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VWR Ammonium metavanadate ≥99.0% analytical reagent
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Specifications:
| Application | Analytical Chemistry | ||
| Storage Temperature | Ambient | ||
| Product Type | Laboratory Chemical | Forms | Powder |
| Product Brand | VWR | ||
| Product Grade | Analytical grade | Formula | NH₄VO₃ |
Ammonium metavanadate (NH₄VO₃) is a high-purity, water-soluble vanadium(V) salt used in analytical chemistry, catalyst preparation, pigment manufacturing, and metallurgy. This analytical grade compound is characterized by a minimum purity of 99.0%, with controlled levels of chloride, sulfate, and heavy metal impurities, making it suitable for both qualitative and quantitative laboratory applications.
Key Features
- High Purity (≥99.0%): Suitable for accurate and reproducible analytical and synthetic applications
- Analytical Reagent Grade: Manufactured to meet laboratory standards for trace contaminant control
- Inorganic Vanadium Source: Common precursor for vanadium oxide catalysts and ceramics
- Solid and Stable: Easy to store and weigh, supplied in plastic bottles for handling safety
- Toxic Classification: Use in controlled environments with appropriate protective measures
Chemical and Physical Properties
| Property | Specification |
|---|---|
| Chemical Name | Ammonium Metavanadate |
| CAS Number | 7803-55-6 |
| Molecular Formula | NH₄VO₃ |
| Molecular Weight | 116.98 g/mol |
| Melting Point | 200 °C |
| Density | 2.33 g/cm³ (at 20 °C) |
| Storage Temperature | Ambient |
| EINECS Number | 232-261-3 |
| MDL Number | MFCD00011430 |
| Merck Index | 13,00572 |
| UN Number | UN2859 |
| ADR Classification | Class 6.1 (Toxic), Packing Group II |
Specification Test Results
| Parameter | Limit |
|---|---|
| Assay | ≥99.0% |
| Chloride (Cl⁻) | ≤50 ppm |
| Sulfate (SO₄²⁻) | ≤0.20% |
| Lead (Pb) | ≤20 ppm |
Applications
- Analytical Chemistry: Used in redox titrations and as a colorimetric reagent for phosphates and other anions
- Catalyst Preparation: Intermediate in the synthesis of vanadium pentoxide (V₂O₅) catalysts
- Pigment Manufacturing: Component in ceramic glazes and colorants for glass and porcelain
- Metallurgy: Source of vanadium in alloying and surface treatment processes
- Research & Education: Utilized in inorganic synthesis, oxidation reactions, and lab-scale experimentation
VWR Ammonium Metavanadate ≥99.0% Analytical Reagent offers high purity and consistent quality for laboratories working with vanadium chemistry. Whether for analytical use, catalytic formulation, or pigment preparation, it provides the reliability and traceability required in modern laboratory and industrial workflows.