AMMONIUM HEPTAMOLYBDATE (AMONYUM HEPTAMOLBDAT)
AMMONIUM HEPTAMOLYBDATE (AMONYUM HEPTAMOLBDAT)
CAS No.: 12027-67-7
EC No.: 234-320-9
Synonyms:
AMMONIUM HEPTAMOLYBDATE; AMONYUM HEPTAMOLBDAT; Hexaammonium molybdate; Ammonium molybdate(VI); Ammonium molybdenum oxide; Molybdic acid, diammonium salt; Ammonium molybdate (para); Ammonium paramolybdate; Molybdic acid ammonium salt; Dihydroxy(dioxo)molybdenum – trioxomolybdenum ammoniate; CAS 11098-84-3; AMMONIUM HEPTAMOLYBDATE; AMMONIUM MOLYBDATE; AMMONIUM MOLYBDATE (PARA); AMMONIUM MOLYBDATE REAGENT 1; AMMONIUM MOLYBDATE REAGENT I; AMMONIUM MOLYBDATE REAGENT II; AMMONIUM PARAMOLYBDATE; AMMONIUM-P-MOLYBDATE; HEXAAMMONIUM MOLYBDATE; MOLYBDIC ACID AMMONIUM SALT; NPW-150 AMMONIUM MOLYBDATE MIXTURE; PHOSPHATE MONITOR FIRST REAGENT; PHOSPHATE MONITOR REDUCTION REAGENT; PHOSPHATE MONITOR REDUCTION SOLUTION; PHOSPHATE MONITOR SECOND REAGENT; Ammoinumheptamolybdate; ammoniumheptamolybdate((nh4)6mo7o24); ammoniummolybdate((nh4)6(mo7o24)); ammoniummolybdate(ii)((nh4)6mo7o24); ammoniummolybdate(vi); ammonium molybdate(VI); azane;molybdenum;tetracosahydrate; hexaammonium heptamolybdate; hexammonium tetracosaoxoheptamolybdate; molybdate, hexaammonium (9CI); molybdic acid, hexaammonium salt; 12027-67-7; 21Y68J178E; Ammonium molybdate(VI); Ammonium paramolybdate; Hexaammonium heptamolybdate; Molybdate, hexaammonium (9CI); Molybdic acid, hexaammonium salt; Molybdate (Mo7O246-), ammonium (1:6); Molybdate (Mo7O246-), hexaammonium; Ammonium heptamolybdate; Ammonium heptamolybdate ((NH4)6Mo7O24); Ammonium molybdate; Ammonium molybdate ((NH4)6(Mo7O24)); Ammonium molybdate(VI) ((NH4)6Mo7O24); Ammonium paramolybdate ((NH4)6Mo7O24); EINECS 234-722-4; Hexammonium tetracosaoxoheptamolybdate; HSDB 1802; Molybdate (Mo7O24), hexammonium; Molybdic acid (H6Mo7O24), hexaammonium salt; PM 20; Hexammonium heptamolybdat; UNII-21Y68J178E; TF 2000; Ammonium molybdate (VI); EC 234-722-4; Hexaammonium molybdate; 12027-67-7; AMMON MOLYBDATE REAG 500GM; Ammonium heptamolybdate tetrahydrate (81.0 – 83.0% MoO3), crystals, BAKER ANALYZED(R) ACS, J.T. Baker(R); 12027-67-7; MFCD00011596; Ammonium molybdate; Ammonium paramolybdate tetrahydrate; Molybdic Acid Ammonium Salt Tetrahydrate; Ammonium molybdate(VI) tetrahydrate; Ammonium molybdate tetrahydrate; Ammonium heptamolybdate 4-hydrate; Hexaammonium heptamolybdate 4-hydrate; Ammonium paramolybdate 4-hydrate; Hexaammonium heptamolybdate tetrahydrate; Ammonium molybdate (para) 4-hydrate; Ammonium molybdate (para) tetrahydrate; Ammonium heptamolybdate tetrahydrate; Ammonium molybdate; Hexammonium heptamolybdate 4-hydrate; AMMONIUM HEPTAMOLYBDATE; AMONYUM HEPTAMOLBDAT; Hexaammonium molybdate; Ammonium molybdate(VI); Ammonium molybdenum oxide; Molybdic acid, diammonium salt; Ammonium molybdate (para); Ammonium paramolybdate; Molybdic acid ammonium salt; Dihydroxy(dioxo)molybdenum – trioxomolybdenum ammoniate; CAS 11098-84-3; AMMONIUM HEPTAMOLYBDATE; AMMONIUM MOLYBDATE; AMMONIUM MOLYBDATE (PARA); AMMONIUM MOLYBDATE REAGENT 1; AMMONIUM MOLYBDATE REAGENT I; AMMONIUM MOLYBDATE REAGENT II; AMMONIUM PARAMOLYBDATE; AMMONIUM-P-MOLYBDATE; HEXAAMMONIUM MOLYBDATE; MOLYBDIC ACID AMMONIUM SALT; NPW-150 AMMONIUM MOLYBDATE MIXTURE; PHOSPHATE MONITOR FIRST REAGENT; PHOSPHATE MONITOR REDUCTION REAGENT; PHOSPHATE MONITOR REDUCTION SOLUTION; PHOSPHATE MONITOR SECOND REAGENT; Ammoinumheptamolybdate; ammoniumheptamolybdate((nh4)6mo7o24); ammoniummolybdate((nh4)6(mo7o24)); ammoniummolybdate(ii)((nh4)6mo7o24); ammoniummolybdate(vi); ammonium molybdate(VI); azane;molybdenum;tetracosahydrate; hexaammonium heptamolybdate; hexammonium tetracosaoxoheptamolybdate; molybdate, hexaammonium (9CI); molybdic acid, hexaammonium salt; 12027-67-7; 21Y68J178E; Ammonium molybdate(VI); Ammonium paramolybdate; Hexaammonium heptamolybdate; Molybdate, hexaammonium (9CI); Molybdic acid, hexaammonium salt; Molybdate (Mo7O246-), ammonium (1:6); Molybdate (Mo7O246-), hexaammonium; Ammonium heptamolybdate; Ammonium heptamolybdate ((NH4)6Mo7O24); Ammonium molybdate; Ammonium molybdate ((NH4)6(Mo7O24)); Ammonium molybdate(VI) ((NH4)6Mo7O24); Ammonium paramolybdate ((NH4)6Mo7O24); EINECS 234-722-4; Hexammonium tetracosaoxoheptamolybdate; HSDB 1802; Molybdate (Mo7O24), hexammonium; Molybdic acid (H6Mo7O24), hexaammonium salt; PM 20; Hexammonium heptamolybdat; UNII-21Y68J178E; TF 2000; Ammonium molybdate (VI); EC 234-722-4; Hexaammonium molybdate; 12027-67-7; AMMON MOLYBDATE REAG 500GM; Ammonium heptamolybdate tetrahydrate (81.0 – 83.0% MoO3), crystals, BAKER ANALYZED(R) ACS, J.T. Baker(R); 12027-67-7; MFCD00011596; Ammonium molybdate; Ammonium paramolybdate tetrahydrate; Molybdic Acid Ammonium Salt Tetrahydrate; Ammonium molybdate(VI) tetrahydrate; Ammonium molybdate tetrahydrate; Ammonium heptamolybdate 4-hydrate; Hexaammonium heptamolybdate 4-hydrate; Ammonium paramolybdate 4-hydrate; Hexaammonium heptamolybdate tetrahydrate; Ammonium molybdate (para) 4-hydrate; Ammonium molybdate (para) tetrahydrate; Ammonium heptamolybdate tetrahydrate; Ammonium molybdate; Hexammonium heptamolybdate 4-hydrate
