Calcium Hydroxide

Ca(OH)₂

IUPAC: Calcium hydroxide

CAS: 1305-62-0

Overview

Calcium hydroxide (slaked lime) is produced by adding water to quicklime. It is used in construction, water treatment, and agriculture.

Composition

Element Symbol Atoms Atomic Mass
Hydrogen H 2 1.0080
Oxygen O 2 15.9990
Calcium Ca 1 40.0780

Elemental Composition

H
Hydrogen ×2
2.7%
O
Oxygen ×2
43.2%
Ca
Calcium ×1
54.1%

Uses

  • • Mortar and plaster
  • • Water treatment
  • • Soil pH adjustment
  • • Food processing

Fun Facts

  • ✦ Ca(OH)₂ is used in dentistry as a cavity liner to stimulate dentin repair

Safety

  • ⚠ Irritant
  • ⚠ Can cause burns on prolonged contact

Structure

SMILES

[OH-].[OH-].[Ca+2]

Properties

Type
base
State
solid
Molar Mass
74.09 g/mol
Density
2.2100 g/cm³
Melting Point
580.0 °C
Solubility
1.5 g/L at 25°C

Molecular Descriptors

Exact Mass
73.9681
TPSA
2.0 Ų
H-Bond Donors
2
H-Bond Acceptors
2
Rotatable Bonds
0
Heavy Atoms
3
Complexity
0.0

Related Compounds

Aluminum Hydroxide

Al(OH)₃

Ammonia

NH₃

Barium Hydroxide

Ba(OH)₂

Lithium Hydroxide

LiOH

Magnesium Hydroxide

Mg(OH)₂

Potassium Hydroxide

KOH

Sodium Hydroxide

NaOH

Sodium Hydroxide Solution

NaOH(aq)

Frequently Asked Questions

What is Calcium Hydroxide?
Calcium Hydroxide (Ca(OH)₂) is a base compound with the IUPAC name Calcium hydroxide.
What is the molecular weight of Calcium Hydroxide?
Calcium Hydroxide has a molar mass of 74.09 g/mol.
What state is Calcium Hydroxide at room temperature?
Calcium Hydroxide is a solid at room temperature.
Is Calcium Hydroxide organic or inorganic?
Calcium Hydroxide is classified as an inorganic compound.
What elements make up Calcium Hydroxide?
Calcium Hydroxide (Ca(OH)₂) is composed of Hydrogen (H), Oxygen (O), Calcium (Ca).