Used as a catalyst or starting material in organic synthesis, particularly in oxidation and reduction reactions. It serves in electroplating processes to produce smooth and adherent iron coatings, acting as a key source of Fe²⁺ ions in the electrolyte for uniform, durable finishes resistant to rust and abrasion. Employed in the preparation of specialty iron-containing materials for research and industrial applications. Also utilized in some agricultural formulations as a micronutrient source in controlled-release systems. Additionally, it may be used in wastewater treatment to reduce various oxidizers.