1,4-DIOXANE - (123-91-1) - Physical Properties • Chemical Properties • Solubility • Uses/Function • Reactions • Thermochemistry

Introduction

Name: 1,4-dioxane; 1,4-dioxacyclohexane; p-dioxane
* IUPAC
CAS Number: 123-91-1
Chemical Formula: C₄H₈O₂
Molar Mass: 88.10512 g
Mass Percent: C 54.528 %; H 9.1521 %; O 36.318 %
Isomers: aldol • butanoic acid* • ethyl acetate* • 2-methyl-1,3-dioxolane • 1,3-dioxane • acetyl methyl carbinol

Classification

• organic • ether

Bonding

Double Bonds: 0
Triple Bonds: 0
Sigma Bonds: 14
Pi Bonds: 0
Total: 14
Carboxyl Groups: 0
Hydroxyl Groups: 0

Thermochemistry

ΔHf° (ℓ): -84.47 kcal/mol 1 = -353.42 kJ/mol
ΔHf° (g): -75.30 kcal/mol 1 = -315.06 kJ/mol

S° (ℓ): 46.67 cal/(mol•K) 2 = 195.27 J/(mol•K)
S° (g): 71.65 cal/(mol•K) 2 = 299.78 J/(mol•K)

ΔGf° (ℓ): -44.96 kcal/mol 3 = -188.11 kJ/mol
ΔGf° (g): -43.21 kcal/mol 3 = -180.79 kJ/mol

The heat of combustion is the amount of heat released when one mole of a substance undergoes combustion according to the general reaction equation:
CxHyOz + 0.25(4x+y-2z) O2 (g) → x CO2 (g) + 0.5y H2O (ℓ)

ΔHcomb° (ℓ): -564.99 kcal = -2363.93752 kJ
ΔHcomb° (g): -574.16 kcal = -2402.3048 kJ

For More Information

Wikipedia

Sources

(1) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:76.
(2) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:76.
(3) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:76.