AMMONIUM HEPTAMOLYBDATE
Ammonium heptamolybdate(Amonyum Heptamolibdat)
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Ammonium heptamolybdate(Amonyum Heptamolibdat)
Heptamolybdenan amonný.JPG
Names
IUPAC name
Ammonium docosaoxoheptamolybdate(6–)
Ammonium heptamolybdate(Amonyum Heptamolibdat)Other names
Ammonium molybdate
Ammonium paramolybdate
Ammonium heptamolybdate(Amonyum Heptamolibdat)(see text)
Identifiers
Ammonium heptamolybdate(Amonyum Heptamolibdat)CAS Number
12027-67-7 ☑
12054-85-2 (tetrahydrate) ☒
3D model (JSmol)
Interactive image
Interactive image
ChemSpider
23786 ☑
ECHA InfoCard 100.031.553 Edit this at Wikidata
Ammonium heptamolybdate(Amonyum Heptamolibdat)EC Number
234-320-9
Ammonium heptamolybdate(Amonyum Heptamolibdat)PubChem CID
71306766
UNII
21Y68J178E ☑
CompTox Dashboard (EPA)
Ammonium heptamolybdate(Amonyum Heptamolibdat)DTXSID5036896 Edit this at Wikidata
Ammonium heptamolybdate(Amonyum Heptamolibdat)InChI[show]
Ammonium heptamolybdate(Amonyum Heptamolibdat)SMILES[show]
Ammonium heptamolybdate(Amonyum Heptamolibdat)Properties
Chemical formula (NH4)6Mo7O24
Ammonium heptamolybdate(Amonyum Heptamolibdat)Molar mass 1163.9 g/mol
1235.86 g/mol (tetrahydrate)
Appearance white solid
Density 2.498 g/cm3
Ammonium heptamolybdate(Amonyum Heptamolibdat)Melting point ~90 ˚C (loses water molecule)
190 °C (decomp.)
Solubility in water 65.3 g / 100 ml (tetrahydrate)
Hazards
Ammonium heptamolybdate(Amonyum Heptamolibdat)Main hazards Irritant
Safety data sheet External MSDS
NFPA 704 (fire diamond)
Ammonium heptamolybdate(Amonyum Heptamolibdat)NFPA 704 four-colored diamond
020
Flash point Non-flammable
Related compounds
Other anions Ammonium orthomolybdate
Ammonium dimolybdate
Other cations Potassium paramolybdate
Related compounds Molybdenum(VI) oxide
Molybdic acid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
Ammonium heptamolybdate(Amonyum Heptamolibdat) is the inorganic compound whose chemical formula is (NH4)6Mo7O24, normally encountered as the tetrahydrate. A dihydrate is also known. It is a colorless solid, often referred to as ammonium paramolybdate or simply as ammonium molybdate, although “ammonium molybdate” can also refer to ammonium orthomolybdate, (NH4)2MoO4, and several other compounds. It is one of the more common molybdenum compounds.[1]
Ammonium heptamolybdate(Amonyum Heptamolibdat)
Product #
Description
A7302 Ammonium heptamolybdate, ACS reagent, 81.0-83.0% MoO3 basis,
09878 Ammonium heptamolybdate, BioUltra, ≥99.0% (T),
431346 Ammonium heptamolybdate, ACS reagent, 99.98% trace metals basis,
M1019 Ammonium heptamolybdate, BioReagent, suitable for cell culture, suitable for insect cell culture, 81.0-83.0% MoO3 basis
Contents
1Synthesis
2Structure
3Uses
4Related compounds
5Safety
6References
7See also
Synthesis
Ammonium heptamolybdate(Amonyum Heptamolibdat) is easily prepared by dissolving molybdenum trioxide in an excess of aqueous ammonia and evaporating the solution Ammonium heptamolybdate(Amonyum Heptamolibdat)at room temperature. While the solution evaporates, the excess of ammonia escapes. This method results in the formation of six-sided transparent prisms of the tetrahydrate of Ammonium heptamolybdate(Amonyum Heptamolibdat).[2]
Ammonium heptamolybdate(Amonyum Heptamolibdat)Solutions of ammonium paramolybdate react with acids to form molybdic acid and an ammonium salt. The pH value of a concentrated solution will lie between 5 and 6.
Structure
Ammonium heptamolybdate(Amonyum Heptamolibdat)The compound was first analyzed crystallographically by Lindqvist, but has been reanalyzed.[3] All Mo centers are octahedral. Some oxide ligands are terminal, some doubly bridging, and a few are triply bridging ligands.
Ammonium heptamolybdate(Amonyum Heptamolibdat)The salt contains the heptamolybdate hexaanion.
Uses
as an analytical reagent to measure the amount of phosphates, silicates, arsenates and lead in aqueous solution (e.g. pigments, river water, sea water etc.)[4]
Ammonium heptamolybdate(Amonyum Heptamolibdat)in the production of molybdenum metal and ceramics
Ammonium heptamolybdate(Amonyum Heptamolibdat)in the preparation of dehydrogenation and desulfurization catalysts
Ammonium heptamolybdate(Amonyum Heptamolibdat)in the fixing of metals
Ammonium heptamolybdate(Amonyum Heptamolibdat)in electroplating
Ammonium heptamolybdate(Amonyum Heptamolibdat)in fertilizers for crops.
