Ammonium Dimolybdate

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CAS NO.： 27546-07-2

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Specification： Mo≥56%；Si≤0.0006%; Mo≥56%；Si≤0.001%

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Lead Time： 14-30 days

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Product Detail

Properties

Ammonium Dimolybdate

Product name:		Ammonium dimolybdate
CAS no.:		27546-07-2
Molecular formula:		(NH4)₂Mo₂O₇
Molecular weight:		339.95
Structural formula:
Item	ADM-1	ADM-2
Mo	≥56	≥56
Si	≤0.0006	≤0.001
Al	≤0.0006	≤0.0008
Fe	≤0.0006	≤0.0008
Cu	≤0.0003	≤0.0005
Mg	≤0.0006	≤0.0010
Ni	≤0.0003	≤0.0005
Mn	≤0.0003	≤0.0006
P	≤0.0005	≤0.0005
K	≤0.01	≤0.08
Na	≤0.001	≤0.003
Ca	≤0.0008	≤0.001
Pb	≤0.0005	≤0.0005
Sn	≤0.0005	≤0.0005
W	≤0.020	≤0.080
Properties:		Common name: ADM, (NH4)₂Mo₂O₇. White powdery crystal, in visible inclusions. Easily soluble in water and alkali, insoluble in alcohol and acetone.

Properties

Ammonium dimolybdate (ADM) is the inorganic compound with the formula (NH4)2Mo2O7. It is a white, water-soluble solid. ADM is an intermediate in the production of molybdenum compounds from its ores. Roasting typical ore produces crude molybdenum(VI) oxides, which can be extracted into aqueous ammonia, affording ammonium molybdate. Heating solutions of ammonium molybdate gives ADM. Upon heating the solid, ammonium dimolybdate decomposes to molybdenum trioxide: (NH4)2Mo2O7 → 2 MoO3 + 2 NH3 + H2O In terms of its chemical structure, it is a polymeric consisting of distorted octahedral Mo centers liked by tetrahedral molybdate centers.

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Ammonium Dimolybdate