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Phosphomolybdic acid solution (CAS 12026-57-2)

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Synonym:Masson Trichrome
Application:Water soluble compound used in chromatography, histology staning and spectrophotometry
CAS Number:12026-57-2
Molecular Weight:1825.25
Molecular Formula:H3[P(Mo3O10)4]
Refer to Certificate of Analysis for lot specific data (including water content).
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 Ordering Information
Product NameCatalog #UnitPriceQtyAddFavorites
Phosphomolybdic acid solution sc-203346 100 ml $49
Phosphomolybdic acid solution sc-203346A 500 ml $155
This is classified as a Dangerous Good for transport and may be subject to additional shipping charges.
Description
Phosphomolybdic acid solution is primarily used in spectrophotometric determination of phosphate ions. PMA is also component in the 3-color histology stain called Masson’s trichrome; employed in the differentiation step, Phosphomolybdic acid is one of the solutions fixed tissues are immersed in prior to subsequent staining. Phosphomolybdic acid is also used as reagent for simple and rapid colorimetric determination of phenothiazine derivatives. PMA oxidizes the phenothiazine derivative to a cationic free radical, forming a coloured salt. A preliminary extraction is necessary if certain reductants (sulphite or ascorbic acid) are present as stabilizers, as they will reduce the reagent to phosphomolybdenum blue.
Also available as dry reagent: Phosphomolybdic acid hydrate (sc-215711)
Technical Information
Formulation:20 % wt. in ethanol
Physical State:Liquid
Storage:Store at 4° C
Density:0.94 g/mL
Safety and Reference Information
Transport:UN 2924, Class 3(8), Packing group II
WGK Germany:3
PubChem CID:11251951
MDL Number:MFCD00011341
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
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
References
1. Fujinaga, T., et al. 1971. Talanta. 18: 960-962. PMID: 18960967
2. Stan, M., et al. 1977. Talanta. 24: 140-142. PMID: 18962047
3. Li, Y., et al. 2009. Org. Lett. 11: 2691-2694. PMID: 19514796
SDS (MSDS)
Certificate of Analysis

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