Octane

C₈H₁₈

IUPAC: Octane

CAS: 111-65-9

Overview

Octane is an eight-carbon alkane and a major component of gasoline. The 'octane rating' of fuel is based on isooctane's knock resistance.

Composition

Element Symbol Atoms Atomic Mass
Hydrogen H 18 1.0080
Carbon C 8 12.0110

Elemental Composition

H
Hydrogen ×18
15.9%
C
Carbon ×8
84.1%

Uses

  • • Gasoline component
  • • Octane rating standard
  • • Solvent

Fun Facts

  • ✦ The octane rating scale uses isooctane (100) and n-heptane (0) as reference points

Safety

  • ⚠ Highly flammable
  • ⚠ Harmful if inhaled

Structure

SMILES

CCCCCCCC

Properties

Type
organic
State
liquid
Molar Mass
114.23 g/mol
Density
0.7030 g/cm³
Melting Point
-56.8 °C
Boiling Point
125.7 °C
Solubility
Insoluble

Molecular Descriptors

Exact Mass
114.1409
XLogP
3.9
TPSA
0.0 Ų
H-Bond Donors
0
H-Bond Acceptors
0
Rotatable Bonds
5
Heavy Atoms
8
Complexity
25.0

Related Compounds

1,2-Dichloroethane

C₂H₄Cl₂

1,3-Butadiene

C₄H₆

1,4-Dioxane

C₄H₈O₂

1-Butanol

C₄H₁₀O

2-Propanol

C₃H₈O

Acetaldehyde

CH₃CHO

Acetamide

C₂H₅NO

Acetic Anhydride

C₄H₆O₃

Acetone

(CH₃)₂CO

Acetonitrile

C₂H₃N

Frequently Asked Questions

What is Octane?
Octane (C₈H₁₈) is a organic compound with the IUPAC name Octane.
What is the molecular weight of Octane?
Octane has a molar mass of 114.23 g/mol.
What state is Octane at room temperature?
Octane is a liquid at room temperature.
Is Octane organic or inorganic?
Octane is classified as an organic compound.
What elements make up Octane?
Octane (C₈H₁₈) is composed of Hydrogen (H), Carbon (C).