Iron(II) Sulfate

FeSO₄

IUPAC: Iron(II) sulfate

CAS: 7720-78-7

Overview

Iron(II) sulfate (ferrous sulfate) is used as an iron supplement and in water treatment. Its green vitriol form has been known since antiquity.

Composition

Element	Symbol	Atoms	Atomic Mass
Oxygen	O	4	15.9990
Sulfur	S	1	32.0600
Iron	Fe	1	55.8450

Elemental Composition

Oxygen ×4

42.1%

Sulfur ×1

21.1%

Iron ×1

36.8%

Uses

• Iron supplement
• Water treatment
• Lawn moss killer
• Ink production

Fun Facts

✦ Iron gall ink, made from iron sulfate and tannins, was the standard writing ink from the 5th to 20th century

Safety

⚠ Can cause iron poisoning in children

Structure

SMILES

[O-]S(=O)(=O)[O-].[Fe+2]

Properties

Type: industrial
State: solid
Molar Mass: 151.91 g/mol
Density: 3.6500 g/cm³
Melting Point: 680.0 °C
Solubility: 295 g/L at 20°C

Molecular Descriptors

Exact Mass: 151.8867
TPSA: 88.6 Å²
H-Bond Donors: 0
H-Bond Acceptors: 4
Rotatable Bonds: 0
Heavy Atoms: 6
Complexity: 62.0

Related Compounds

Ammonium Nitrate

NH₄NO₃

Calcium Chloride

CaCl₂

Hydrogen Peroxide

H₂O₂

Potassium Dichromate

K₂Cr₂O₇

Potassium Permanganate

KMnO₄

Sodium Fluoride

NaF

Sodium Hypochlorite

NaClO

Sodium Silicate

Na₂SiO₃

Zinc Chloride

ZnCl₂

Frequently Asked Questions

What is Iron(II) Sulfate?

Iron(II) Sulfate (FeSO₄) is a industrial compound with the IUPAC name Iron(II) sulfate.

What is the molecular weight of Iron(II) Sulfate?

Iron(II) Sulfate has a molar mass of 151.91 g/mol.

What state is Iron(II) Sulfate at room temperature?

Iron(II) Sulfate is a solid at room temperature.

Is Iron(II) Sulfate organic or inorganic?

Iron(II) Sulfate is classified as an inorganic compound.

What elements make up Iron(II) Sulfate?

Iron(II) Sulfate (FeSO₄) is composed of Oxygen (O), Sulfur (S), Iron (Fe).