Ammonium Molybdate Tetrahydrate

Ammonium molybdate tetrahydrate, also known as ammonium molybdate (NH₄)₆Mo₇O₂₄·4H₂O, is a chemical compound that consists of ammonium cations (NH₄⁺), molybdate anions (MoO₄²⁻), and water molecules. It is a crystalline solid with a pale yellow color.

Ammonium molybdate tetrahydrate is commonly used in various applications, including:

1. Analytical Chemistry: It is used as a reagent for detecting and determining the presence of phosphates, silicates, arsenates, and other substances in chemical analysis.
2. Catalyst: It can be used as a catalyst in various reactions, including the synthesis of heterocyclic compounds and the conversion of alcohols.
3. Corrosion Inhibitor: Ammonium molybdate can act as a corrosion inhibitor for metals, particularly in industrial processes involving acidic or alkaline environments.
4. Fertilizers: It is used as a source of molybdenum in fertilizers. Molybdenum is an essential micronutrient for plants, and its addition to soil helps promote healthy growth.
5. Pigments: Ammonium molybdate tetrahydrate can be used to produce yellow pigments, such as “Molybdate Orange,” which find applications in paints, ceramics, and other industries.
6. Molecular Biology: It is utilized in certain molecular biology techniques for staining nucleic acids, such as DNA and RNA, during gel electrophoresis or other DNA/RNA visualization methods.

When handling ammonium molybdate tetrahydrate, it is important to follow appropriate safety precautions. It should be stored in a dry place, away from heat and incompatible substances. Direct contact with the compound or its dust should be avoided, and protective gloves and goggles should be worn.