as a negative stain in biological electron microscopy, typically in the 3–5% (vol/vol) concentration range and in the presence of trehalose;[5] or at saturated concentration to perform cryo-negative staining.[6][7]
For the detection of recreational drugs as a component of the Froehde reagent
Related compounds
Potassium heptamolybdate, also obtained as the tetrahydrate, is very similar to the ammonium salt.[3]
Safety
Molybdates are typically of low toxicity, so much so that few reports of incidents have ever been reported.[1
Ammonium heptamolybdate(Amonyum Heptamolibdat)
CAS #: 12027-67-7
Linear Formula: (NH4)6Mo7O24
MDL Number: MFCD00064633 EC No.: 234-320-9
PRODUCT Product Code ORDER SAFETY DATA TECHNICAL DATA
(2N) 99% Ammonium heptamolybdate(Amonyum Heptamolibdat)
AM-MOAT7-02-C
Pricing > SDS > Data Sheet >
(3N) 99.9% Ammonium heptamolybdate(Amonyum Heptamolibdat)
AM-MOAT7-03-C
Pricing > SDS > Data Sheet >
(4N) 99.99% Ammonium heptamolybdate(Amonyum Heptamolibdat)
AM-MOAT7-04-C
Pricing > SDS > Data Sheet >
(5N) 99.999% Ammonium heptamolybdate(Amonyum Heptamolibdat)
AM-MOAT7-05-C
Pricing > SDS > Data Sheet >
WHOLESALE/SKU 0000-742-269447
Question? Ask an American Elements Materials Science Engineer
Ammonium heptamolybdate(Amonyum Heptamolibdat) Properties (Theoretical)
Compound Formula H24Mo7N6O24
Molecular Weight 1163.9
Appearance White to off-white powder or crystals
Melting Point 190 °C
Boiling Point N/A
Density 2.498 g/cm3
Solubility in H2O N/A
Exact Mass 1167.425807 g/mol
Monoisotopic Mass 1177.42202 g/mol
Ammonium heptamolybdate(Amonyum Heptamolibdat) Health & Safety Information
Signal Word N/A
Hazard Statements N/A
Hazard Codes N/A
RTECS Number QA5076000
Transport Information NONH for all modes of transport
WGK Germany 1
MSDS / SDS Request MSDS / SDS
Ammonium heptamolybdate(Amonyum Heptamolibdat)About Ammonium heptamolybdate(Amonyum Heptamolibdat)
Ammonium heptamolybdate(Amonyum Heptamolibdat) (or Hexaamonium Molybdate) is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.
Ammonium heptamolybdate(Amonyum Heptamolibdat) Synonyms
Hexaammonium molybdate; Ammonium molybdate(VI); Ammonium molybdenum oxide; Molybdic acid, diammonium salt; Ammonium molybdate (para); Ammonium paramolybdate; Molybdic acid ammonium salt; Dihydroxy(dioxo)molybdenum – trioxomolybdenum ammoniate; CAS 11098-84-3
Chemical Identifiers
Ammonium heptamolybdate(Amonyum Heptamolibdat)Linear Formula (NH4)6Mo7O24
Ammonium heptamolybdate(Amonyum Heptamolibdat)MDL Number MFCD00064633
Ammonium heptamolybdate(Amonyum Heptamolibdat)EC No. 234-320-9
Pubchem CID 44134832
IUPAC Name azane; dihydroxy(dioxo) molybdenum; trioxomolybdenum
SMILES N.N.N.N.N.N.O[Mo](=O)(=O)O.O[Mo](=O)(=O)O.O[Mo](=O)(=O)O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O
InchI Identifier
InchI Key PTPRBYUXSYJORU-UHFFFAOYSA-H
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Ammonium Molybdate Tetrahydrate
Ammonium Tetrathiomolybdate
Related Applications, Forms & Industries for Ammonium heptamolybdate(Amonyum Heptamolibdat)
Abstract
Ammonium heptamolybdate(Amonyum Heptamolibdat)Thermal decomposition (2 K min⁻¹) of Ammonium heptamolybdate(Amonyum Heptamolibdat) tetrahydrate, performed between room temperature and 700 °C at a relatively low He flow (30 mL min⁻¹), has been monitored by mass spectrometry and thermogravimetry. Mass spectrometry revealed that partial pressures of ammonia and water decomposition products and, therefore, the different decomposition steps depended on the carrier gas flow. However, at higher temperatures (T > 440 °C), gaseous ammonia decomposes into hydrogen, leading to the formation of Mo4O11 like decomposition product. In the presence of NH4⁺–ZSM-5 zeolite, molecular oxygen evolves and the formation of Mo4O11 is, therefore, inhibited. Nonetheless, MoO3(s) evolves towards gaseous MoO2(OH)2 in the presence of water vapour. The non-isothermal solid-state ion exchange of gaseous MoO2(OH)2 into zeolite is preferable between 455 and 520 °C. On the other hand, the isothermal exchange at 500 °C for 12 h does not affect the zeolite structure as revealed by nuclear magnetic resonance of ²⁷Al.
Abstract
Ammonium heptamolybdate(Amonyum Heptamolibdat)THERMAL decomposition investigations1,2 have shown that Ammonium heptamolybdate(Amonyum Heptamolibdat) tetrahydrate gives three endothermic peaks on differential thermal analysis, four different crystalline states on X-ray analysis with a Guinier focusing camera, and four steps corresponding to them on thermo-gravimetric analysis. The first endothermic peak corresponds to dehydration, and the second and third to loss of ammonium. In general, hydrates of poly acids are classified as containing structural water only3. In the case of Ammonium heptamolybdate(Amonyum Heptamolibdat) tetrahydrate, however, the dehydration takes place without a change in the structure at first, and is eventually followed by structural Ammonium heptamolybdate(Amonyum Heptamolibdat)collapse at the end of the dehydration. Some of the water molecules, therefore, seem to have a coordinating function. It seems likely that the stepwise deammoniation is due to two types of ammonium ions in the structure. To interpret the results of these thermal decomposition Ammonium heptamolybdate(Amonyum Heptamolibdat)investigations from the standpoint of crystal chemistry, a complete structural analysis of Ammonium heptamolybdate(Amonyum Heptamolibdat) tetrahydrate is required.
