Potassium Chloride

KCl

IUPAC: Potassium chloride

CAS: 7447-40-7

Overview

Potassium chloride is a salt used as a fertilizer and salt substitute. It is the most common potassium compound in agriculture.

Composition

Element Symbol Atoms Atomic Mass
Chlorine Cl 1 35.4500
Potassium K 1 39.0980

Elemental Composition

Cl
Chlorine ×1
47.6%
K
Potassium ×1
52.4%

Uses

  • • Fertilizer (potash)
  • • Salt substitute
  • • Medical IV fluids
  • • Lethal injection component

Fun Facts

  • ✦ KCl is used as a low-sodium salt alternative but tastes bitter to many people

Safety

  • ⚠ Toxic in large doses

Structure

SMILES

[Cl-].[K+]

Properties

Type
salt
State
solid
Molar Mass
74.55 g/mol
Density
1.9800 g/cm³
Melting Point
770.0 °C
Boiling Point
1420.0 °C
Solubility
344 g/L at 20°C

Molecular Descriptors

Exact Mass
73.9326
TPSA
0.0 Ų
H-Bond Donors
0
H-Bond Acceptors
1
Rotatable Bonds
0
Heavy Atoms
2
Complexity
2.0

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 Chloride?
Potassium Chloride (KCl) is a salt compound with the IUPAC name Potassium chloride.
What is the molecular weight of Potassium Chloride?
Potassium Chloride has a molar mass of 74.55 g/mol.
What state is Potassium Chloride at room temperature?
Potassium Chloride is a solid at room temperature.
Is Potassium Chloride organic or inorganic?
Potassium Chloride is classified as an inorganic compound.
What elements make up Potassium Chloride?
Potassium Chloride (KCl) is composed of Chlorine (Cl), Potassium (K).