| Identification | More | [Name]
Ammonium molybdate tetrahydrate | [CAS]
12054-85-2 | [Synonyms]
AMMONIUM HEPTA MOLYBDATE, HYDROUS
AMMONIUM HEPTAMOLYBDATE TETRAHYDRATE
AMMONIUM MOLYBDATE
AMMONIUM MOLYBDATE-4 H2O
AMMONIUM MOLYBDATE, 4-HYDRATE
AMMONIUM MOLYBDATE (PARA) TETRAHYDRATE
AMMONIUM MOLYBDATE TETRAHYDRATE
AMMONIUM MOLYBDATE(VI) TETRAHYDRATE
HEXA-AMMONIUM HEPTAMOLYBDATE-4-HYDRATE
HEXAAMMONIUM HEPTAMOLYBDATE TETRAHYDRATE
HEXAMMONIUM HEPTAMOLYBDATE
HEXAMMONIUM HEPTAMOLYBDATE 4-HYDRATE
MOLYBDIC ACID, AMMONIUM SALT
MOLYBDIC ACID AMMONIUM SALT TETRAHYDRATE
Molybdate(6-),hexaammonium,tetrahydrate
Ammonium heptamolybate
AMMONIUM MOLYBDATE TETRAHYDRATE ACS &
AMMONIUM HEPTAMOLYBDATE TETRAHYDRATE, A.C.S. REAGENT
MOLYBDIC ACID AMMONIUM CELL CULTURE*TEST ED
AMMONIUM MOLYBDATE TETRAHYDRATE USP | [EINECS(EC#)]
234-320-9 | [Molecular Formula]
H16MoN2O8 | [MDL Number]
MFCD00167059 | [Molecular Weight]
268.08 | [MOL File]
12054-85-2.mol |
| Chemical Properties | Back Directory | [Appearance]
white crystalline powder | [Melting point ]
190 °C
| [Boiling point ]
190°C | [bulk density]
800kg/m3 | [density ]
2.498 g/mL at 25 °C(lit.)
| [storage temp. ]
Inert atmosphere,Room Temperature | [solubility ]
H2O: 0.05 M at 20 °C, clear, colorless
| [form ]
Solid | [color ]
White to yellow-green | [Odor]
Odorless | [PH]
4.0-5.5 (25℃, 0.05M in H2O) | [PH Range]
5 - 5.5 | [Stability:]
Stable. Incompatible with strong acids, strong oxidizing agents. | [Water Solubility ]
400 g/L (20 ºC) | [Merck ]
14,533 | [Exposure limits]
ACGIH: TWA 0.5 mg/m3
NIOSH: IDLH 1000 mg/m3 | [CAS DataBase Reference]
12054-85-2(CAS DataBase Reference) | [EPA Substance Registry System]
12054-85-2(EPA Substance) | [Absorption]
cut-off at 360nm in H2O at 0.05M |
| Safety Data | Back Directory | [Hazard Codes ]
Xi,Xn | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin .
R22:Harmful if swallowed.
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S37/39:Wear suitable gloves and eye/face protection .
S36/37:Wear suitable protective clothing and gloves .
S36:Wear suitable protective clothing . | [RIDADR ]
3288 | [WGK Germany ]
1
| [RTECS ]
QA5076000
| [TSCA ]
Yes | [HazardClass ]
8 | [HS Code ]
28417000 |
| Questions And Answer | Back Directory | [Description]
Ammonium molybdate tetrahydrate (also referred to as Ammonium heptamolybdate, chemical formula: (NH4)6Mo7O24)), appearing as a colorless solid. It can be manufactured through dissolving the molybdenum trioxide in excess amount of aqueous ammonia and evaporating the solution at the room temperature. It has many applications, e.g. as an analytic reagent for measuring content of phosphates, silicates, arsenates and lead; for the production of molybdenum metal and ceramics; for the production of dehydrogenation and desulphurization catalysts; for the fixing of metals; for electroplating; supplement in the crop fertilizer; as a negative stain in biological electron microscopy; as an analgesic in medical fields. | [References]
https://en.wikipedia.org/wiki/Ammonium_heptamolybdate
https://www.alfa.com/zh-cn/catalog/A13766/
|
| Hazard Information | Back Directory | [Chemical Properties]
White, crystalline powder. Soluble in water; insoluble in alcohol. Nonflammable. | [Uses]
Determination of phosphates, arsenates, and lead. | [General Description]
Ammonium molybdate tetrahydrate (AMT) is a molybdenum salt. Study of its extraction from nickel-molybdenum (Ni–Mo) ore by direct hydrometallurgical method has been reported. Its degradation by combustion to form elemental molybdenum powder using metallic reducers has been investigated. | [Hazard]
Irritant. | [reaction suitability]
reagent type: catalyst
core: molybdenum | [Toxics Screening Level]
The screening level for the elemental molybdenum and insoluble molybdenum compounds is 30 μg/m3, while the screening level for soluble molybdenum compounds is 5 μg/m3 based on an 8 hour averaging time. |
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