Ammonium heptamolybdate(Amonyum Heptamolibdat) is the inorganic compound whose chemical formula is (NH4)6Mo7O24, normally encountered as the tetrahydrate. A dihydrate Ammonium heptamolybdate(Amonyum Heptamolibdat)is also known. It is a colorless solid, often referred to as ammonium paramolybdate or simply as ammonium molybdate, although “ammonium molybdate” can also refer to ammonium orthomolybdate, (NH4)2MoO4, and several other compounds. It is one of the more common molybdenum compounds.[1]
Ammonium heptamolybdate(Amonyum Heptamolibdat)
Product #
Description
A7302 Ammonium heptamolybdate, ACS reagent, 81.0-83.0% MoO3 basis,
09878 Ammonium heptamolybdate, BioUltra, ≥99.0% (T),
431346 Ammonium heptamolybdate, ACS reagent, 99.98% trace metals basis,
M1019 Ammonium heptamolybdate, BioReagent, suitable for cell culture, suitable for insect cell culture, 81.0-83.0% MoO3 basis
Contents
Ammonium heptamolybdate(Amonyum Heptamolibdat)1Synthesis
Ammonium heptamolybdate(Amonyum Heptamolibdat)2Structure
Ammonium heptamolybdate(Amonyum Heptamolibdat)3Uses
Ammonium heptamolybdate(Amonyum Heptamolibdat)4Related compounds
Ammonium heptamolybdate(Amonyum Heptamolibdat)5Safety
Ammonium heptamolybdate(Amonyum Heptamolibdat)6References
Ammonium heptamolybdate(Amonyum Heptamolibdat)7See also
Synthesis
Ammonium heptamolybdate(Amonyum Heptamolibdat) is easily prepared by dissolving molybdenum trioxide in an excess of aqueous ammonia and evaporating the solution at room temperature. While the solution evaporates, the excess of ammonia escapes. This method results in the formation of six-sided transparent prisms of the tetrahydrate of Ammonium heptamolybdate(Amonyum Heptamolibdat).[2]
Ammonium heptamolybdate(Amonyum Heptamolibdat)
Solutions of ammonium paramolybdate react with acids to form molybdic acid and an ammonium salt. The pH value of a concentrated solution will lie between 5 and 6.
Ammonium heptamolybdate(Amonyum Heptamolibdat)
Structure
The compound was first analyzed crystallographically by Lindqvist, but has been reanalyzed.[3] All Mo centers are octahedral. Some oxide ligands are terminal, some doubly bridging, and a few are triply bridging ligands.
Ammonium heptamolybdate(Amonyum Heptamolibdat)
The salt contains the heptamolybdate hexaanion.
Uses
as an analytical reagent to measure the amount of phosphates, silicates, arsenates and lead in aqueous solution (e.g. pigments, river water, sea water etc.)[4]
Ammonium heptamolybdate(Amonyum Heptamolibdat)in the production of molybdenum metal and ceramics
Ammonium heptamolybdate(Amonyum Heptamolibdat)in the preparation of dehydrogenation and desulfurization catalysts
Ammonium heptamolybdate(Amonyum Heptamolibdat)in the fixing of metals
Ammonium heptamolybdate(Amonyum Heptamolibdat)in electroplating
Ammonium heptamolybdate(Amonyum Heptamolibdat)in fertilizers for crops.
Ammonium heptamolybdate(Amonyum Heptamolibdat)as a negative stain in biological electron microscopy, typically in the 3–5% (vol/vol) concentration range and in the presence of trehalose;[5] or at saturated concentration to perform cryo-negative staining.[6][7]
For the detection of recreational drugs as a component of the Froehde reagent
Related compounds
Potassium heptamolybdate, also obtained as the tetrahydrate, is very similar to the ammonium salt.[3]
Ammonium heptamolybdate(Amonyum Heptamolibdat)
Safety
Molybdates are typically of low toxicity, so much so that few reports of incidents have ever been reported.[1
Ammonium heptamolybdate(Amonyum Heptamolibdat)
CAS #: 12027-67-7
Linear Formula: (NH4)6Mo7O24
MDL Number: MFCD00064633 EC No.: 234-320-9
PRODUCT Product Code ORDER SAFETY DATA TECHNICAL DATA
(2N) 99% Ammonium heptamolybdate(Amonyum Heptamolibdat)
AM-MOAT7-02-C
Pricing > SDS > Data Sheet >
(3N) 99.9% Ammonium heptamolybdate(Amonyum Heptamolibdat)
AM-MOAT7-03-C
Pricing > SDS > Data Sheet >
(4N) 99.99% Ammonium heptamolybdate(Amonyum Heptamolibdat)
AM-MOAT7-04-C
Pricing > SDS > Data Sheet >
(5N) 99.999% Ammonium heptamolybdate(Amonyum Heptamolibdat)
AM-MOAT7-05-C
Pricing > SDS > Data Sheet >
WHOLESALE/SKU 0000-742-269447
Question? Ask an American Elements Materials Science Engineer
Ammonium heptamolybdate(Amonyum Heptamolibdat) Properties (Theoretical)
Compound Formula H24Mo7N6O24
Molecular Weight 1163.9
Appearance White to off-white powder or crystals
Melting Point 190 °C
Boiling Point N/A
Density 2.498 g/cm3
Solubility in H2O N/A
Exact Mass 1167.425807 g/mol
Monoisotopic Mass 1177.42202 g/mol
Ammonium heptamolybdate(Amonyum Heptamolibdat) Health & Safety Information
Signal Word N/A
Hazard Statements N/A
Hazard Codes N/A
RTECS Number QA5076000
Transport Information NONH for all modes of transport
WGK Germany 1
MSDS / SDS Request MSDS / SDS
About Ammonium heptamolybdate(Amonyum Heptamolibdat)
Ammonium heptamolybdate(Amonyum Heptamolibdat) (or Hexaamonium Molybdate) is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.
Ammonium heptamolybdate(Amonyum Heptamolibdat) Synonyms
Hexaammonium molybdate; Ammonium molybdate(VI); Ammonium molybdenum oxide; Molybdic acid, diammonium salt; Ammonium molybdate (para); Ammonium paramolybdate; Molybdic acid ammonium salt; Dihydroxy(dioxo)molybdenum – trioxomolybdenum ammoniate; CAS 11098-84-3
Chemical Identifiers
Linear Formula (NH4)6Mo7O24
MDL Number MFCD00064633
EC No. 234-320-9
Pubchem CID 44134832
IUPAC Name azane; dihydroxy(dioxo) molybdenum; trioxomolybdenum
SMILES N.N.N.N.N.N.O[Mo](=O)(=O)O.O[Mo](=O)(=O)O.O[Mo](=O)(=O)O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O
InchI Identifier
InchI Key PTPRBYUXSYJORU-UHFFFAOYSA-H
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Ammonium Phosphomolybdate Hydrate
Ammonium Molybdate Tetrahydrate
Ammonium Tetrathiomolybdate
Related Applications, Forms & Industries for Ammonium heptamolybdate(Amonyum Heptamolibdat)
Abstract
Ammonium heptamolybdate(Amonyum Heptamolibdat)Thermal decomposition (2 K min⁻¹) of Ammonium heptamolybdate(Amonyum Heptamolibdat) tetrahydrate, performed between room temperature and 700 °C at a relatively low He flow (30 mL min⁻¹), has been monitored by mass spectrometry and thermogravimetry. Mass spectrometry revealed that partial pressures of ammonia and water decomposition products and, therefore, the different decomposition steps depended on the carrier gas flow. However, at higher temperatures (T > 440 °C), gaseous ammonia decomposes into hydrogen, leading to the formation of Mo4O11 like decomposition product. In the presence of NH4⁺–ZSM-5 zeolite, molecular oxygen evolves and the formation of Mo4O11 is, therefore, Ammonium heptamolybdate(Amonyum Heptamolibdat)inhibited. Nonetheless, MoO3(s) evolves towards gaseous MoO2(OH)2 in the presence of water vapour. The non-isothermal solid-state ion exchange of gaseous MoO2(OH)2 into zeolite is preferable between 455 and 520 °C. Ammonium heptamolybdate(Amonyum Heptamolibdat)On the other hand, the isothermal exchange at 500 °C for 12 h does not affect the zeolite structure as revealed by nuclear magnetic resonance of ²⁷Al.
