Potassium Sulfate

K₂SO₄

IUPAC: Dipotassium sulfate

CAS: 7778-80-5

Overview

Potassium sulfate is a premium potassium fertilizer preferred for chloride-sensitive crops like tobacco, grapes, and citrus.

Composition

Element	Symbol	Atoms	Atomic Mass
Oxygen	O	4	15.9990
Sulfur	S	1	32.0600
Potassium	K	2	39.0980

Elemental Composition

Oxygen ×4

36.7%

Sulfur ×1

18.4%

Potassium ×2

44.9%

Uses

• Chloride-free potassium fertilizer
• Glass production
• Gypsum substitute in food

Fun Facts

✦ Preferred over KCl for sensitive crops because excess chloride damages tobacco and citrus flavor

Structure

SMILES

[O-]S(=O)(=O)[O-].[K+].[K+]

Properties

Type: salt
State: solid
Molar Mass: 174.26 g/mol
Density: 2.6600 g/cm³
Melting Point: 1069.0 °C
Solubility: 120 g/L at 25°C

Molecular Descriptors

Exact Mass: 173.8791
TPSA: 88.6 Å²
H-Bond Donors: 0
H-Bond Acceptors: 4
Rotatable Bonds: 0
Heavy Atoms: 7
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 Potassium Sulfate?

Potassium Sulfate (K₂SO₄) is a salt compound with the IUPAC name Dipotassium sulfate.

What is the molecular weight of Potassium Sulfate?

Potassium Sulfate has a molar mass of 174.26 g/mol.

What state is Potassium Sulfate at room temperature?

Potassium Sulfate is a solid at room temperature.

Is Potassium Sulfate organic or inorganic?

Potassium Sulfate is classified as an inorganic compound.

What elements make up Potassium Sulfate?

Potassium Sulfate (K₂SO₄) is composed of Oxygen (O), Sulfur (S), Potassium (K).