Phosphomolybdic Acid NEW

Phosphomolybdic Acid Cas 51429-74-4

Product Description

Product Name: Phosphomolybdic Acid

Synonyms:  12-Molybdophosphoric acid hydrate

CAS No. 51429-74-4

M.F.: H5Mo12O41P

M.W.: 1843.27

EINECS: 610-660-7

Phosphomolybdic Acid (PMA), also known as molybdophosphoric acid, is a heteropoly acid with the formula H₃[P(Mo₃O₁₀)₄]. It is the most well-known member of a family of compounds called heteropoly acids, which feature a central atom (here, phosphorus) surrounded by multiple molybdenum oxide octahedra. It is renowned for its vibrant yellow color and its powerful, reversible redox (reduction-oxidation) properties, which make it incredibly useful in analytical chemistry and catalysis.

Key Characteristics

• Chemical Formula: H₃PMo₁₂O₄₀

  CAS Number: 51429-74-4

  Appearance: Bright yellow crystalline solid

  Solubility: Highly soluble in water and polar organic solvents like ethanol.

  Key Property: Acts as a strong oxidizing agent and an electron acceptor.

The "Molybdenum Blue" Reaction Mechanism

This is the most famous characteristic of PMA. It serves as the basis for its primary analytical applications.

1. Oxidation: Phosphomolybdic acid (yellow) is a strong oxidizing agent.

2. Reduction: When it encounters reducing agents (e.g., phenols, ascorbic acid, sugars, alkaloids), it itself gets reduced.

3. Color Change: This reduction process changes its chemical structure, forming a deep blue-colored complex known as "molybdenum blue."

4. Reversibility: This reaction is often reversible, meaning the blue form can be re-oxidized back to the yellow form.

The intensity of the blue color is directly proportional to the concentration of the reducing substance, which allows for quantitative analysis.

Primary Applications and Uses

1. Analytical Chemistry:

• Staining Reagent (TLC): This is one of its most common laboratory uses. A solution of PMA is sprayed onto a Thin-Layer Chromatography (TLC) plate and then heated. It reacts with a vast range of organic compounds (especially reducing species like lipids, steroids, and phenols), producing blue spots on a yellow or green background, making the separated compounds visible.

  Spectrophotometric Assay: It is used in quantitative tests to measure the concentration of reducing substances. A prime example is the Folin-Ciocalteu assay, which uses a mixture including PMA to measure phenolic and polyphenolic content (antioxidant levels) in food and biological samples.

  Detection of Alkaloids and Phosphates.

2. Catalysis:

• PMA is a strong Brønsted acid (proton donor) and a versatile redox catalyst. It is used to catalyze various organic reactions in both homogeneous and heterogeneous systems, including oxidations, esterifications, and dehydrations. Its solubility allows for easy recovery and reuse.

3. Electrochemistry:

• Due to its ability to undergo reversible multi-electron redox reactions, it is studied for applications in electrocatalysis and modifying electrodes to create sensors.

4. Pigments and Corrosion Inhibition:

• The reduced "molybdenum blue" form is used in certain pigments and dyes.

  It can be used as a corrosion inhibitor for metals.

Safety and Handling

• Corrosivity: As a strong acid, it is corrosive to skin, eyes, and respiratory tract.

  Toxicity: Contains molybdenum, which can be toxic in high doses.

  Handling: Must be handled with appropriate personal protective equipment (PPE) including gloves and safety glasses, preferably in a fume hood.

Summary

In essence, Phosphomolybdic Acid is a versatile yellow compound prized for its vivid color-change reaction. Its primary role is as a sensitive staining and detection reagent in analytical chemistry (especially TLC), enabling scientists to visualize and quantify otherwise invisible compounds. Its additional roles as a strong acid catalyst and an electrochemical agent make it a valuable tool in both research and industrial chemistry.

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5.What's your MOQ?

Different products have different MOQ, such as:

1).Peptide products, the MOQ is 1 gram level

2).Liquid products, the MOQ is usually 50-100ML

3).API,  the MOQ is 1KG

4).Intermediate products and conventional product, the MOQ is 1KG; custom-tailored products, the MOQ depends on the production process.

5).Food additives and vitamin, the MOQ is usually one package: such as Vitamin C is 25KG / drum, Vitamin E oil or Vitamin A oil  is 5KG/bag;Vitamin E powder or Vitamin A powder is 20KG / cartons.

6).Agrochemical , the MOQ is 1KG, except preparations.

6.How do we take the quality complaint ?

First of all, our quality control will reduce the quality issue to near zero. If there is a quality problem caused by us, we will send you free goods for replacement or compensate your loss.

Company Information

Company profile

Wuhan Fortuna Chemical Co.,Ltd established in 2006, is a big integrative chemical enterprise being engaged in Pharmaceutical & its intermediates, Food/Feed additives, Fine chemicals in distributing the products of our own company and affiliated enterprises, are the members of Hubei E-commerce Chamber.

Our company has professional persons who major in chemical R&D and sicentific management, supply fine chemical products with high quality and close service, also supply custom-tailored products according to our clients’ requirement.

We have a positive and self-motivated management work team with a common philosophy, caring and commitment through teamwork, our team strive to achieve success in delighting our clients and ourselves. 

Since Wuhan Fortuna Chemical Co., Ltd founded, we continuously innovate our products and improve our service, sales network. Hence, we initiate the first sale mode on net in China, which is the retail trade of small package bring along wholesale of diversified management modes. Our products are exported widely to South Korea, Vietnam, Australia, Europe and South America, highly recommended by our clients.

We insist on the management creed “Market is our compass, Quality is our life, Credit is our soul”. Clients’ trust is our forward powder, their satisfaction is our struggling goal.

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