二十烷

Description

Eicosane · CAS 112-95-8 · C20H42. UNII 3AYA9KEC48. Boiling Point: 648.9 °F at 760 mmHg (NTP, 1992); Boiling Point: 344.1 °C; Boiling Point: BP: 220 °C at 30 mm Hg.

Identification

CAS Registry Number	112-95-8
PubChem CID	8222
Molecular formula	C20H42
IUPAC name	icosane
UNII (FDA)	3AYA9KEC48

Computed Descriptors

Molecular Weight	282.5
XLogP3	10.4
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	0
Rotatable Bond Count	17
Exact Mass	282.328651340
Monoisotopic Mass	282.328651340
Topological Polar Surface Area	0
Heavy Atom Count	20
Formal Charge	0

Physical & Chemical Properties

Boiling Point	648.9 °F at 760 mmHg (NTP, 1992)
Boiling Point	344.1 °C
Boiling Point	BP: 220 °C at 30 mm Hg
Melting Point	98.1 °F (NTP, 1992)
Melting Point	36.48 °C
Flash Point	212 °F (NTP, 1992)
Flash Point	> 113.00 °C (> 235.40 °F) - closed cup
Solubility	In water, 1.9X10-3 mg/L at 25 °C
Density	0.7886 g/cu cm at 20 °C
Vapor Pressure	4.62X10-6 mm Hg at 25 °C

Physical description & handling notes

• N-eicosane appears as colorless crystals or white crystalline solid. (NTP, 1992)
• Other Solid
• Colorless or white solid; mp = 36.7 deg C; [CAMEO] White solid; [Acros Organics MSDS]
• Leaflets from alcohol
• White crystalline solid
• Odorless

Regulatory Status

Regulatory & Food Contact	FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS
GHS notification summary	40.4% (116 / 287)

GHS Hazard Classification

GHS notification summary	40.4% (116 / 287)
Reported hazard statements	H304 (59.6%)

Documented Uses

• Used in cosmetics, lubricants, and plasticizers; [NTP]
• Cosmetic, lubricants, plasticizers.
• 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/
• Not Known or Reasonably Ascertainable
• 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

Synonyms

EICOSANE; n-Eicosane; Icosane; 112-95-8; 3AYA9KEC48; NSC-62789; DTXSID1025227; CHEBI:43619; DIDECYL; RefChem:5787; DTXCID305227; 204-018-1; n-icosane; MFCD00009344; Eicosane, analytical standard; Nonadecane, methyl-

Frequently Asked Questions

What are the CAS number and molecular formula of Eicosane?

CAS 112-95-8; molecular formula C20H42; molecular weight — g/mol.

What other names is Eicosane known by?

EICOSANE, n-Eicosane, Icosane, 112-95-8, 3AYA9KEC48, NSC-62789.

What is the regulatory status of Eicosane?

Documented regulatory listings: FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS.

Is Eicosane classified as hazardous?

40.4% of GHS notifications report no hazard classification (116 of 287).

What are the key physical properties of Eicosane?

Boiling Point: 648.9 °F at 760 mmHg (NTP, 1992); Boiling Point: 344.1 °C; Boiling Point: BP: 220 °C at 30 mm Hg; Melting Point: 98.1 °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.