二十八烷

Description

Octacosane · CAS 630-02-4 · C28H58. UNII VFF49836P8. Boiling Point: 808.9 °F at 760 mmHg (NTP, 1992); Boiling Point: 432 °C; Boiling Point: 440 °C @760 [mm Hg].

Identification

Computed Descriptors

Physical & Chemical Properties

Physical description & handling notes

• Waxy hydrocarbon, insoluble in water.
• Waxy solid; [CAMEO] White powder; [MSDSonline]
• Monoclinic or orthorhombic crystals from benzene, alcohol
• Insoluble in water
• Miscible with acetone, soluble in benzene, chloroform
• 0.8067 at 68 °F (NTP, 1992) - Less dense than water; will float

Regulatory Status

GHS Hazard Classification

Documented Uses

• They are used mainly in applications for which isoalkanes are not acceptable for biological reasons, e.g., the production of detergents or proteins. /Higher n-Alkanes/
• Solid n-alkanes (paraffin waxes) are used in a variety of applications, e.g., ... oxidation, and chlorination reactions. /Higher n-Alkanes/
• The liquefaction of coal provides the greatest variety of saturated hydrocarbons. The Fischer-Tropsch synthesis produces alkanes from syngas (CO + H2) in the range C1 to C30 or higher depending on the process variant: depending on the catalyst employed, the synthesis yields predominantly liquid hydrocarbons in the gasoline range, along with gases from C1 to C4 when iron-based catalysts are used, while cobalt-based catalysts produce longer chain hydrocarbons in the diesel and wax range that often undergo, depending
• Suitable sources for n-alkanes with more than six carbon atoms are the appropriate petroleum distillate fractions, from which the n-paraffins can be isolated in high isomeric purity (= 95% linearity) by selective separation techniques, especially fractional distillation. /Higher n-Alkanes/
• Gas-phase dehydrogenation of n-alkanes over noble-metal catalysts yield the corresponding n-alkenes at low conversion rates (ca. 10%) with predominantly internal double bonds. The corresponding alkenes can be isolated in high purity by selective molecular-sieve processes. /Higher n-Alkanes/

Synonyms

OCTACOSANE; n-Octacosane; 630-02-4; DTXSID6058639; VFF49836P8; NSC-5549; CHEBI:32943; RefChem:43509; DTXCID4032326; 211-125-7; Octacosane, n-; MFCD00009355; NSC 5549; CH3-[CH2]26-CH3; NSC 5549; n-Octacosane; Octacosane, analytical standard

Frequently Asked Questions

What are the CAS number and molecular formula of Octacosane?

CAS 630-02-4; molecular formula C28H58; molecular weight — g/mol.

What other names is Octacosane known by?

OCTACOSANE, n-Octacosane, 630-02-4, DTXSID6058639, VFF49836P8, NSC-5549.

Is Octacosane classified as hazardous?

100% of GHS notifications report no hazard classification (7 of 7).

What are the key physical properties of Octacosane?

Boiling Point: 808.9 °F at 760 mmHg (NTP, 1992); Boiling Point: 432 °C; Boiling Point: 440 °C @760 [mm Hg]; Melting Point: 148.1 °F (NTP, 1992).

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.