1. For making iron salts, iron oxide pigments, mordants, water purifiers, preservatives, disinfectants, etc;
2. Medically, as an anti anemia drug, local Astringent and blood tonic, and can be used for chronic blood loss caused by Uterine fibroid; Analysis reagents and raw materials for ferrite production;
3. Iron fortifier as a feed additive;
4. In agriculture, as a pesticide to prevent and control wheat smut, apple and pear scab, and fruit tree decay; Edible grade is used as a nutritional supplement, such as iron fortifier and fruit and vegetable coloring agent.
5. As fertilizer to remove moss and lichen from tree trunks. It is the raw material for manufacturing magnetic iron oxide, iron oxide red and iron blue inorganic pigments, iron catalysts and poly Iron(III) sulfate.
6. In addition, as a chromatographic analysis reagent, etc.