Ammonium Heptamolybdate

Ammonium heptamolybdate (AHM) is a chemical compound with the formula (NH4)6Mo7O24. It typically exists in tetrahydrate form, making its full chemical notation (NH4)6Mo7O24·4H2O. This white, crystalline compound is one of the key molybdate salts used in various industrial and chemical processes.

Uses of Ammonium Heptamolybdate

1. Catalyst Production: AHM is extensively used in the production of catalysts. These catalysts are vital for the petrochemical industry, aiding in processes such as hydrocracking and the removal of sulfur from crude oil. The effectiveness of AHM in catalyst preparation stems from its ability to disperse molybdenum evenly throughout the catalyst material.

2. Analytical Chemistry: In analytical laboratories, ammonium heptamolybdate is employed as a reagent for quantitative analysis of phosphates, silicates, arsenates, and lead. The compound reacts with these ions to form precipitates, which can be measured to determine the concentration of these substances in samples.

3. Corrosion Inhibitors: Similar to ammonium dimolybdate, AHM is used in the formulation of corrosion inhibitors. These inhibitors are crucial for protecting metal surfaces in water circulation systems, boilers, and engines, reducing the rate of corrosion and enhancing the longevity of the equipment.

4. Pigments and Dyes: AHM is also used in the production of pigments and dyes. Molybdenum-based pigments derived from ammonium heptamolybdate are used in ceramics, plastics, and paints for their vibrant colors and chemical stability.

5. Agriculture: As a micronutrient in fertilizers, AHM provides molybdenum essential for plant growth. It promotes enzymatic processes in plants, including nitrogen fixation, which is crucial for the health and productivity of legume crops.

6. Metal Finishing: In the metal processing industry, ammonium heptamolybdate is utilized in electroplating and as a metal finishing reagent to enhance the surface properties of metals, providing better resistance to wear and corrosion.

7. Research and Development: In scientific research, AHM serves as a source of molybdenum for experiments, particularly in the study of molybdenum enzymes and other chemical research areas where stable and soluble molybdenum sources are required.

These diverse applications of ammonium heptamolybdate underscore its utility in industrial, environmental, and technological fields, leveraging its chemical properties for improvements in materials processing, environmental protection, and analytical accuracy.

Global Services

London Chemicals & Resources Ltd (LCR) is an international distributor, stockist and supplier of industrial inorganic chemicals. We hold several agencies and serve a global customer base both directly and via a network of local agents. LCR is committed to providing efficient service and competitive pricing to all customers.

Raw materials are supplied for a wide range of applications including the battery, catalyst, ceramic, fertiliser, glass, plating, refinery, superalloy and other industries. Our materials are usually packed in drums or bags in accordance with UN, CLP and other applicable local and international regulations.

Who Are We?

London Chemicals & Resources Ltd (LCR) operates globally, processing non-ferrous metal-containing secondaries and distributing a range of metal salts and alloys which, in many cases, are recycled from these secondaries.

We hold exclusive agencies from Full Yield Industry Co Limited based in Taiwan and AGR-CR based in Spain. LCR source more than 90% of the spent catalysts and other feedstocks processed at Full Yield and represent them exclusively for sales of vanadium, molybdenum and nickel chemicals.

We also represent a completely new processing plant; AGR-CR treating spent catalysts and other secondaries and scheduled to start commercial operations in Q1, 2020. LCR offers commercially competitive recycling options with an emphasis on environmentally sound management. Our experienced, friendly and knowledgeable staff are familiar with relevant legislation, transport procedures and documentation including trans-frontier notifications; REACH, SDSs and ADR. Quality, consistency and reliability are all important watchwords for LCR ensuring that our customers return again and again.

We are regularly purchasing and recycling secondaries containing cobalt, copper, molybdenum, nickel, tungsten, vanadium and zinc found typically in boiler ashes and slags, catalysts spent – unused or out of date, drosses, dusts, filter cakes, furnace dust, galvanic solution residues, grindings and grinding sludges, metallics, shavings, metal powders, picking solutions, plating sludges, production wastes, residues, skimmings, sludges, wastewater treatment residues.

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