Ammonium phosphomolybdate

Nowadays, Ammonium phosphomolybdate is a topic that has captured the attention of many people around the world. With the advancement of technology and the democratization of information, Ammonium phosphomolybdate has become a point of interest for people of all ages and backgrounds. From its impact on society to its influence on popular culture, Ammonium phosphomolybdate has left a significant mark on the way we live and perceive the world around us. In this article, we will further explore the impact and importance of Ammonium phosphomolybdate today, as well as its relevance for the future.

Ammonium phosphomolybdate^[1]

Names
Other names Ammonium molybdophosphate Triammonium 12-molybdophosphate
Identifiers
CAS Number	12026-66-3 N 54723-94-3 (hydrate)
3D model (JSmol)	Interactive image
ChemSpider	21241450 Y
ECHA InfoCard	100.031.545
EC Number	234-714-0
PubChem CID	90479084
UNII	F7YCY6MSAO
InChI InChI=1S/12Mo.3H3N.H3O4P.36O/c;;;;;;;;;;;;;;;1-5(2,3)4;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/h;;;;;;;;;;;;3*1H3;(H3,1,2,3,4);;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; Y Key: RIAJLMJRHLGNMZ-UHFFFAOYSA-N Y
SMILES ...P(=O)().O=(=O)=O.O=(=O)=O.O=(=O)=O.O=(=O)=O.O=(=O)=O.O=(=O)=O.O=(=O)=O.O=(=O)=O.O=(=O)=O.O=(=O)=O.O=(=O)=O.O=(=O)=O
Properties
Chemical formula	(NH4)3PMo12O40
Molar mass	1876.35 g/mol
Appearance	Yellow crystals
Melting point	Decomposes
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335[2]
Precautionary statements	P261, P305+P351+P338[2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). N verify (what is YN ?) Infobox references

Chemical compound

Ammonium phosphomolybdate is the inorganic salt of phosphomolybdic acid with the chemical formula (NH₄)₃PMo₁₂O₄₀. The salt contains the phosphomolybdate anion, a well known heteropolymetalate of the Keggin structural class.

Synthesis

Ammonium phosphomolybdate can be made by heating ammonium orthomolybdate combined with phosphoric acid and nitric acid, yielding ammonium nitrate, water, and a yellow precipitate of ammonium phosphomolybdate is obtained.^[3]

12 (NH₄)₆Mo₇O₂₄(H₂O)₄ + 7 Na₂HPO₄(H₂O) + 65 HNO₃ → 7 (NH₄)₃Mo₁₂PO₄₀ + 51 NH₄NO₃ + 14 NaNO₃ + 91 H₂O

Normally, it often exists as a hexahydrate, a dark yellow fine crystal which is poorly soluble in water.^[3]

It is also obtained as a test result for phosphate ions.

References

1. ^ ChemicalBook: http://www.chemicalbook.com/ChemicalProductProperty_EN_CB6162083.htm
2. ^ ^{a b} "Ammonium phosphomolybdate hydrate".
3. ^ ^{a b} Dias, José Alves; Dias, Sílvia Cláudia Loureiro; Caliman, Ednéia (2014). "Keggin Structure Polyoxometalates". Inorganic Syntheses: Volume 36. Vol. 36. pp. 210–217. doi:10.1002/9781118744994.ch39. ISBN 9781118744994.