Description

Ferrous Sulfate Tetrahydrate is an inorganic salt and a vital source of bioavailable iron. This compound matters for its critical role in water treatment, agriculture, and as a nutritional supplement, offering a cost-effective solution for iron supplementation and reduction-oxidation processes. Industries that need it include municipal water and wastewater treatment, animal feed manufacturing, fertilizer production, and the chemical synthesis sector. It is supplied as a blue-green crystalline solid under the identifier CAS NO 20908-72-9.

Application

• Water & Wastewater Treatment: Acts as a coagulant and flocculant for phosphate removal and odor control in municipal and industrial water systems.
• Animal Nutrition: Serves as an essential iron supplement in premixes and feed formulations to prevent anemia and support animal health.
• Agricultural Fertilizers: Used as a soil amendment and in micronutrient fertilizers to correct iron chlorosis in crops.
• Chemical Manufacturing: Functions as a reducing agent and a precursor in the production of other iron compounds and pigments.
• Cement & Construction: Employed as a setting retarder and to enhance the durability of concrete.
• Food Fortification: Utilized in specific food-grade applications for iron enrichment, subject to appropriate purity standards.

Basic Information

Product Name	Ferrous Sulfate Tetrahydrate
CAS No.	20908-72-9
Molecular Formula	FeSO₄·4H₂O
Molecular Weight	223.93 g/mol
Synonyms	Iron(II) sulfate tetrahydrate; Ferrous sulphate tetrahydrate; Green vitriol; Iron vitriol; Copperas; Feosol; Irosul; Ironate; Fer-In-Sol
EINECS	Contact for details

Quality Control

Our Ferrous Sulfate Tetrahydrate is manufactured under a rigorous quality management system. Production adheres to strict in-process controls, and every batch is analyzed to ensure it meets defined specifications for purity, identity, and physical properties. While available in technical and feed grades, our processes are designed to support requirements for higher purity applications. Certificates of Analysis (COA) documenting batch-specific results are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and easily oxidized; prolonged exposure to air and moisture should be avoided to prevent caking and oxidation.

Specification

Item	Specification
Appearance	Blue-green crystals or crystalline powder
Identification (IR)	Conforms
Assay (FeSO₄·4H₂O)	≥ 98.0 %
Iron (Fe) Content	≥ 24.0 %
Water Insoluble Matter	≤ 0.5 %
pH (5% Solution)	3.0 - 4.0

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.