• USA Home
  • 79560 - Phosphomolybdic acid hydrate

79560 Sigma-Aldrich

Phosphomolybdic acid hydrate

for microscopy

Synonym: Molybdophosphoric acid



Related Categories Analytical Reagents, Analytical/Chromatography, Chemical Synthesis, Microscopy Reagents, Others,
grade   for microscopy
loss   21-23% loss on drying, 110 °C
density   1.62 g/mL at 25 °C(lit.)
anion traces   chloride (Cl-): ≤50 mg/kg
  sulfate (SO42-): ≤100 mg/kg
cation traces   Ca: ≤50 mg/kg
  Cd: ≤5 mg/kg
  Co: ≤20 mg/kg
  Cr: ≤5 mg/kg
  Cu: ≤5 mg/kg
  Fe: ≤50 mg/kg
  K: ≤50 mg/kg
  Mg: ≤20 mg/kg
  Mn: ≤100 mg/kg
  NH4+: ≤30 mg/kg
  Na: ≤50 mg/kg
  Ni: ≤10 mg/kg
  Pb: ≤20 mg/kg
  Zn: ≤50 mg/kg



A precursor to hybrid organic-inorganic based molecular batteries with applications as cation-insertion electrodes.3

PAH was used in preparing Mo-Al2O3 catalysts in an attempt to produce ultra-low sulphur diesel.1

Other Notes

Review: of the folin phenol method for the quantitative determination of proteins4

Same product — same quality — now Sigma-Aldrich brand

General description

Phosphomolybdic acid hydrate (PAH) is yellow and crystallisable compound. It precipitates from potash, oxides of rubidium, caesium and thallium, ammonia and other nitrogenous organic alkaloids.2

Price and Availability

Suggested Laboratory Gloves

Laboratory GlovesThis substance has been tested against several types of hand protection for CE compliance. Click below to find the recommended gloves for handling this product.

Explore the New Analytical Standards Portal
Safety & Documentation

Safety Information

Signal word 
Hazard statements 
Precautionary statements 
UN 3084 5.1(8) / PGII
WGK Germany 
Protocols & Articles
Peer-Reviewed Papers


Set your institution to view full text papers.

1. Ultra-deep oxidative desulfurization of diesel fuel by the Mo/Al 2 O 3-H 2 O 2 system: The effect of system parameters on catalytic activity. Garcia-Gutierrez, Jose Luis, et al. Appl. Catal. A Gen. 334, 366-373, (2008)

3. Lira-Cantú, M.; Gómez-Romero, P. Chem. Mater. 10, 698, (1988)

4. Review of the Folin phenol protein quantitation method of Lowry, Rosebrough, Farr and Randall. G.L. Peterson Anal. Biochem. 100, 201, (1979)


Apoptotic, inflammatory, and fibrogenic effects of two different types of multi-walled carbon nanotubes in mouse lung. van Berlo D, Wilhelmi V, Boots AW, et al. Arch. Toxicol. 88(9), 1725-37, (2014)


Porous molybdenum carbide nano-octahedrons synthesized via confined carburization in metal-organic frameworks for efficient hydrogen production. Wu HB, Xia BY, Yu L, et al. Nat. Commun. 6, 6512, (2015)


Establishment of an oral infection model resembling the periodontal pocket in a perfusion bioreactor system. Bao K, Papadimitropoulos A, Akgül B, et al. Virulence 6(3), 265-73, (2015)


Periodontal Defects in the A116T Knock-in Murine Model of Odontohypophosphatasia. Foster BL, Sheen CR, Hatch NE, et al. J. Dent. Res. 94(5), 706-14, (2015)


Nocardioides soli sp. nov., a bacterium isolated from a mountain soil. Srinivasan S, Lee SS, Lee JJ, et al. Antonie van Leeuwenhoek 106(2), 271-8, (2014)


Improvement of the skeletal and dental hypophosphatasia phenotype in Alpl-/- mice by administration of soluble (non-targeted) chimeric alkaline phosphatase. Gasque KC, Foster BL, Kuss P, et al. Bone 72, 137-47, (2015)


Okibacterium endophyticum sp. nov., a novel endophytic actinobacterium isolated from roots of Salsola affinis C. A. Mey. Wang HF, Zhang YG, Li L, et al. Antonie van Leeuwenhoek 107(3), 835-43, (2015)


Spirosoma radiotolerans sp. nov., a gamma-radiation-resistant bacterium isolated from gamma ray-irradiated soil. Lee JJ, Srinivasan S, Lim S, et al. Curr. Microbiol. 69(3), 286-91, (2014)


2. Chemical News A new precipitant for Potash, (1868), 183

Corp MSDS 1 (2), 2820:B / RegBook 1 (3), 3255:B

Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?