n-Octacosane

CAS NO.：630-02-4
Empirical Formula: C28H58
Molecular Weight: 394.76
MDL number: MFCD00009355
EINECS: 211-125-7
SAFETY DATA SHEET (SDS)
Update Date: 2025-01-27 09:38:02

What is n-Octacosane?

Chemical properties

white powder or waxy solid

Definition

ChEBI: A straight-chain alkane containing 28 carbon atoms.

General Description

Waxy hydrocarbon, insoluble in water.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

Saturated aliphatic hydrocarbons, such as n-Octacosane, may be incompatible with strong oxidizing agents like nitric acid. Charring of the hydrocarbon may occur followed by ignition of unreacted hydrocarbon and other nearby combustibles. In other settings, aliphatic saturated hydrocarbons are mostly unreactive. They are not affected by aqueous solutions of acids, alkalis, most oxidizing agents, and most reducing agents. When heated sufficiently or when ignited in the presence of air, oxygen or strong oxidizing agents, they burn exothermically to produce carbon dioxide and water.

Fire Hazard

Flash point data for n-Octacosane is not available, but n-Octacosane is probably combustible.

Purification Methods

Purify it by forming its adduct with urea, washing it and crystallising it from acetone/water. [McCubbin Trans Faraday Soc 58 2307 1962.] Crystallise it then from hot filtered isopropyl ether solution (10mL/g). [Beilstein 1 IV 588.]

Properties of n-Octacosane

Melting point:	57-62 °C(lit.)
Boiling point:	278 °C15 mm Hg(lit.)
Density	0.8067
vapor density	13.6 (vs air)
vapor pressure	<1 mm Hg ( 20 °C)
refractive index	1.4330
Flash point:	227 °C
storage temp.	room temp
form	Shiny Flakes or Powder
color	White
Water Solubility	Soluble in chloroform, acetone, benzene, and toluene. Insoluble in water.
BRN	1770570
Stability:	Stable. Combustible. Incompatible with strong oxidizing agents.
CAS DataBase Reference	630-02-4(CAS DataBase Reference)
NIST Chemistry Reference	Octacosane(630-02-4)
EPA Substance Registry System	Octacosane (630-02-4)