Phosphomolybdic acid

Phosphomolybdic acid
Names
	Other names Molybdophosphoric acid; dodecamolybdophosphoric acid
Identifiers
CAS Number	12026-57-2 (anhydrous) ; 51429-74-4 (hydrate) ;
3D model (JSmol)	Interactive image; Interactive image;
ChemSpider	9426978;
ECHA InfoCard	100.031.544
EC Number	234-713-5;
MeSH	Phosphomolybdic+acid
PubChem CID	11251951;
UNII	RN225F04V1;
	InChI InChI=1S/12Mo.H3O4P.36O/c;;;;;;;;;;;;1-5(2,3)4;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/h;;;;;;;;;;;;(H3,1,2,3,4);;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; Key: DHRLEVQXOMLTIM-UHFFFAOYSA-N;
	SMILES OP(=O)(O)O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O; [Mo]18%21%24(O[Mo]%16%18%23(O[Mo]56(O1)(O[Mo]247(O[Mo]9%22(O[Mo]%12%13(O2)(O[Mo]3%11%14(O[Mo]%17%19(O[Mo](O3)(O4)(O5)([O++]67[P+]%15%20[O++]89[Mo]%10(O[Mo](O[Mo](O%10)(O%11)(O%12)([O++]%13%14%15)[O-])(O%16)(O%17)([O++]%18%19%20)[O-])(O%21)(O%22)[O-])[O-])(O%23)[O-])[O-])O)(O%24)[O-])[O-])O)[O-])O;
Properties
Chemical formula	H3[PMo12O40]
Molar mass	1825.25 g/mol
Density	1.62 g/ml (hydrate)
Melting point	79-90 °C
Solubility in water	soluble
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Oxidiser (hydrate)
	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

Phosphomolybdic acid is the heteropolymetalate with the formula H₃[Mo₁₂PO₄₀]·12H₂O. It is a yellow solid, although even slightly impure samples have a greenish coloration. It is also known as dodeca molybdophosphoric acid or PMA, is a yellow-green chemical compound that is freely soluble in water and polar organic solvents such as ethanol. It is used as a stain in histology and in organic synthesis.