Abstract
Ammonium heptamolybdate(Amonyum Heptamolibdat)THERMAL decomposition investigations1,2 have shown that Ammonium heptamolybdate(Amonyum Heptamolibdat) tetrahydrate gives three endothermic peaks on differential thermal analysis, four different crystalline states on X-ray analysis with a Guinier focusing camera, and four steps corresponding to them on thermo-gravimetric analysis. The first endothermic peak corresponds to dehydration, and the second and third to loss of ammonium. In general, hydrates of poly acids are classified as containing structural water only3. In the case of Ammonium heptamolybdate(Amonyum Heptamolibdat) tetrahydrate, however, the dehydration takes place without a change in Ammonium heptamolybdate(Amonyum Heptamolibdat)the structure at first, and is eventually followed by structural collapse at the end of the dehydration. Some of the water molecules, therefore, seem to have a coordinating function. It seems likely that Ammonium heptamolybdate(Amonyum Heptamolibdat)the stepwise deammoniation is due to two types of ammonium ions in the structure. To interpret the results of these thermal decomposition investigations from the standpoint of crystal chemistry, a complete structural analysis of Ammonium heptamolybdate(Amonyum Heptamolibdat) tetrahydrate is required.
Ammonium heptamolybdate(Amonyum Heptamolibdat)
Product #
Description
A7302 Ammonium heptamolybdate, ACS reagent, 81.0-83.0% MoO3 basis,
09878 Ammonium heptamolybdate, BioUltra, ≥99.0% (T),
431346 Ammonium heptamolybdate, ACS reagent, 99.98% trace metals basis,
M1019 Ammonium heptamolybdate, BioReagent, suitable for cell culture, suitable for insect cell culture, 81.0-83.0% MoO3 basis
Ammonium heptamolybdate(Amonyum Heptamolibdat)
AMONYUM HEPTAMOLBDAT
Amonyum heptamolibdat (Ammonium heptamolybdate)
Vikipedi, özgür ansiklopedi
Gezintiye atlaArama yapmak için atla
Amonyum heptamolibdat (Ammonium heptamolybdate)
Heptamolybdenan amonný.JPG
simler
IUPAC ad
Amonyum docosaoxoheptamolybdate (6–)
Dier isimler
Amonyum molibdat
Amonyum paramolibdat
(metne bakn)
Tanmlayclar
CAS numaras
12027-67-7 ☑
12054-85-2 (tetrahidrat) ☒
3B model (JSmol)
Etkileimli görüntü
Etkileimli görüntü
ChemSpider
23786 ☑
ECHA InfoCard 100.031.553 Bunu Vikiveri’de düzenleyin
EC Numaras
234-320-9
PubChem Müteri Kimlii
71306766
UNII
21Y68J178E ☑
CompTox Kontrol Paneli (EPA)
DTXSID5036896 Bunu Vikiveri’de düzenleyin
InChI [gösteri]
SMILES [gösteri]
Özellikleri
Kimyasal formül (NH4) 6Mo7O24
Molar kütle 1163,9 g / mol
1235.86 g / mol (tetrahidrat)
Görünüm beyaz kat
Younluk 2.498 g / cm3
Erime noktas ~ 90˚C (su molekülünü kaybeder)
190 ° C (ayr.)
Suda çözünürlük 65,3 g / 100 ml (tetrahidrat)
Tehlikeler
Balca tehlikeler Tahri edici
Güvenlik bilgi formu Harici MSDS
NFPA 704 (ate elmas)
NFPA 704 dört renkli elmas
020
Parlama noktas Yanc deil
Bantl bileikler
Dier anyonlar Amonyum ortomolibdat
Amonyum dimolibdat
Dier katyonlar Potasyum paramolibdat
lgili bileikler Molibden (VI) oksit
Molibdik asit
Aksi belirtilmedikçe, veriler standart hallerinde (25 ° C [77 ° F], 100 kPa) malzemeler için verilmitir.
☒ dorula (☑☒ nedir?)
Bilgi kutusu referanslar
Amonyum heptamolibdat (Ammonium heptamolybdate), normalde tetrahidrat olarak karlalan kimyasal formülü (NH4) 6Mo7O24 olan inorganik bileiktir. Bir dihidrat da bilinmektedir. Genellikle amonyum paramolibdat veya basitçe amonyum molibdat olarak adlandrlan renksiz bir katdr, ancak “amonyum molibdat” ayn zamanda amonyum ortomolibdat, (NH4) 2MoO4 ve birkaç baka bileii de ifade edebilir. En yaygn molibden bileiklerinden biridir. [1]
Ürün #
Açklama
A7302 Amonyum heptamolibdat, ACS reaktifi,% 81.0-83.0 MoO3 temeli,
09878 Amonyum heptamolibdat, BioUltra, ≥% 99.0 (T),
431346 Amonyum heptamolibdat, ACS reaktifi,% 99.98 eser metaller esas,
M1019 Amonyum heptamolibdat, BioReagent, hücre kültürü için uygun, böcek hücre kültürü için uygun,% 81.0-83.0 MoO3 bazl
çindekiler
1 Sentez
2Yap
3Kullanmlar
4 lgili bileikler
5Güvenlik
6 Kaynaklar
7 Ayrca bkz.
Sentez
Amonyum heptamolibdat (Ammonium heptamolybdate), molibden trioksitin fazla sulu amonyak içinde çözülmesi ve çözeltinin oda scaklnda buharlatrlmasyla kolayca hazrlanr. Çözelti buharlarken fazla amonyak kaçar. Bu yöntem, Amonyum heptamolibdat (Ammonium heptamolybdate) tetrahidratnn alt tarafl effaf prizmalarnn oluumuyla sonuçlanr. [2]
Amonyum paramolibdat çözeltileri, molibdik asit ve bir amonyum tuzu oluturmak için asitlerle reaksiyona girer. Konsantre bir çözeltinin pH deeri 5 ile 6 arasnda olacaktr.
