Ammonium heptamolybdate

Ammonium heptamolybdate
Names
	IUPAC name Ammonium docosaoxoheptamolybdate(6–)
	Other names Ammonium molybdate; Ammonium paramolybdate; (see text)
Identifiers
CAS Number	12027-67-7 ; 12054-85-2 (tetrahydrate) ;
3D model (JSmol)	Interactive image; Interactive image;
ChemSpider	23786 ;
ECHA InfoCard	100.031.553
EC Number	234-320-9;
PubChem CID	71306766;
UNII	21Y68J178E ; OGI154X474 (tetrahydrate) ;
CompTox Dashboard (EPA)	DTXSID40858865 DTXSID5036896, DTXSID40858865 ;
	InChI InChI=1S/7Mo.6H3N.24H2O/h;;;;;;;61H3;241H2 Key: QGAVSDVURUSLQK-UHFFFAOYSA-N ; InChI=1/7Mo.6H3N.24H2O/h;;;;;;;61H3;241H2 Key: QGAVSDVURUSLQK-UHFFFAOYAC;
	SMILES [NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[O-][Mo](=O)(=O)[O-].[O-][Mo](=O)(=O)[O-].[O-][Mo](=O)(=O)[O-]; [NH4+].[NH4+].[NH4+].[Mo]3479%12[O+]1[Mo]25([O-])([O-])O[Mo]1%10([O-])([O-])O[Mo]%11([O-])([O-])(O[Mo]8([O-])([O-])(O[Mo]6([O-])([O-])(O[Mo]([O-])([O-])(O2)(O3)[O++]456)[O+]78)[O++]9%10%11)O%12.[NH4+].[NH4+].[NH4+];
Properties
Chemical formula	(NH4)6Mo7O24
Molar mass	1163.9 g/mol; 1235.86 g/mol (tetrahydrate)
Appearance	white solid
Density	2.498 g/cm3
Melting point	~90 ˚C (loses water molecule) ; 190 °C (decomp.)
Solubility in water	65.3 g / 100 ml (tetrahydrate)
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Irritant
NFPA 704 (fire diamond)	2 0 0
Flash point	Non-flammable
Safety data sheet (SDS)	External MSDS
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). verify (what is ?) Infobox references

Ammonium heptamolybdate 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.

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