Iron(III) Sulfate

Fe₂(SO₄)₃

IUPAC: Iron(III) sulfate

CAS: 10028-22-5

Overview

Iron(III) sulfate is a yellow-brown salt used in water treatment as a coagulant and in etching printed circuit boards.

Composition

Element Symbol Atoms Atomic Mass
Oxygen O 12 15.9990
Sulfur S 3 32.0600
Iron Fe 2 55.8450

Elemental Composition

O
Oxygen ×12
48.0%
S
Sulfur ×3
24.1%
Fe
Iron ×2
27.9%

Uses

  • • Water treatment coagulant
  • • PCB etching
  • • Soil amendment
  • • Dyeing mordant

Fun Facts

  • ✦ Used in water treatment plants worldwide to remove phosphates and clarify water

Safety

  • ⚠ Irritant
  • ⚠ Corrosive in solution

Structure

SMILES

[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[Fe+3].[Fe+3]

Properties

Type
salt
State
solid
Molar Mass
399.88 g/mol
Density
3.0970 g/cm³
Melting Point
480.0 °C
Solubility
440 g/L at 20°C

Molecular Descriptors

Exact Mass
399.7251
TPSA
266.0 Ų
H-Bond Donors
0
H-Bond Acceptors
12
Rotatable Bonds
0
Heavy Atoms
17
Complexity
62.0

Related Compounds

Ammonium Bicarbonate

NH₄HCO₃

Ammonium Chloride

NH₄Cl

Ammonium Sulfate

(NH₄)₂SO₄

Barium Carbonate

BaCO₃

Barium Chloride

BaCl₂

Barium Sulfate

BaSO₄

Cadmium Sulfide

CdS

Calcium Acetate

Ca(C₂H₃O₂)₂

Calcium Carbonate

CaCO₃

Calcium Citrate

Ca₃(C₆H₅O₇)₂

Frequently Asked Questions

What is Iron(III) Sulfate?
Iron(III) Sulfate (Fe₂(SO₄)₃) is a salt compound with the IUPAC name Iron(III) sulfate.
What is the molecular weight of Iron(III) Sulfate?
Iron(III) Sulfate has a molar mass of 399.88 g/mol.
What state is Iron(III) Sulfate at room temperature?
Iron(III) Sulfate is a solid at room temperature.
Is Iron(III) Sulfate organic or inorganic?
Iron(III) Sulfate is classified as an inorganic compound.
What elements make up Iron(III) Sulfate?
Iron(III) Sulfate (Fe₂(SO₄)₃) is composed of Oxygen (O), Sulfur (S), Iron (Fe).