organic and inorganic reactions. It is a strong oxidant and can be easily reduced to a variety of low-cost oxides. Slightly soluble in water, easy to form a stable colloidal solution. It is very soluble in alkali and forms vanadate (VO^3-) under weak alkaline conditions. Dissolving in strong acids (usually dissolved at pH=2) does not give rise to vanadate ions, but it does give rise to vanadate ions (VO^{2 +}). For toxic substances, the maximum allowable amount in the air is less than 0.5mg/m3.

Is Vanadium Oxide toxic?

On October 27, 2017, vanadium pentoxide was included in the list of Group 2B carcinogens published by the International Agency for Research on Cancer of the World Health Organization.

Vanadium pentoxide has always been classified as dangerous goods. Details are as follows:

Symbol: GHS05GHS07GHS08GHS09

Signal word: Danger

Hazard Statements: H302 + H332; H318; H335; H341; H361d; H372; H411

Precautionary Statement: P201; P261; P273; P280; P305 + P351 + P338 + P310; P501

Packing Group: III

Customs Code: 2825301000

UN Number: UN 2862

Danger class code: R20/22; R37; R48/23; R51/53; R63; R68

Safety Description: S36/37-S38-S45-S61

Emergency treatment of vanadium pentoxide leakage

Emergency treatment: isolation of contaminated areas, restricted access. Emergency personnel are advised to wear self-contained positive pressure breathing apparatus and protective clothing. Avoid dust, carefully sweep, place in a bag and transfer to a safe place. If a lot of leakage, with plastic sheet, canvas cover. Collect and recycle or transport to waste disposal site for disposal.

Handling of vanadium pentoxide

Operation precautions: closed operation, local exhaust air. Operators must be specially trained and strictly abide by operating procedures. It is recommended that operators wear a dust mask (full cover), a rubber cloth anti-poison jacket, and rubber gloves. Keep away from flammable and combustible materials. Avoid producing dust. Avoid contact with acids. When handling, light loading and unloading should be done to prevent damage to packaging and containers. Equipped with leak emergency treatment equipment. An empty container may contain harmful residue.

Vanadium pentoxide storage requirements

Store in a cool, ventilated warehouse. Keep away from fire and heat. It should be stored separately from combustible materials, acids and edible chemicals, and should not be mixed. The storage area should be equipped with suitable materials to contain leaks. The "five pairs" management system for extremely toxic substances should be strictly implemented.

Applications of vanadium pentoxide

Vanadium pentoxide is a strong oxidant and can be easily reduced to various low - cost oxides. Slightly soluble in water, easy to form a stable colloidal solution, so what are the effects of vanadium pentoxide?

1. Vanadium pentoxide is widely used in metallurgy, chemical industry and other industries, mainly for smelting iron vanadium.

2. Used as alloy additive, accounting for more than 80% of the total consumption of vanadium pentoxide.

3. Used as catalyst for organic chemical industry, namely catalyst, accounting for about 10% of the total amount.

4. Used as inorganic chemicals, chemical reagents, enamel and magnetic materials, accounting for about 10% of the total.