Yaps
Bileik ilk olarak Lindqvist tarafndan kristalografik olarak analiz edilmi, ancak yeniden analiz edilmitir. [3] Tüm Mo merkezleri oktahedraldir. Baz oksit ligandlar terminaldir, bazlar çift köprü oluturur ve birkaç üçlü köprü ligandlardr.
Tuz, heptamolibdat heksaanyonu içerir.
Kullanmlar
sulu çözeltideki fosfat, silikat, arsenat ve kurunun miktarn ölçmek için analitik bir reaktif olarak (örnein pigmentler, nehir suyu, deniz suyu vb.) [4]
molibden metal ve seramik üretiminde
dehidrojenasyon ve kükürt giderme katalizörlerinin hazrlanmasnda
metallerin sabitlenmesinde
elektro kaplamada
mahsuller için gübrelerde.
biyolojik elektron mikroskobunda negatif bir boya olarak, tipik olarak% 3–5 (hacim / hacim) konsantrasyon aralnda ve trehaloz varlnda; [5] veya kriyo-negatif boyama yapmak için doymu konsantrasyonda. [6] [7]
Froehde reaktifinin bir bileeni olarak elence amaçl ilaçlarn tespiti için
Bantl bileikler
Tetrahidrat olarak da elde edilen potasyum heptamolibdat, amonyum tuzuna çok benzer. [3]
Emniyet
Molibdatlar tipik olarak düük toksisiteye sahiptir, öyle ki imdiye kadar çok az olay bildirilmitir. [1
Amonyum heptamolibdat (Ammonium heptamolybdate)
CAS #: 12027-67-7
Dorusal Formül: (NH4) 6Mo7O24
MDL Numaras: MFCD00064633 EC No .: 234-320-9
ÜRÜN Ürün Kodu SPAR GÜVENLK BLGLER TEKNK BLGLER
(2N)% 99 Amonyum heptamolibdat (Ammonium heptamolybdate)
AM-MOAT7-02-C
Fiyatlandrma> SDS> Veri Sayfas>
(3N)% 99.9 Amonyum heptamolibdat (Ammonium heptamolybdate)
AM-MOAT7-03-C
Fiyatlandrma> SDS> Veri Sayfas>
(4N)% 99.99 Amonyum heptamolibdat (Ammonium heptamolybdate)
AM-MOAT7-04-C
Fiyatlandrma> SDS> Veri Sayfas>
(5N)% 99,999 Amonyum heptamolibdat (Ammonium heptamolybdate)
AM-MOAT7-05-C
Fiyatlandrma> SDS> Veri Sayfas>
TOPTAN / SKU 0000-742-269447
Soru? Bir Amerikal Element Malzeme Bilimi Mühendisine Sorun
Amonyum heptamolibdat (Ammonium heptamolybdate) Özellikleri (Teorik)
Bileik Formül H24Mo7N6O24
Moleküler Arlk 1163.9
Görünüm Beyaz ila kirli beyaz toz veya kristaller
Erime Noktas 190 ° C
Kaynama Noktas Yok
Younluk 2.498 g / cm3
H2O’da çözünürlük N / A
Tam Kütle 1167.425807 g / mol
Monoizotopik Kütle 1177.42202 g / mol
Amonyum heptamolibdat (Ammonium heptamolybdate) Salk ve Güvenlik Bilgileri
Sinyal Kelimesi N / A
Tehlike Açklamalar N / A
Tehlike Kodlar N / A
RTECS Numaras QA5076000
Tüm tama türleri için OLMAYAN Nakliye Bilgileri
WGK Almanya 1
MSDS / SDS Talep MSDS / SDS
Amonyum heptamolibdat (Ammonium heptamolybdate) hakknda
Amonyum heptamolibdat (Ammonium heptamolybdate) (veya Heksaamonyum Molibdat) genellikle çou ciltte hemen bulunur. Yüksek saflk, mikron alt ve nano toz formlar düünülebilir. American Elements, uygulanabilir olduunda, Mil Spec (askeri snf) dahil olmak üzere birçok standart snfta üretim yapar; ACS, Reaktif ve Teknik Snf; Gda, Tarm ve laç Derecesi; Optik Snf, USP ve EP / BP (Avrupa Farmakopesi / ngiliz Farmakopesi) ve ilgili ASTM test standartlarn takip eder. Tipik ve özel paketleme mevcuttur. lgili ölçüm birimlerini dönütürmek için bir Referans Hesaplayc olduu gibi ek teknik, aratrma ve güvenlik (MSDS) bilgileri mevcuttur.
Amonyum heptamolibdat (Ammonium heptamolybdate) eanlamllar
Hekzaamonyum molibdat; Amonyum molibdat (VI); Amonyum molibden oksit; Molibdik asit, diamonyum tuzu; Amonyum molibdat (para); Amonyum paramolibdat; Molibdik asit amonyum tuzu; Dihidroksi (diokso) molibden – trioksomolibden amonyak; CAS 11098-84-3
Kimyasal Tanmlayclar
Dorusal Formül (NH4) 6Mo7O24
MDL Numaras MFCD00064633
EC No. 234-320-9
Pubchem Müteri Kimlii 44134832
IUPAC Ad azane; dihidroksi (diokso) molibden; trioksomolibden
SMILES NNNNNO [Mo] (= O) (= O) OO [Mo] (= O) (= O) OO [Mo] (= O) (= O) OO = [Mo] (= O) = OO = [ Mo] (= O) = OO = [Mo] (= O) = OO = [Mo] (= O) = O
InchI Tanmlayc
InchI Anahtar PTPRBYUXSYJORU-UHFFFAOYSA-H
Amonyum heptamolibdat (Ammonium heptamolybdate) Müterileri de nceledi
Amonyum Molibdat Çözeltisi
Amonyum Oktamolibdat
Amonyum Fosfomolibdat
Sodyum Amonyum Trimolibdat Nanotelleri
Amonyum 6-Molibdocobaltate
Amonyum Dimolibdat
Amonyum Fosfomolibdat Hidrat
Amonyum Molibdat Tetrahidrat
Amonyum Tetratiyomolibdat
Amonyum heptamolibdat (Ammonium heptamolybdate) için lgili Uygulamalar, Formlar ve Endüstriler
Öz
Amonyum heptamolibdat (Ammonium heptamolybdate) tetrahidratn nispeten düük He aknda (30 mL dak⁻¹) oda scakl ile 700 ° C arasnda gerçekletirilen termal ayrmas (2 K dak⁻¹) kütle spektrometrisi ve termogravimetri ile izlendi. Kütle spektrometrisi, amonyak ve su ayrma ürünlerinin ksmi basnçlarnn ve dolaysyla farkl ayrma aamalarnn tayc gaz akna bal olduunu ortaya koydu. Bununla birlikte, daha yüksek scaklklarda (T> 440 ° C), gaz halindeki amonyak hidrojene ayrr ve Mo4O11 benzeri bozunma ürünü oluumuna yol açar. NH4⁺ – ZSM-5 zeolit mevcudiyetinde moleküler oksijen geliir ve bu nedenle Mo4O11 oluumu engellenir. Bununla birlikte, MoO3 (s), su buhar varlnda gazl MoO2 (OH) 2’ye doru geliir. Gaz halindeki MoO2 (OH) 2’nin zeolit içine izotermal olmayan kat hal iyon deiimi 455 ve 520 ° C arasnda tercih edilir. Öte yandan, 500 ° C’de 12 saat izotermal deiim, ²⁷Al nükleer manyetik rezonansnn ortaya çkard gibi zeolit yapsn etkilemez.
