Triacontane

Description

Triacontane · CAS 638-68-6 · C30H62. UNII 47A73V7096. Boiling Point: 841.5 °F at 760 mmHg (NTP, 1992); Boiling Point: 451 °C; Melting Point: 150.4 °F (NTP, 1992).

Identification

CAS Registry Number	638-68-6
PubChem CID	12535
Molecular formula	C30H62
IUPAC name	triacontane
UNII (FDA)	47A73V7096

Computed Descriptors

Molecular Weight	422.8
XLogP3	15.8
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	0
Rotatable Bond Count	27
Exact Mass	422.485151978
Monoisotopic Mass	422.485151978
Topological Polar Surface Area	0
Heavy Atom Count	30
Formal Charge	0

Physical & Chemical Properties

Boiling Point	841.5 °F at 760 mmHg (NTP, 1992)
Boiling Point	451 °C
Melting Point	150.4 °F (NTP, 1992)
Melting Point	65.9 °C
Density	0.8097 g/cu cm at 20 °C

Physical description & handling notes

• Aliphatic hydrocarbon waxy solid.
• Waxy solid; [CAMEO] White flakes; [Acros Organics MSDS]
• Orthorhombic crystals from ether, benzene
• Insoluble in water
• Soluble in ether; slightly soluble in ethanol; very soluble in benzene
• 0.775 at 172 °F (NTP, 1992) - Less dense than water; will float

Regulatory Status

GHS notification summary	100% (6 / 6)

GHS Hazard Classification

GHS notification summary	100% (6 / 6)

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

TRIACONTANE; n-Triacontane; 638-68-6; NSC 158661; DTXSID0060935; CHEBI:31006; HSDB 8360; UNII-47A73V7096; EINECS 211-349-5; NSC-158661; 47A73V7096; CH3-(CH2)28-CH3; CH3-[CH2]28-CH3; RefChem:52411; DTXCID9044110; 211-349-5

Frequently Asked Questions

What are the CAS number and molecular formula of Triacontane?

CAS 638-68-6; molecular formula C30H62; molecular weight — g/mol.

What other names is Triacontane known by?

TRIACONTANE, n-Triacontane, 638-68-6, NSC 158661, DTXSID0060935, CHEBI:31006.

Is Triacontane classified as hazardous?

100% of GHS notifications report no hazard classification (6 of 6).

What are the key physical properties of Triacontane?

Boiling Point: 841.5 °F at 760 mmHg (NTP, 1992); Boiling Point: 451 °C; Melting Point: 150.4 °F (NTP, 1992); Melting Point: 65.9 °C.

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.