Vanadium(V) oxide[2]

Updated: 2026-09-16

Overview

Vanadium(V) oxide, also known as vanadium pentoxide (V2O5), is a significant industrial chemical compound. It is primarily used as a catalyst in the production of sulfuric acid through the contact process. The compound is characterized by its bright yellow to red crystalline appearance and its ability to act as a strong oxidizing agent. Vanadium(V) oxide is derived from vanadium ores or as a byproduct of uranium mining. Its high thermal stability and catalytic properties make it indispensable in various chemical and industrial applications. The compound is also utilized in the manufacturing of ceramics, glass, and as a precursor for other vanadium compounds.

Physical and Chemical Properties

Vanadium(V) oxide exhibits a density of 3.35 g/cm³ and melts at 690°C, decomposing at higher temperatures. It is slightly soluble in water but readily dissolves in strong acids and alkalis, forming vanadate salts. The compound's bright color makes it useful as a pigment in ceramics and glass. As a strong oxidizing agent, V2O5 reacts vigorously with reducing agents and organic materials. It is hygroscopic, meaning it can absorb moisture from the air, which necessitates careful storage. The compound's catalytic properties are particularly valuable in oxidation reactions, such as the conversion of sulfur dioxide to sulfur trioxide in sulfuric acid production.

Main Applications

The primary use of vanadium(V) oxide is as a catalyst in the contact process for sulfuric acid production, where it facilitates the oxidation of sulfur dioxide. This application accounts for the majority of its global consumption. The compound is also employed in the manufacture of ceramics and glass, where it imparts a yellow or red color. In recent years, V2O5 has gained attention as a material for lithium-ion and vanadium redox flow batteries due to its electrochemical properties. Additionally, it serves as a precursor for other vanadium compounds used in chemical synthesis and as a corrosion inhibitor in certain industrial processes.

Safety and Storage

Vanadium(V) oxide is classified as toxic and poses health risks upon inhalation, ingestion, or skin contact. Proper personal protective equipment, including respirators, gloves, and eye protection, must be used when handling the compound. Workplace exposure limits should be strictly observed. The material should be stored in tightly sealed containers in a cool, dry, well-ventilated area, away from incompatible substances such as strong reducing agents and organic materials. Spills should be contained and cleaned up immediately by trained personnel using appropriate protective measures. Proper disposal methods must comply with local environmental regulations.

B2B Procurement Guide

When procuring vanadium(V) oxide, industrial buyers should clearly specify the required purity level, which typically ranges from 98% to 99.9% for most applications. Technical grade is sufficient for catalytic uses, while battery applications may require higher purity. Packaging options include 25kg drums or bulk containers for large-scale users. Buyers should verify supplier certifications, particularly for hazardous materials handling and transportation. Lead times may vary depending on market demand and geopolitical factors affecting vanadium supply. Consider establishing long-term contracts to mitigate price volatility. Quality control should include verification of chemical composition and physical properties upon receipt.