Öz
TERMAL ayrma aratrmalar1,2, Amonyum heptamolibdat (Ammonium heptamolybdate) tetrahidratn diferansiyel termal analizde üç endotermik zirve, bir Guinier odaklama kamerasyla X-n analizinde dört farkl kristalin durum ve termo-gravimetrik analizde bunlara karlk gelen dört adm verdiini göstermitir. . Birinci endotermik zirve, dehidrasyona karlk gelir ve ikincisi ve üçüncüsü, amonyum kaybna karlk gelir. Genel olarak, poli asit hidratlar yalnzca yapsal su içerenler olarak snflandrlr3. Bununla birlikte, Amonyum heptamolibdat (Ammonium heptamolybdate) tetrahidrat durumunda, dehidrasyon ilk bata yapda bir deiiklik olmakszn gerçekleir ve sonunda dehidrasyonun sonunda yapsal çökme izler. Bu nedenle baz su moleküllerinin koordinasyon ilevi olduu görülmektedir. Aamal deammoniasyonun, yapdaki iki tür amonyum iyonundan kaynaklanyor olmas muhtemel görünüyor. Bu termal ayrma aratrmalarnn sonuçlarn kristal kimyas açsndan yorumlamak için, Amonyum heptamolibdat (Ammonium heptamolybdate) tetrahidratn tam bir yapsal analizi gereklidir.
Amonyum heptamolibdat (Ammonium heptamolybdate), normalde tetrahidrat olarak karlalan kimyasal formülü (NH4) 6Mo7O24 olan inorganik bileiktir. Bir dihidrat da bilinmektedir. Genellikle amonyum paramolibdat veya basitçe amonyum molibdat olarak adlandrlan renksiz bir katdr, ancak “amonyum molibdat” ayn zamanda amonyum ortomolibdat, (NH4) 2MoO4 ve birkaç baka bileii de ifade edebilir. En yaygn molibden bileiklerinden biridir. [1]
Ürün #
Açklama
A7302 Amonyum heptamolibdat, ACS reaktifi,% 81.0-83.0 MoO3 temeli,
09878 Amonyum heptamolibdat, BioUltra, ≥% 99.0 (T),
431346 Amonyum heptamolibdat, ACS reaktifi,% 99.98 eser metaller esas,
M1019 Amonyum heptamolibdat, BioReagent, hücre kültürü için uygun, böcek hücre kültürü için uygun,% 81.0-83.0 MoO3 bazl
çindekiler
1 Sentez
2Yap
3Kullanmlar
4 lgili bileikler
5Güvenlik
6 Kaynaklar
7 Ayrca bkz.
Sentez
Amonyum heptamolibdat (Ammonium heptamolybdate), molibden trioksitin fazla sulu amonyak içinde çözülmesi ve çözeltinin oda scaklnda buharlatrlmasyla kolayca hazrlanr. Çözelti buharlarken fazla amonyak kaçar. Bu yöntem, Amonyum heptamolibdat (Ammonium heptamolybdate) tetrahidratnn alt tarafl effaf prizmalarnn oluumuyla sonuçlanr. [2]
Amonyum paramolibdat çözeltileri, molibdik asit ve bir amonyum tuzu oluturmak için asitlerle reaksiyona girer. Konsantre bir çözeltinin pH deeri 5 ile 6 arasnda olacaktr.
Yaps
Bileik ilk olarak Lindqvist tarafndan kristalografik olarak analiz edilmi, ancak yeniden analiz edilmitir. [3] Tüm Mo merkezleri oktahedraldir. Baz oksit ligandlar terminaldir, bazlar çift köprü oluturur ve birkaç üçlü köprü ligandlardr.
Tuz, heptamolibdat heksaanyonu içerir.
Kullanmlar
sulu çözeltideki fosfat, silikat, arsenat ve kurunun miktarn ölçmek için analitik bir reaktif olarak (örnein pigmentler, nehir suyu, deniz suyu vb.) [4]
molibden metal ve seramik üretiminde
dehidrojenasyon ve kükürt giderme katalizörlerinin hazrlanmasnda
metallerin sabitlenmesinde
elektro kaplamada
mahsuller için gübrelerde.
biyolojik elektron mikroskobunda negatif bir boya olarak, tipik olarak% 3–5 (hacim / hacim) konsantrasyon aralnda ve trehaloz varlnda; [5] veya kriyo-negatif boyama yapmak için doymu konsantrasyonda. [6] [7]
Froehde reaktifinin bir bileeni olarak elence amaçl ilaçlarn tespiti için
Bantl bileikler
Tetrahidrat olarak da elde edilen potasyum heptamolibdat, amonyum tuzuna çok benzer. [3]
Emniyet
Molibdatlar tipik olarak düük toksisiteye sahiptir, öyle ki imdiye kadar çok az olay bildirilmitir. [1
Amonyum heptamolibdat (Ammonium heptamolybdate)
CAS #: 12027-67-7
Dorusal Formül: (NH4) 6Mo7O24
MDL Numaras: MFCD00064633 EC No .: 234-320-9
ÜRÜN Ürün Kodu SPAR GÜVENLK BLGLER TEKNK BLGLER
(2N)% 99 Amonyum heptamolibdat (Ammonium heptamolybdate)
AM-MOAT7-02-C
Fiyatlandrma> SDS> Veri Sayfas>
(3N)% 99.9 Amonyum heptamolibdat (Ammonium heptamolybdate)
AM-MOAT7-03-C
Fiyatlandrma> SDS> Veri Sayfas>
(4N)% 99.99 Amonyum heptamolibdat (Ammonium heptamolybdate)
AM-MOAT7-04-C
Fiyatlandrma> SDS> Veri Sayfas>
(5N)% 99,999 Amonyum heptamolibdat (Ammonium heptamolybdate)
AM-MOAT7-05-C
Fiyatlandrma> SDS> Veri Sayfas>
TOPTAN / SKU 0000-742-269447
Soru? Bir Amerikal Element Malzeme Bilimi Mühendisine Sorun
Amonyum heptamolibdat (Ammonium heptamolybdate) Özellikleri (Teorik)
Bileik Formül H24Mo7N6O24
Moleküler Arlk 1163.9
Görünüm Beyaz ila kirli beyaz toz veya kristaller
Erime Noktas 190 ° C
Kaynama Noktas Yok
Younluk 2.498 g / cm3
H2O’da çözünürlük N / A
Tam Kütle 1167.425807 g / mol
Monoizotopik Kütle 1177.42202 g / mol
Amonyum heptamolibdat (Ammonium heptamolybdate) Salk ve Güvenlik Bilgileri
Sinyal Kelimesi N / A
Tehlike Açklamalar N / A
Tehlike Kodlar N / A
RTECS Numaras QA5076000
Tüm tama türleri için OLMAYAN Nakliye Bilgileri
WGK Almanya 1
MSDS / SDS Talep MSDS / SDS
Amonyum heptamolibdat (Ammonium heptamolybdate) hakknda
Amonyum heptamolibdat (Ammonium heptamolybdate) (veya Heksaamonyum Molibdat) genellikle çou ciltte hemen bulunur. Yüksek saflk, mikron alt ve nano toz formlar düünülebilir. American Elements, uygulanabilir olduunda, Mil Spec (askeri snf) dahil olmak üzere birçok standart snfta üretim yapar; ACS, Reaktif ve Teknik Snf; Gda, Tarm ve laç Derecesi; Optik Snf, USP ve EP / BP (Avrupa Farmakopesi / ngiliz Farmakopesi) ve ilgili ASTM test standartlarn takip eder. Tipik ve özel paketleme mevcuttur. lgili ölçüm birimlerini dönütürmek için bir Referans Hesaplayc olduu gibi ek teknik, aratrma ve güvenlik (MSDS) bilgileri mevcuttur.
