Ammonium Persulfate

(NH₄)₂S₂O₈

IUPAC: Ammonium peroxodisulfate

CAS: 7727-54-0

Overview

Ammonium persulfate is the most commonly used initiator for free radical polymerization in emulsion and solution polymerizations.

Composition

Element Symbol Atoms Atomic Mass
Hydrogen H 8 1.0080
Nitrogen N 2 14.0070
Oxygen O 8 15.9990
Sulfur S 2 32.0600

Elemental Composition

H
Hydrogen ×8
3.5%
N
Nitrogen ×2
12.3%
O
Oxygen ×8
56.1%
S
Sulfur ×2
28.1%

Uses

  • • Polymerization initiator
  • • Hair bleaching
  • • PCB etching
  • • Gel electrophoresis

Fun Facts

  • ✦ Every PAGE gel in molecular biology labs is polymerized using ammonium persulfate

Safety

  • ⚠ Strong oxidizer
  • ⚠ Skin sensitizer

Structure

SMILES

[NH4+].[NH4+].[O-]S(=O)(=O)OOS(=O)(=O)[O-]

Properties

Type
inorganic
State
solid
Molar Mass
228.20 g/mol
Density
1.9820 g/cm³
Melting Point
120.0 °C
Solubility
820 g/L at 20°C

Molecular Descriptors

Exact Mass
227.9722
TPSA
152.0 Ų
H-Bond Donors
2
H-Bond Acceptors
8
Rotatable Bonds
1
Heavy Atoms
12
Complexity
206.0

Related Compounds

Aluminum Chloride

AlCl₃

Aluminum Nitride

AlN

Arsine

AsH₃

Barium Ferrite

BaFe₁₂O₁₉

Barium Titanate

BaTiO₃

Boron Nitride

BN

Boron Trichloride

BCl₃

Calcium Aluminate Cement

CaO·Al₂O₃

Calcium Carbide

CaC₂

Calcium Hydride

CaH₂

Frequently Asked Questions

What is Ammonium Persulfate?
Ammonium Persulfate ((NH₄)₂S₂O₈) is a inorganic compound with the IUPAC name Ammonium peroxodisulfate.
What is the molecular weight of Ammonium Persulfate?
Ammonium Persulfate has a molar mass of 228.2 g/mol.
What state is Ammonium Persulfate at room temperature?
Ammonium Persulfate is a solid at room temperature.
Is Ammonium Persulfate organic or inorganic?
Ammonium Persulfate is classified as an inorganic compound.
What elements make up Ammonium Persulfate?
Ammonium Persulfate ((NH₄)₂S₂O₈) is composed of Hydrogen (H), Nitrogen (N), Oxygen (O), Sulfur (S).