Ammonium Citrate Formula: Structure, Properties, and Uses

Ammonium citrate formula explained, including its structure, properties, and industrial uses, including applications of ammonium ferric citrate.
Ammonium ferric citrate green grade powder in 25 kg bag

What Is the Ammonium Citrate Formula?

The ammonium citrate formula refers to a group of compounds formed from citric acid and ammonia. The most common forms include:
  • Tris(ammonium) citrate: (NH₄)₃C₆H₅O₇
  • Diammonium citrate: (NH₄)₂C₆H₆O₇
These compounds are widely used in industrial, laboratory, and food-related applications depending on their formulation and purity.
Ammonium ferric citrate being dissolved for cyanotype solution

Chemical Structure and Composition

Ammonium citrate is derived from citric acid (C₆H₈O₇), where hydrogen ions are replaced by ammonium ions (NH₄⁺).
Key characteristics:
    • Water-soluble compound
    • Acts as a buffering agent
    • Forms stable complexes with metals
    • Compatible with aqueous systems

Related Compound: Ammonium Ferric Citrate

A commonly used derivative is ammonium ferric citrate, which contains iron, citrate, and ammonium ions.
This compound is widely used in:
  • Water treatment processes
  • Cyanotype printing
  • Chemical and laboratory applications

Industrial Applications

Ammonium citrate compounds are used in several industries:
Food and Beverage Industry
Used as acidity regulators and stabilizers (regulated use).
Pharmaceutical Applications
Used in formulations requiring buffering and metal ion control.
Water Treatment
Helps stabilize and control metal ions in treatment systems.
Chemical Manufacturing
Acts as a chelating and buffering agent in industrial processes.

Why the Formula Matters in Industry

Understanding the ammonium citrate formula is important because:
  • It determines solubility and reactivity.
  • It affects compatibility with other chemicals.
  • It influences application in industrial systems.
Manufacturers rely on the correct formulation for consistent process performance.

Industrial Supply of Ammonium Citrate Compounds

Ammonium citrate compounds are typically supplied through bulk chemical distributors for industrial use.