Ammonium heptamolybdate tetrahydrate
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Ammonium heptamolybdate tetrahydrate

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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.


Shaanxi Hengchang Molybdenum Industry Co., Ltd. is a leading company in the production and export of molybdenum compounds and products.
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