Molybdic acid

Molybdic acid
Names
	Other names Molybdic(VI) acid
Identifiers
CAS Number	7782-91-4 ; monohydrate: 13462-95-8; dihydrate: 25942-34-1;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:25371;
ChemSpider	74188;
ECHA InfoCard	100.029.063
EC Number	231-970-5;
KEGG	C06232;
PubChem CID	82208;
UNII	I96N991J1N ;
CompTox Dashboard (EPA)	DTXSID20894105 ;
	InChI InChI=1S/Mo.2H2O.2O/h;21H2;;/q+2;;;;/p-2 Key: VLAPMBHFAWRUQP-UHFFFAOYSA-L; InChI=1/Mo.2H2O.2O/h;21H2;;/q+2;;;;/p-2/rH2MoO4/c2-1(3,4)5/h2-3H Key: VLAPMBHFAWRUQP-LHLUJLTBAG;
	SMILES O=[Mo](=O)(O)O;
Properties
Chemical formula	MoO3·H2O
Molar mass	161.95 g mol−1
Appearance	white crystals (anhydrous) ; yellow crystals (monohydrate)
Density	3.112 g/cm3 (anhydrous) ; 3.124 g/cm3 (monohydrate)
Melting point	300 °C (572 °F; 573 K)
Solubility in water	1510 mg dm−3 Soluble in 10% ammonia 35gm/lt
Structure
Crystal structure	hexagonal (anhydrous) ; monoclinic (monohydrate)
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H319, H335, H373
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Molybdic acid refers to hydrated forms of molybdenum trioxide and related species. The monohydrate (MoO₃·H₂O) and the dihydrate (MoO₃·2H₂O) are well characterized. They are yellow diamagnetic solids.