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Ferrous Fumarate: Key Chemical Properties and Applications

Ferrous fumarate is an iron supplement widely used in pharmaceuticals and food fortification due to its high bioavailability and stability. Understanding its chemical properties is essential for optimizing its applications in various industries.

Chemical Composition and Structure
Ferrous fumarate (C₄H₂FeO₄) is an iron(II) salt of fumaric acid. It consists of ferrous (Fe²⁺) ions bonded to fumarate anions, forming a reddish-brown or orange powder. Its molecular weight is 169.9 g/mol, and it has a solubility of 0.14 g/100 mL in water at 25°C, making it less soluble than other iron salts but more stable in acidic environments.

Stability and Reactivity
Ferrous fumarate is stable under dry conditions but can oxidize to ferric (Fe³⁺) compounds when exposed to moisture and air. It decomposes at high temperatures (above 280°C) without melting. Its low hygroscopicity reduces clumping, making it ideal for tablet formulations.

pH Sensitivity
It is most soluble in acidic media (pH < 3), which enhances iron absorption in the stomach. However, in neutral or alkaline conditions, it precipitates, reducing bioavailability. This property is crucial for designing effective iron supplements. Applications in Industry Due to its non-toxicity and high iron content (~33%), ferrous fumarate is a preferred ingredient in: - Pharmaceuticals: Treats iron-deficiency anemia. - Food Fortification: Added to cereals and flour. - Animal Feed: Enhances livestock health. SEO-Optimized Keywords ferrous fumarate chemical properties, iron supplement stability, ferrous fumarate solubility, Fe²⁺ bioavailability, iron deficiency treatment By leveraging these properties, manufacturers ensure effective and stable iron delivery in medical and nutritional products.