1,1,1,2-tetrafluoroethane

Description

1,1,1,2-tetrafluoroethane · CAS 811-97-2 · C2H2F4. UNII DH9E53K1Y8. Boiling Point: -26.5 °C at 1 atmosphere; Boiling Point: -26 °C; Boiling Point: -26.2 °C @760 [mm Hg].

Identification

CAS Registry Number	811-97-2
PubChem CID	13129
Molecular formula	C2H2F4
IUPAC name	1,1,1,2-tetrafluoroethane
UNII (FDA)	DH9E53K1Y8

Computed Descriptors

Molecular Weight	102.03
XLogP3	1.7
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	0
Exact Mass	102.00926271
Monoisotopic Mass	102.00926271
Topological Polar Surface Area	0
Heavy Atom Count	6
Formal Charge	0

Physical & Chemical Properties

Boiling Point	-26.5 °C at 1 atmosphere
Boiling Point	-26 °C
Boiling Point	-26.2 °C @760 [mm Hg]
Melting Point	-103.296 °C
Melting Point	-101 °C
Density	1.2072 g/cu cm at 25 °C
Density	1.21 (L)
Vapor Pressure	4990 mm Hg at 25 °C
Vapor Pressure	96 [mm Hg] @25 °C
LogP	log Kow = 1.68

Physical description & handling notes

• 1,1,1,2-tetrafluoroethane appears as a colorless gas with a slight ethereal odor. Vapors are heavier than air. Shipped liquefied under own vapor pressure. Flash point 351 °F. Inhalation at high concentrations is harmful and may cause heart irregularities, unconsciousness or death without warning. Liquid contact may cause frostbite. Vapors can replace the available oxygen.
• Liquid; CBI; Gas Vapor
• Compressed liquefied gas; [ICSC] Slight ethereal odor; [CAMEO]
• COMPRESSED LIQUEFIED GAS WITH CHARACTERISTIC ODOUR.
• Colorless gas
• Colorless gas at ambient conditions

Regulatory Status

Regulatory & Food Contact	1,1,1,2-Tetrafluoroethane (HFC-134a) Use in the production of food flavors and flavorings as an extraction solvent Scientific procedures FDA has no questions INEOS Fluor, Ltd.
GHS notification summary	10.3% (57 / 556)

GHS Hazard Classification

GHS notification summary	10.3% (57 / 556)
Reported hazard statements	H280 (89.7%), H336

Documented Uses

• Used as a refrigerant, pharmaceutical propellant, and blowing agent for foams; [Merck Index #4714] Used to replace dichlorodifluoromethane as a refrigerant; [HSDB]
• Environmentally acceptable alternative to chlorofluorocarbons used as a refrigerant, solvent and propellant.
• Refrigerant, propellant for pharmaceuticals, blowing agent for foams.
• In refrigeration and air-conditioning systems CFC 12 is replaced by HFC 134a.
• HFC 134a ... can be used as ... /a propellant/ in medicinal aerosols instead of CFC 114.
• Energy Releasers (explosives, motive propellant)

Synonyms

1,1,1,2-TETRAFLUOROETHANE; Norflurane; 811-97-2; HFC-134a; Tetrafluoroethane; 1,2,2,2-Tetrafluoroethane; Refrigerant R134a; HFA 134a; HFA-134a; R-134a; Norflurano; Genetron 134a; Khladon 134a; Norfluranum; Arcton 134a; Dymel 134a

Frequently Asked Questions

What are the CAS number and molecular formula of 1,1,1,2-tetrafluoroethane?

CAS 811-97-2; molecular formula C2H2F4; molecular weight — g/mol.

What other names is 1,1,1,2-tetrafluoroethane known by?

1,1,1,2-TETRAFLUOROETHANE, Norflurane, 811-97-2, HFC-134a, Tetrafluoroethane, 1,2,2,2-Tetrafluoroethane.

What is the regulatory status of 1,1,1,2-tetrafluoroethane?

Documented regulatory listings: 1,1,1,2-Tetrafluoroethane (HFC-134a); Use in the production of food flavors and flavorings as an extraction solvent; Scientific procedures.

Is 1,1,1,2-tetrafluoroethane classified as hazardous?

10.3% of GHS notifications report no hazard classification (57 of 556).

What are the key physical properties of 1,1,1,2-tetrafluoroethane?

Boiling Point: -26.5 °C at 1 atmosphere; Boiling Point: -26 °C; Boiling Point: -26.2 °C @760 [mm Hg]; Melting Point: -103.296 °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.