Amonyum heptamolibdat (Ammonium heptamolybdate) eanlamllar
Hekzaamonyum molibdat; Amonyum molibdat (VI); Amonyum molibden oksit; Molibdik asit, diamonyum tuzu; Amonyum molibdat (para); Amonyum paramolibdat; Molibdik asit amonyum tuzu; Dihidroksi (diokso) molibden – trioksomolibden amonyak; CAS 11098-84-3
Kimyasal Tanmlayclar
Dorusal Formül (NH4) 6Mo7O24
MDL Numaras MFCD00064633
EC No. 234-320-9
Pubchem Müteri Kimlii 44134832
IUPAC Ad azane; dihidroksi (diokso) molibden; trioksomolibden
SMILES NNNNNO [Mo] (= O) (= O) OO [Mo] (= O) (= O) OO [Mo] (= O) (= O) OO = [Mo] (= O) = OO = [ Mo] (= O) = OO = [Mo] (= O) = OO = [Mo] (= O) = O
InchI Tanmlayc
InchI Anahtar PTPRBYUXSYJORU-UHFFFAOYSA-H
Amonyum heptamolibdat (Ammonium heptamolybdate) Müterileri de nceledi
Amonyum Molibdat Çözeltisi
Amonyum Oktamolibdat
Amonyum Fosfomolibdat
Sodyum Amonyum Trimolibdat Nanotelleri
Amonyum 6-Molibdocobaltate
Amonyum Dimolibdat
Amonyum Fosfomolibdat Hidrat
Amonyum Molibdat Tetrahidrat
Amonyum Tetratiyomolibdat
Amonyum heptamolibdat (Ammonium heptamolybdate) için lgili Uygulamalar, Formlar ve Endüstriler
Öz
Amonyum heptamolibdat (Ammonium heptamolybdate) tetrahidratn nispeten düük He aknda (30 mL dak⁻¹) oda scakl ile 700 ° C arasnda gerçekletirilen termal ayrmas (2 K dak⁻¹) kütle spektrometrisi ve termogravimetri ile izlendi. Kütle spektrometrisi, amonyak ve su ayrma ürünlerinin ksmi basnçlarnn ve dolaysyla farkl ayrma aamalarnn tayc gaz akna bal olduunu ortaya koydu. Bununla birlikte, daha yüksek scaklklarda (T> 440 ° C), gaz halindeki amonyak hidrojene ayrr ve Mo4O11 benzeri bozunma ürünü oluumuna yol açar. NH4⁺ – ZSM-5 zeolit mevcudiyetinde moleküler oksijen geliir ve bu nedenle Mo4O11 oluumu engellenir. Bununla birlikte, MoO3 (s), su buhar varlnda gazl MoO2 (OH) 2’ye doru geliir. Gaz halindeki MoO2 (OH) 2’nin zeolit içine izotermal olmayan kat hal iyon deiimi 455 ve 520 ° C arasnda tercih edilir. Öte yandan, 500 ° C’de 12 saat izotermal deiim, ²⁷Al nükleer manyetik rezonansnn ortaya çkard gibi zeolit yapsn etkilemez.
Öz
TERMAL ayrma aratrmalar1,2, Amonyum heptamolibdat (Ammonium heptamolybdate) tetrahidratn diferansiyel termal analizde üç endotermik zirve, bir Guinier odaklama kamerasyla X-n analizinde dört farkl kristalin durum ve termo-gravimetrik analizde bunlara karlk gelen dört adm verdiini göstermitir. . Birinci endotermik zirve, dehidrasyona karlk gelir ve ikincisi ve üçüncüsü, amonyum kaybna karlk gelir. Genel olarak, poli asit hidratlar yalnzca yapsal su içerenler olarak snflandrlr3. Bununla birlikte, Amonyum heptamolibdat (Ammonium heptamolybdate) tetrahidrat durumunda, dehidrasyon ilk bata yapda bir deiiklik olmakszn gerçekleir ve sonunda dehidrasyonun sonunda yapsal çökme izler. Bu nedenle baz su moleküllerinin koordinasyon ilevi olduu görülmektedir. Aamal deammoniasyonun, yapdaki iki tür amonyum iyonundan kaynaklanyor olmas muhtemel görünüyor. Bu termal ayrma aratrmalarnn sonuçlarn kristal kimyas açsndan yorumlamak için, Amonyum heptamolibdat (Ammonium heptamolybdate) tetrahidratn tam bir yapsal analizi gereklidir.
Ürün #
Açklama
A7302 Amonyum heptamolibdat, ACS reaktifi,% 81.0-83.0 MoO3 temeli,
09878 Amonyum heptamolibdat, BioUltra, ≥% 99.0 (T),
431346 Amonyum heptamolibdat, ACS reaktifi,% 99.98 eser metaller esas,
M1019 Amonyum heptamolibdat, BioReagent, hücre kültürü için uygun, böcek hücre kültürü için uygun,% 81.0-83.0 MoO3 bazl