Vanadium pentoxide flakes are high-value vanadium intermediates used in vanadium alloy production, metallurgical processing, and selected chemical and catalyst applications. The 99% grade is a well-established commercial purity level, while high-purity products typically contain approximately 99.5% V₂O₅ content.
Product Specifications
| Parameter |
V₂O₅ 99% Flake |
V₂O₅ 99.5% High-Purity Flake |
| V₂O₅ |
99.0% min. |
About 99.5% typical in published high-purity product data |
| Si |
About 0.15–0.20% typical published limit |
Lower impurity profile required |
| Fe |
About 0.20% typical published limit |
Lower impurity profile required |
| P |
About 0.03% typical |
Process-specific |
| S |
About 0.01% typical |
Process-specific |
| As |
About 0.01% typical |
Process-specific |
| Form |
Flake |
High-purity flake |
| Thickness |
Up to about 5 mm in metallurgical products |
Product-specific |
| Main applications |
Alloy production and metallurgy |
High-purity alloy and selected chemical applications |
Note: The 99.5% column should be treated as a procurement category rather than a guaranteed standard, as universal impurity limits could not be established from public sources.
Available Grades
V₂O₅ 99% Flakes
Suitable for applications requiring higher V₂O₅ concentration than standard 98% metallurgical material. Published commercial specifications include:
- V₂O₅: 99.0% min.
- Si: 0.20% max.
- Fe: 0.20% max.
- P: 0.03% max.
- S: 0.01% max.
- As: 0.01% max.
- Na₂O + K₂O: 1.0% max.
V₂O₅ 99.5% High-Purity Flakes
Used where greater vanadium concentration and lower impurity levels are required. Largo identifies its VPURE+ flakes as 99.0% guaranteed with 99.5% typical vanadium content, with master alloy production as a principal application.
Size and Form
V₂O₅ flakes are generally supplied as fused material. Published metallurgical references include:
- Up to approximately 5 mm thickness
- Approximately 50 × 50 × 5 mm maximum in one technical specification
- Approximately 55 × 55 × 5 mm maximum in another commercial specification
Applications
Vanadium Alloy Production
High-purity V₂O₅ flakes serve as vanadium feedstock for master alloy production, including titanium alloy applications.
Catalyst Applications
V₂O₅ is used in catalyst systems and chemical processing. Catalyst producers should confirm required physical form, particle size, and impurity profile before ordering.
Metallurgy
V₂O₅ flakes are used in ferrovanadium and other vanadium alloy production. Flake material offers lower dust generation and suitable handling characteristics compared with fine powder in metallurgical charging applications.
Technical Considerations
High-purity V₂O₅ selection should consider V₂O₅ concentration, Fe, Si, P, S, As, alkali metals, moisture, flake dimensions, and end-use process requirements. Buyers should define whether their requirement is based on guaranteed minimum V₂O₅ content, typical assay, or a complete chemical specification.
Procurement Checklist
- Product and grade specifications
- Guaranteed or typical V₂O₅ content
- Complete impurity limits
- Flake size and form requirements
- Quantity and application details
- Destination and packing requirements
- COA/SDS documentation needs
Quality and Documentation
For high-purity V₂O₅, buyers should request Certificate of Analysis, Safety Data Sheet, detailed chemical composition, batch information, packing list, and inspection documentation when required. The distinction between guaranteed and typical purity should be clearly stated in commercial specifications.
Packing Options
Published commercial V₂O₅ flake packaging includes steel drums and bulk bags. Examples include 200 kg drums and 1,000 kg super sacks. Final packing should be confirmed according to specific shipment and handling requirements.
Frequently Asked Questions
What are 99% V₂O₅ flakes used for?
They are used for vanadium alloy production, ferrovanadium-related metallurgy, and selected industrial chemical applications.
What does 99.5% V₂O₅ mean?
It generally indicates a high-purity product with approximately 99.5% V₂O₅ content. Some commercial products describe 99.5% as a typical value while guaranteeing 99.0% minimum.
Are 99.5% V₂O₅ flakes suitable for catalysts?
V₂O₅ is used in catalyst applications, but catalyst producers should confirm the required physical form, particle size, and impurity profile before ordering.
What is the difference between 99% and 99.5% V₂O₅?
The difference is primarily the vanadium pentoxide concentration and associated impurity control. The exact chemical limits depend on the producer and end-use specification.
What impurities should buyers check?
Fe, Si, P, S, As, and alkali metals are commonly reviewed.
What size can V₂O₅ flakes be?
Published metallurgical specifications include flakes up to approximately 5 mm thick and around 50–55 mm maximum dimensions.
Are V₂O₅ flakes used in master alloys?
Yes. High-purity V₂O₅ flakes are used as feedstock for master alloy production.
What should a buyer specify when requesting a quotation?
Specify V₂O₅ grade, guaranteed or typical purity, impurity limits, size, quantity, application, destination, packing, and required documents.
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