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Taizhou Nanstar Tungsten Products Factory
Taizhou Nanstar Tungsten Products Factory
16 YRS
Jiangsu, China
Main Products:
Sodium Tungstate Dihydrate / Sodium Tungstate / Tungstic Acid / Ammonium Paratungstate / Sodium Molybdate / Ammonium Molybdate / Ammonium Molybdate / Ammonium Dimolybdate / Ammonium Heptamolybdate / Tungsten Trioxide / Molybdenum iron / Barium Tetraoxomolybdate / Molybdenum Trioxide
Jiangsu, China
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Sodium Tungstate Dihydrate
Sodium Tungstate
Tungstic Acid
Ammonium Paratungstate
Ammonium Paratungstate
Sodium Molybdate
Ammonium Molybdate
Ammonium tetramolybdate
Ammonium Dimolybdate
Hexaammonium Molybdate
Ammonium Heptamolybdate
Tungsten Trioxide
Molybdenum iron
Barium Tetraoxomolybdate
Molybdenum Trioxide
Ammonium Dimolybdate / CAS 27546-07-2
OVERVIEW
Uses
Packaging
25 KG/Fibre Drum
Lead Time
14-30 days
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DESCRIPTION
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. | |
Typical Properties
Summary
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.
CAS No.
27546-07-2
Formula
H8Mo2N2O7
Molecular Mass
339.99300
Exact Mass
343.84400
PSA
124.45000
Logp
-0.24940
Attribute classification
Matter Classification
organic
Category
Inorganic Chemicals > Inorganic Salt
Chemical and Physical Properties
Melting Point
300 °C
Density
3.1
Appearance
White powder
Export information
HS Code
28417010
Export Rebate
0%
Export Formalities
4,x,y
UN No.
0.0
DG-Class
0.0
Risk Code
R36/37/38
Safety Label
Xi
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