Product Introduction:

Ferrous sulfate (FeSO₄) commonly occurs as the heptahydrate (FeSO₄·7H₂O), appearing as blue-green monoclinic crystals or granules and is odorless. It effloresces in dry air and, in moist air, its surface oxidizes to form brown basic ferric sulfate. It is readily soluble in water, yielding an acidic aqueous solution. Upon heating, it loses three molecules of water at 70–73 °C, six molecules of water at 80–123 °C, and above 156 °C, it converts into basic ferric sulfate.

Product Advantages:

Cost-effective: Ferrous sulfate has a relatively low production cost, making it an economical choice in numerous applications requiring iron salts. It effectively reduces operational expenses while maintaining treatment efficacy.

Excellent flocculation performance: As a flocculant, ferrous sulfate hydrolyzes in water to form ferric hydroxide colloids, which effectively adsorb suspended impurities, aggregate into larger flocs, and accelerate sedimentation. This efficiently removes suspended solids, color, and certain heavy metal ions from water, significantly improving water quality.

Strong reducing capacity: Ferrous sulfate exhibits strong reducing properties and can be used to treat oxidizing pollutants, such as hexavalent chromium (Cr⁶⁺) and other heavy metal ions. It reduces them to less toxic forms—e.g., converting Cr⁶⁺ to trivalent chromium (Cr³⁺)—which are easier to remove in subsequent treatment steps, thereby reducing environmental hazards.

Soil pH adjustment: In agriculture, it can help regulate soil pH, making alkaline soils more suitable for acid-loving plants and creating a favorable growing environment for them.

Nutritional supplementation: Iron is an essential micronutrient for plant growth. Ferrous sulfate supplies iron to plants, effectively preventing and treating iron-deficiency chlorosis (yellowing of leaves). It promotes photosynthesis and chlorophyll synthesis, thereby enhancing the plant's disease resistance and overall growth vigor.   

Service Industries:

Water treatment industry

Wastewater treatment: Ferrous sulfate is widely used in the treatment of both industrial and municipal wastewater. It effectively removes suspended solids, phosphates, sulfides, and other impurities from wastewater. Additionally, it efficiently reduces color and removes heavy metal ions from effluents generated by industries such as textile dyeing and paper manufacturing, thereby improving water quality and ensuring compliance with discharge standards.

Drinking water treatment: In some regions, ferrous sulfate is used as a coagulant in drinking water treatment to remove impurities and turbidity, thereby improving the quality of drinking water.

Agricultural sector

Soil amendment: In alkaline soils, applying ferrous sulfate can lower the soil pH, increase acidity, and improve soil structure, thereby creating a suitable growing environment for acid-loving plants such as azaleas, camellias, and gardenias.

Plant fertilization: As an iron fertilizer, ferrous sulfate supplies essential iron to plants, preventing and treating iron-deficiency chlorosis. It enhances photosynthesis and stress resistance in plants, thereby improving crop yield and quality.

Industrial production

Pigment production: Ferrous sulfate is a key raw material in the manufacture of iron-based pigments, such as iron oxide red and iron oxide yellow. These pigments are widely used in industries including paints, inks, rubber, and plastics to provide vibrant colors to products.

Chemical industry: In the chemical industry, ferrous sulfate is used as a reducing agent, catalyst, and mordant. For example, it acts as a reducing agent in the production of vitamin C, and in the textile dyeing industry, it serves as a mordant to enhance dye fixation.

Pharmaceutical industry

Raw material for iron supplements: Iron is an essential trace element in the human body and plays a crucial role in hemoglobin synthesis. Ferrous sulfate serves as a key raw material in the production of iron supplements, used to treat iron-deficiency anemia and enhance the body's hematopoietic function.