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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

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

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Safety & Documentation

Safety Information

Signal word 
Hazard statements 
Precautionary statements 
UN 3084 5.1(8) / PGII
WGK Germany 

Protocols & Articles

Peer-Reviewed Papers


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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)


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

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

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