Product Name
Ferrous sulfate, >98%
Category
Other Glass and Ceramic Materials
Description
Ferrous sulfate appears as a greenish or yellow-brown crystalline solid. Density 15.0 lb /gal. Melts at 64°C and loses the seven waters of hydration at 90°C. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. Used for water or sewage treatment, as a fertilizer ingredient.;DryPowder; DryPowder, PelletsLargeCrystals; Liquid; OtherSolid; PelletsLargeCrystals
IUPAC Name
iron(2+);sulfate
Molecular Weight
151.91g/mol
Molecular Formula
FeO4S;FeO4S
Canonical SMILES
[O-]S(=O)(=O)[O-].[Fe+2]
InChI
InChI=1S/Fe.H₂O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2
InChI Key
BAUYGSIQEAFULO-UHFFFAOYSA-L
Density
1.9 at 59 °F (USCG, 1999);3.56 g/cu cm
Solubility
Soluble in water.
Application
Ferrous sulfate, with a purity of over 98%, is a vital compound primarily used as an iron supplement due to its effectiveness in treating iron deficiency anemia. Known for its distinctive greenish or yellowish crystalline form, ferrous sulfate has various hydrates, with the heptahydrate (FeSO4.7H2O), commonly referred to as green vitriol or copperas, being the most recognized. This blue-green, water-soluble crystal is produced by reacting iron and dilute sulfuric acid in a reducing environment. The compound is particularly significant because it replenishes iron levels in the body, addressing deficiencies that could lead to anemia. It is versatile, with the ability to decompose at high temperatures and absorb moisture from the air, making it suitable for various applications beyond nutrition.
Color/Form
White orthorhombic crystals, hygroscopic
Covalently-Bonded Unit Count
2
EC Number
231-753-5;240-616-9
Exact Mass
151.886665g/mol
MeSH Entry Terms
Aktiferrin;Apo-Ferrous Sulfate;biofer;Ceferro;Conferon;Eisendragees-ratiopharm;Eisensulfat Stada;Feospan;Fer-Gen-Sol;Fer-in-Sol;Feratab;Fero-Gradumet;Ferodan;Ferogradumet;Ferro-Gradumet;Ferrogamma;Ferrograd;FERROinfant;ferrous sulfate;ferrous sulfate, heptahydrate;ferrous sulphate;H?matopan;Haemoprotect;Hemobion;Hemofer;iron(II) sulfate heptahydrate;Kendural;Mol-Iron;Plastufer;Slow-Fe;Vitaferro Kapseln
Monoisotopic Mass
151.886665g/mol
Other Experimental
Standard molar enthalpy (heat) of formation at 298.15 deg K is -928.4 kJ/mol (crystal); Standard molar Gibbs energy of formation at 298.15 deg K is -820.8 kJ/mol (crystal); Standard molar entropy at 298.15 deg K is 107.5 J/mol K (crystal); Molar heat capacity at constant pressure at 298.15 deg K is 100.6 J/mol K (crystal);White to yellow crystalline powder. Sol in water. Loses water @ about 300 °C; decomp @ higher temp. /Ferrous sulfate monohydrate/;Pale, bluish-green monoclinic odorless crystals or granules. Efflorescent in dry air; forms tetrahydrate @ 56.6 °C and monohydrate @ 65 °C; density 1.897. Sol in water; practically insol in alc. /Ferrous sulfate heptahydrate/;INDEX OF REFRACTION: 1.471, 1.478, 1.486; MP 64 °C LOSING 6H₂O; BP 300 °C LOSING 7H₂O. /FERROUS SULFATE HEPTAHYDRATE/;Odorless; has saline, astringent taste. /Ferrous sulfate heptahydrate/;Density 2.970 at 25 °C; off-white, monoclinic crystals. /Ferrous sulfate monohydrate/;White, triclinic crystals; index of refraction 1.526, 1.536, 1.542; density 2.2; MP 300 °C losing 5H₂O; sol in cold & hot water, insol in alc. /Ferrous sulfate pentahydrate/;Green monoclinic prisms; index of refraction 1.533, 1.535; density 2.23-2.29. /Ferrous sulfate tetrahydrate/;pH 3.7 (10%) solution; hygroscopic /Ferrous sulfate heptahydrate/;Each part of ferrous sulfate heptahydrate requires 0.03 parts of oxygen or 0.126 parts of chlorine for oxidation to the ferric state. /Ferrous sulfate heptahydrate/;In moist air, oxidizes to yellow-brown basic iron(III) sulfate. Aqueous solutions tend to oxidize with the rate increasing with increasing pH, temperature, and light /Ferrous sulfate heptahydrate/;Sugar, glycerin, & many organic hydroxy acids hinder precipitation. In neutral solution, soluble carbonates, phosphates, & oxalates produce precipitation. /Ferrous salts/
Stability
In moist air, ferrous sulfate rapidly oxidizes and becomes coated with brownish-yellow ferric sulfate... . The rate of oxidation is increased by the addition of alkali or by exposure to light.
