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Description

pentafluoroethane · CAS 354-33-6 · C2HF5. UNII 6TQ8593LRQ. Boiling Point: -48.1 °C; Melting Point: -100.6 °C; Vapor Pressure: 9501 mm Hg at 25 °C.

Identification

CAS Registry Number	354-33-6
PubChem CID	9633
Molecular formula	C2HF5
IUPAC name	1,1,1,2,2-pentafluoroethane
UNII (FDA)	6TQ8593LRQ

Computed Descriptors

Molecular Weight	120.02
XLogP3	2.2
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	5
Rotatable Bond Count	0
Exact Mass	119.99984084
Monoisotopic Mass	119.99984084
Topological Polar Surface Area	0
Heavy Atom Count	7
Formal Charge	0

Physical & Chemical Properties

Boiling Point	-48.1 °C
Melting Point	-100.6 °C
Vapor Pressure	9501 mm Hg at 25 °C
LogP	1.45

Physical description & handling notes

• Pentafluoroethane appears as a nonflammable gas. Heavier than air. May asphyxiate by the displacement of air in confined spaces. Exposure of the container to prolonged heat or fire can cause it to rupture violently and rocket.
• CBI; Gas Vapor; Liquid
• A nonflammable gas; [CAMEO]
• Colorless gas
• Liquid density = 1.23 g/cu cm at 20 °C
• When heated to decomposition it emits toxic vapors of /flouride/.

GHS Hazard Classification

Reported hazard statements	H280 (100%)

Documented Uses

• Used as a replacement for chlorofluorocarbons; [HSDB] Used as a refrigerant, fire extinguishing agent, plastic foam blowing agent, and solvent in special applications; [eChemPortal: SIDSUNEP]
• According to the AFEAS database, more than 99% of HFC-125 produced worldwide by the reporting companies is used as a blend component for commercial refrigeration and air conditioning systems. The use as a fire-extinguishing agent in total flooding systems is another application of HFC-125. Minor applications include the use of HFC-125 in plastic foam blowing and as a solvent in special applications.
• • Air Conditioner/Refrigeration in Industrial gas manufacturing [Ref:
• • Functional fluids (closed systems) in machinery manufacturing [Ref:
• • Heat transfer agent [Ref:
• • Construction [Ref:

Synonyms

PENTAFLUOROETHANE; 354-33-6; 1,1,1,2,2-Pentafluoroethane; Ethane, pentafluoro-; HFC-125; 1,1,2,2,2-Pentafluoroethane; Khladon 125; Fron 125; Freon 125; HCFC 125; Ethane, 1,1,1,2,2-pentafluoro-; FC 125; 6TQ8593LRQ; R 125; RefChem:859807; 206-557-8

Frequently Asked Questions

What are the CAS number and molecular formula of pentafluoroethane?

CAS 354-33-6; molecular formula C2HF5; molecular weight — g/mol.

What other names is pentafluoroethane known by?

PENTAFLUOROETHANE, 354-33-6, 1,1,1,2,2-Pentafluoroethane, Ethane, pentafluoro-, HFC-125, 1,1,2,2,2-Pentafluoroethane.

Is pentafluoroethane classified as hazardous?

Hazard statements reported: H280.

What are the key physical properties of pentafluoroethane?

Boiling Point: -48.1 °C; Melting Point: -100.6 °C; Vapor Pressure: 9501 mm Hg at 25 °C; LogP: 1.45.

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.