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Names | |
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IUPAC name Sodium trioxovanadate(V) | |
Identifiers | |
3D model (JSmol) | |
ChEBI | |
ChemSpider | |
DrugBank | |
ECHA InfoCard | 100.033.869 |
EC Number |
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PubChem CID | |
RTECS number |
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UNII | |
UN number | 3285 (SODIUM VANADATE) |
CompTox Dashboard (EPA) | |
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Properties | |
NaVO3 | |
Molar mass | 121.9295 g/mol |
Appearance | yellow crystalline solid |
Density | 2.84g/cm3 |
Melting point | 630 °C (1,166 °F; 903 K) |
19.3 g/100 mL (20 °C) 40.8 g/100 mL (80 °C) | |
Thermochemistry | |
Heat capacity (C) | 97.6 J/mol K |
Std molar entropy (S⦵298) | 113.8 J/mol K |
Std enthalpy of formation (ΔfH⦵298) | −1148 kJ/mol |
Hazards | |
Occupational safety and health (OHS/OSH): | |
Main hazards | Toxic, irritant |
NFPA 704 (fire diamond) | |
Flash point | Non-flammable |
Lethal dose or concentration (LD, LC): | |
LD50 (median dose) | 98 mg/kg (rat, oral) |
Related compounds | |
Other anions | Sodium orthovanadate |
Other cations | Ammonium metavanadate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Sodium metavanadate is the inorganic compound with the formula NaVO3. [1] It is a yellow, water-soluble salt.
Sodium metavanadate is a common precursor to other vanadates. At low pH it converts to sodium decavanadate. It is also precursor to exotic metalates such as [γ-PV2W10O40]5-, [α-PVW11O40]4-, and [β-PV2W10O40]5-. [2]
Sodium metavanadate occurs as two minor minerals, metamunirite (anhydrous) and a dihydrate, munirite. Both are very rare, metamunirite is now known only from vanadium- and uranium-bearing sandstone formations of central-western USA and munirite from Pakistan and South Africa. [3]