Ammonium metavanadate

{{Chembox

| Watchedfields = changed

| verifiedrevid = 451701848

| Name = Ammonium vanadate

| ImageFile = Ammonium-metavanadate-2D.png

| ImageName = Ammonium vanadate

| ImageFile1 = Ammonium-metavanadate-sample.jpg

| ImageName1 = Photo of a sample of ammonium vanadate

| IUPACName = Ammonium trioxovanadate(V)

| OtherNames = Ammonium vanadate

|Section1={{Chembox Identifiers

| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}

| ChemSpiderID = 19968892

| PubChem = 516859

| UNII_Ref = {{fdacite|correct|FDA}}

| UNII = FL85PX638G

| InChI = 1/H3N.3O.V/h1H3;;;;/q;;;;- 1/p+1/rH3N.O3V/c;1-4(2)3/h1H3;/q;-1/p+1

| SMILES = [NH4+].O=[V-](=O)=O

| InChIKey = UXJVWJGDHIZPLD-KKTKNITLAZ

| StdInChI_Ref = {{stdinchicite|correct|chemspider}}

| StdInChI = 1S/H3N.3O.V/h1H3;;;;/q;;;;-1/p+1

| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}

| StdInChIKey = UXJVWJGDHIZPLD-UHFFFAOYSA-O

| CASNo = 7803-55-6

| CASNo_Ref = {{cascite|correct|CAS}}

| RTECS = YWD875000

| UNNumber = 2859

}}

|Section2={{Chembox Properties

| Formula = NH₄VO₃

| MolarMass = 116.98 g/mol

| Appearance = white

| Density = 2.326 g/cm³

| SolubleOther = soluble in diethanolamine, ethanolamine

| MeltingPt = >{{convert|200|C|F K}}{{cite book |author1=John Rumble |title=CRC Handbook of Chemistry and Physics |date=June 18, 2018 |publisher=CRC Press |isbn=978-1138561632 |pages=4–40|edition=99th |language=English}}

| MeltingPt_notes = (decomposes)

| Solubility = 4.8 g/100 ml (20 °C)

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|Section3={{Chembox Structure

| MolShape =

| Coordination =

| CrystalStruct =

| Dipole =

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|Section7={{Chembox Hazards

| ExternalSDS =

| MainHazards = possible mutagen, dangerous for the environment

| FlashPt = Non-flammable

| GHSPictograms = {{GHS06}}{{GHS08}}

| GHSSignalWord = Danger

| HPhrases = {{H-phrases|301|332|340|361|370|372|412}}

| PPhrases = {{P-phrases|201|202|260|261|264|270|271|273|281|301+310|304+312|304+340|307+311|308+313|312|314|321|330|405|501}}

| NFPA-H = 4

| NFPA-F = 0

| NFPA-R = 0

| LD50 = 58.1 mg/kg, oral (rat)

}}

|Section8={{Chembox Related

| OtherAnions = Ammonium orthovanadate
Ammonium hexavanadate

| OtherCations = Sodium metavanadate
Potassium metavanadate

| OtherCompounds = Vanadium pentoxide

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}}

Ammonium metavanadate is the inorganic compound with the formula NH₄VO₃. It is a white salt, although samples are often yellow owing to impurities of V₂O₅. It is an important intermediate in the purification of vanadium.Günter Bauer, Volker Güther, Hans Hess, Andreas Otto, Oskar Roidl, Heinz Roller, Siegfried Sattelberger "Vanadium and Vanadium Compounds" in Ullmann's Encyclopedia of Industrial Chemistry, 2005, Wiley-VCH, Weinheim. {{doi|10.1002/14356007.a27_367}}