Ammonium heptamolybdate tetrahydrate

Ammonium heptamolybdate tetrahydrate, likewise referred to as ammonium molybdate, is a white, crystalline inorganic substance with the chemical formula (NH₄)₆Mo₇O₂₄⋅4H₂O. It's one of the most typical type of ammonium heptamolybdate as well as has a number of intriguing homes plus applications.

Properties:

• Appearance: White, crystalline solid

• CAS #: 12054-85-2

• Formula: (NH₄)₆Mo₇O₂₄⋅4H₂O

• Molar mass: 1,163.9 g/mol

• Solubility in water: 65.3 g / 100 ml (at 20°C)

• Density: 2.5 g/cm³

• Melting point: ~90°C (loses water molecules); 190°C (decomposes)

• pH: 5.3 (aqueous solution, 50 g/L)

Applications:

• Analytical chemistry: It's a key component in colorimetric tests for phosphate, used in various fields like agriculture, environmental monitoring, and wastewater treatment.

• Pigments and ceramics: It's used to produce molybdenum-based pigments with vibrant colors like yellow, orange, and red. These pigments are used in paints, glazes, and enamels.

• Fire retardants: Ammonium heptamolybdate can be used in fire retardant formulations for textiles, plastics, and wood.

• Agriculture: It can be used as a source of molybdenum, an essential micronutrient for plants.

Safety:

• Ammonium heptamolybdate is generally considered a low-toxicity compound, but it can cause irritation to the skin, eyes, and respiratory system upon contact or inhalation.

• It's important to handle it with proper precautions, including wearing gloves, eye protection, and a respirator when necessary.

Additional information:

• You can find more detailed information about the properties, applications, and safety of ammonium heptamolybdate tetrahydrate in safety data sheets from chemical suppliers like Sigma-Aldrich or Hengchang Molybdenum Industry.

• If you have any specific questions about its use or handling, it's best to consult a qualified professional or refer to relevant safety guidelines.