Description

Phosphomolybdic Acid CAS NO 11104-88-4 is a heteropoly acid of molybdenum and phosphorus, widely recognized as a versatile catalyst and analytical reagent. Its strong oxidizing and acidic properties make it indispensable for facilitating complex organic transformations and serving as a key component in staining and detection protocols. This high-purity chemical is essential for manufacturers and research laboratories in the pharmaceutical, chemical synthesis, and materials science sectors.

Application

• Catalysis: A powerful and reusable acid catalyst for esterification, alkylation, and oxidation reactions in fine chemical and pharmaceutical synthesis.
• Analytical Chemistry: Used as a sensitive reagent for the spectrophotometric determination and detection of phosphate, silicate, and various reducing substances.
• Electrochemistry & Materials Science: Employed in the fabrication of electrochromic and photochromic devices, as well as in the synthesis of functional hybrid materials and conductive thin films.
• Biological Staining: A key component in histological stains, such as the Mallory's phosphomolybdic acid stain, for differentiating connective tissues and cellular structures.
• Corrosion Inhibition: Acts as an effective corrosion inhibitor in coatings and pretreatment formulations for metal surfaces.
• Research & Development: Serves as a precursor for preparing other molybdenum compounds and catalysts in academic and industrial R&D settings.

Basic Information

Product Name	Phosphomolybdic Acid
CAS No.	11104-88-4
Molecular Formula	H3PMo12O40 (anhydrous basis)
Molecular Weight	1825.25 g/mol (anhydrous)
Synonyms	Dodecamolybdophosphoric Acid; Molybdophosphoric Acid; Phosphomolybdate; 12-Molybdophosphoric Acid; PMA; H3[PMo12O40]; Keggin-type Phosphomolybdate; Phosphomolybdic(VI) Acid
EINECS	234-336-3

Quality Control

Our Phosphomolybdic Acid is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets high-purity standards suitable for catalytic and analytical applications. A Certificate of Analysis (COA) detailing assay, purity, and impurity profiles is provided with each shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and should be kept in a desiccated environment to prevent absorption of water. Keep away from incompatible materials such as strong bases and reducing agents.

Specification

Item	Specification
Appearance	Yellow to greenish-yellow crystalline powder
Identification (IR)	Conforms
Assay (as H3PMo12O40)	≥ 98.0 %
Solubility (in Water)	Clear, yellow solution
Loss on Drying	≤ 2.0 %
Chloride (Cl)	≤ 0.01 %
Sulfate (SO4)	≤ 0.02 %
Heavy Metals (as Pb)	≤ 0.002 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.