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Ammonium metavanadate 99,9+% extra pure
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What is Ammonium Metavanadate?
Ammonium metavanadate is a colorless and odorless solid from the group of vanadates
Ammonium metavanadate can be produced by an ion exchange reaction of sodium metavanadate with ammonium chloride.
Ammonium metavandate is a colorless solid in the pure state, which is sparingly soluble in water, ethanol and ether, but easily soluble in dilute ammonia. The color changes to yellow as soon as it contains more vanadium(V)oxide V2O5 than corresponds to the stoichiometry. The yellowish colors are derived from polyvanadates. Aqueous solutions of ammonium metavanadate react almost neutrally. The pH value of a 5% solution at 20 °C is 6.5.
Above 50 °C it loses ammonia and easily turns into vanadium(V) oxide when heated dry
What is Ammonium Metavanadate used for?
Ammonium vanadate is used for the production of catalysts for organic and inorganic synthesis, for the production of paints and varnishes as a drying agent for paintings and inks. It is used in food analysis for the photometric determination of phosphate.
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-Technical data
Empirical formula NH4VO3
Molar mass (M) 116.98 g/mol
Density (D) 2.3
Melting point (mp)200 °C (Dec)
Solubility 5.1 g/l (H2O, 20 °C)
ADR 6.1 III • WGK 3
CAS No.[7803-55-6]
EC-No. 232-261-3 • UN No. 2859
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Hazard Statements
H301 Toxic if swallowed.
H319 Causes serious eye irritation.
H332 Harmful by inhalation.
H361fd Suspected of damaging fertility. Is suspected of it
harm the unborn child.
H372 Causes damage to organs through prolonged or repeated exposure (after
inhalation).
H410 Very toxic to aquatic life with long lasting effects.
Safety Recommendations
Precautions - Prevention
P260 Do not breathe dust.
P270 Do not eat, drink or smoke when using this product.
Precautions - response
P308+P313 IF exposed or possible: Get medical advice/attention.
Precautions - Storage
P405 Store locked up.