二十七烷

Description

heptacosane · CAS 593-49-7 · C27H56. UNII VP371W2GJS. Boiling Point: 442 °C; Melting Point: 58.8 °C; Density: Density: 0.7796 g/cu cm at 60 °C.

Identification

CAS Registry Number	593-49-7
PubChem CID	11636
Molecular formula	C27H56
IUPAC name	heptacosane
UNII (FDA)	VP371W2GJS

Computed Descriptors

Molecular Weight	380.7
XLogP3	14.2
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	0
Rotatable Bond Count	24
Exact Mass	380.438201786
Monoisotopic Mass	380.438201786
Topological Polar Surface Area	0
Heavy Atom Count	27
Formal Charge	0

Physical & Chemical Properties

Boiling Point	442 °C
Melting Point	58.8 °C
Density	Density: 0.7796 g/cu cm at 60 °C

Physical description & handling notes

• White crystalline powder; [Alfa Aesar MSDS]
• Crystals form alcohol, benzene; leaves from ethyl acetate
• Insoluble in water
• Insoluble in ethanol; slightly soluble in ether
• VP: 1 Pa at 136.7 °C; 10 Pa at 168.8 °C; 100 Pa 206.5 °C; 1 kPa at 255.8 °C; 10 kPa at 323.3 °C; 100 kPa at 421.2 °C
• 2.8X10-9 mg/L at 25 °C (extrapolated)

Regulatory Status

GHS notification summary	100% (5 / 5)

GHS Hazard Classification

GHS notification summary	100% (5 / 5)

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

HEPTACOSANE; n-Heptacosane; EINECS 209-792-4; AI3-36283; DTXSID6058637; CHEBI:32941; HSDB 8357; CH3-[CH2]25-CH3; CH3-(CH2)25-CH3; nHeptacosane; RefChem:145604; DTXCID4032324; 209-792-4; BJQWYEJQWHSSCJ-UHFFFAOYSA-N; 593-49-7; MFCD00009862

Frequently Asked Questions

What are the CAS number and molecular formula of heptacosane?

CAS 593-49-7; molecular formula C27H56; molecular weight — g/mol.

What other names is heptacosane known by?

HEPTACOSANE, n-Heptacosane, EINECS 209-792-4, AI3-36283, DTXSID6058637, CHEBI:32941.

Is heptacosane classified as hazardous?

100% of GHS notifications report no hazard classification (5 of 5).

What are the key physical properties of heptacosane?

Boiling Point: 442 °C; Melting Point: 58.8 °C; Density: Density: 0.7796 g/cu cm at 60 °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.