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

Hydrogen ×18

15.9%

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 Å²
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).