Description

Ferrous Sulfate Heptahydrate is a hydrated inorganic salt of iron, widely recognized for its role as a versatile reducing agent and essential nutrient source. Its importance lies in providing a bioavailable and cost-effective form of iron(II) for numerous industrial, agricultural, and nutritional applications. This compound is a critical raw material for manufacturers in water treatment, animal feed, agriculture, and the chemical industry, where reliable quality and consistent supply are paramount.

Application

• Water and Wastewater Treatment: Acts as a reducing agent, coagulant, and flocculant for phosphate removal, odor control, and sludge conditioning.
• Animal Nutrition (Feed Grade): Serves as a vital iron supplement in premixes to prevent anemia and support animal health and growth.
• Agricultural Micronutrient (Fertilizer): Used to correct iron chlorosis (yellowing) in crops and enrich soils deficient in available iron.
• Chemical Manufacturing: A key precursor for producing other iron compounds, pigments (e.g., iron oxide), and as a reducing agent in chemical synthesis.
• Cement and Construction: Employed as a reducing agent to minimize hexavalent chromium content in cement, enhancing workplace safety.
• Food Fortification (Food Grade): Used under strict specifications to fortify staple foods like wheat flour to combat iron deficiency in human populations.

Basic Information

Product Name	Ferrous Sulfate Heptahydrate
CAS No.	7782-63-0
Molecular Formula	FeSO₄·7H₂O
Molecular Weight	278.01 g/mol
Synonyms	Iron(II) sulfate heptahydrate; Ferrous sulphate heptahydrate; Green vitriol; Copperas; Iron vitriol; Feosol; Irosul; Melanterite; Szomolnokite (mineral form); Iron monosulfate heptahydrate
EINECS	231-753-5

Quality Control

Our Ferrous Sulfate Heptahydrate is manufactured under a stringent quality management system. Production is monitored against rigorous in-process controls and final release specifications, which may align with relevant industry standards such as USP, FCC, or feed-grade monographs depending on the product grade. A comprehensive Certificate of Analysis (COA) detailing assay, purity, and impurity profiles is provided with each shipment to ensure traceability and compliance.

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 will cause caking and oxidation to ferric state. Isolate from strong oxidizing agents.

Specification

Item	Specification
Appearance	Blue-green crystals or granules
Identification (IR)	Conforms
Assay (FeSO₄·7H₂O)	≥ 98.0 %
Iron (Fe) Content	≥ 19.0 %
Water Insoluble Matter	≤ 0.5 %
pH (5% Solution)	3.0 - 4.0
Heavy Metals (as Pb)	≤ 20 ppm
Arsenic (As)	≤ 3 ppm

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