Customization: | Available |
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Application: | Aviation, Electronics, Industrial, Medical, Chemical |
Standard: | GB |
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Ammonium dimolybdate Basic information |
Physical Properties Uses Preparation Reactions |
Product Name: | Ammonium dimolybdate |
Synonyms: | Ammonium dimolybdate(ADM);Ammoniummolybdate(di),Mo56.5%;Ammoniumdimolybdate,99%;Ammonium molybdenum oxide ((NH4)2Mo2O7);Diammoniumdimolybdat;molybdate, diammonium;Diammonium dimolybdate;DIAMMONIUMHEPTAOXODIMOLYBDATE(2-) |
CAS: | 27546-07-2 |
MF: | H2Mo2O7.2H3N |
MW: | 339.95 |
EINECS: | 248-517-2 |
Product Categories: | Industrial/Fine Chemicals;Inorganics;inorganic compound;catalyst of oil |
Mol File: | 27546-07-2.mol |
Ammonium dimolybdate Chemical Properties |
Melting point | 300 °C |
density | 3.1 |
form | Powder |
color | white |
Water Solubility | Soluble in water. |
CAS DataBase Reference | 27546-07-2(CAS DataBase Reference) |
EPA Substance Registry System | Ammonium molybdenum oxide ((NH4)2Mo2O7) (27546-07-2) |
Safety Information |
Hazard Codes | Xi |
Risk Statements | 36/37/38 |
Safety Statements | 24/25 |
TSCA | Yes |
HS Code | 28417010 |
MSDS Information |
Provider | Language |
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ACROS | English |
ALFA | English |
Ammonium dimolybdate Usage And Synthesis |
Physical Properties | Colorless, monoclinic crystal; density 2.276 g/cm3; decomposes on heating; soluble in water (decomposes); also soluble in acid; insoluble in alcohol and liquid ammonia. |
Uses | Ammonium molybdates are used to prepare high purity grade molybdenum metal powder, sheet, or wire; for colorimetric analysis of phosphates and arsenates; for decorating ceramics; and as catalysts. |
Preparation | Ammonium molybdate is prepared by treating molybdenum oxide with excess ammonia in an aqueous solution. The crystals are obtained after evaporation of water. MoO3 + 2NH3 + H2O → (NH4)2MoO4 |
Reactions | Decomposes on heating or on treatment with alkalies; reacts with lead chloride and other metal salts to form their metal molybdates: (NH4)2MoO4 + PbCl2 → PbMoO4 + 2NH4Cl Reacts with phosphates or arsenates to form ammonium phosphomolybdate (NH4)3PO4?12MoO3, or ammonium arsenomolybdate, (NH4)3AsO4?12MoO3. |
Chemical Properties | white powder(s); obtained by crystallization from a solution of MoO3 containing excess NH3; used as a high purity source for the preparation of Mo metal [KIR8l] [ALF93] |