Sodium Metavanadate (NaVO3)
Sodium metavanadate (NaVO 3 , CAS 13718-26-8) is a white to light yellow crystalline vanadate(V) salt, soluble in water and stable under normal conditions. It is used as a corrosion inhibitor for carbon steel, a catalyst and analytical reagent, and in photography, pharmaceutical research, biological studies and vanadium alloys.
Product Overview
Sodium metavanadate (NaVO 3 , CAS 13718-26-8), also called sodium vanadate(V), is an inorganic vanadium compound with a molecular weight of 121.93. It is a white to off-white or light yellow crystalline powder, soluble in water, non-flammable and stable under normal conditions, and it acts as a moderately strong oxidizing agent. It is used mainly as a corrosion inhibitor for carbon steel, a catalyst and analytical reagent, and in photography, pharmaceutical research, biological research and the production of vanadium alloys.
| CAS No. | 13718-26-8 |
| Molecular Formula | NaVO3 |
| Molecular weight | 121.93 |
| Appearance | White to off-white or light yellow crystalline powder |
| Solubility | Soluble in water |
| Properties | Non-flammable; moderately strong oxidizing agent; stable under normal conditions |
Key Benefits
- Effective corrosion inhibitor for carbon steel
- Catalyst in various chemical processes
- Soluble vanadium source for laboratory research
- Useful analytical reagent
- Precursor for vanadium alloys and catalysts
Applications
- Corrosion inhibitor — protects carbon steel, with high inhibition efficiency in treated systems
- Catalyst — used in chemical reactions and industrial processes
- Analytical reagent — laboratory chemical analysis
- Photography — specialty photographic applications
- Pharmaceutical research — research and development uses
- Biological research — vanadium source in microbial cultures, including studies of vanadium reduction in methanogens
- Alloys and catalysts — production of vanadium alloys and related catalysts
Production
Sodium metavanadate is produced by dissolving vanadium pentoxide (V 2 O 5 ) in sodium hydroxide solution, followed by concentration and crystallization: V 2 O 5 + 2NaOH → 2NaVO 3 + H 2 O.
Safety, Packing & Storage
Sodium metavanadate is toxic if ingested and may irritate the eyes, skin, mucous membranes and upper respiratory tract. Wear gloves, goggles and a mask, rinse with water after exposure and keep the product in a cool, dry, well-ventilated place.
FAQ
Q: What is sodium metavanadate used for?
A: Corrosion inhibition, catalysis, analytical chemistry, photography, pharmaceutical and biological research, and vanadium alloys.
Q: What are its CAS number and molecular formula?
A: CAS 13718-26-8, molecular formula NaVO3.
Q: How is it produced?
A: By dissolving vanadium pentoxide in sodium hydroxide, then concentrating and crystallizing.
Q: What safety precautions apply?
A: It is toxic if ingested and an irritant; wear PPE and store it in a cool, dry, ventilated place.