R143A

Description

R143A · CAS 27987-06-0 · C2H3F3. UNII 84581C5PRN. Boiling Point: -47.20 °C; Melting Point: -111.8 °C; Density: Density: 1.176 g/mL at -50 °C.

Identification

CAS Registry Number	27987-06-0
PubChem CID	9868
Molecular formula	C2H3F3
IUPAC name	1,1,1-trifluoroethane
UNII (FDA)	84581C5PRN

Computed Descriptors

Molecular Weight	84.04
XLogP3	1.7
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	0
Exact Mass	84.01868458
Monoisotopic Mass	84.01868458
Topological Polar Surface Area	0
Heavy Atom Count	5
Formal Charge	0

Physical & Chemical Properties

Boiling Point	-47.20 °C
Melting Point	-111.8 °C
Density	Density: 1.176 g/mL at -50 °C
Vapor Density	3.1 (Air = 1)
Vapor Pressure	1262 kPa at 298.165 deg K (9465 mm Hg at 25 °C)
Heat of Combustion	-4.134X10+8 J/kmol

Physical description & handling notes

• 1.1.1-Trifluoroethane is a colorless, highly flammable gas. It is heavier than air and vapors may travel from a leaking container to a source of ignition causing a flame to flashback to the container. Contact with the unconfined liquid can cause frostbite. Under prolonged exposure to fire or heat the containers may rupture violently and rocket.
• Gas Vapor; CBI; Liquid
• A colorless, highly flammable gas; [CAMEO]
• Colorless gas
• Soluble in ethyl ether, chloroform
• When heated to decomposition it emits toxic vapors of /flouride/.

GHS Hazard Classification

Reported hazard statements	H220 (79.5%), H224 (12.1%), H280 (86.8%), H420

Documented Uses

• Blend component for air conditioning systems
• Intermediate for the manufacture of vinylidene fluoride
• ... used to make other chemicals and may be used as a refrigerant.
• Not Known or Reasonably Ascertainable
• Higher temperatures and higher hydrogen fluoride-to-substrate ratios are necessary to achieve complete replacement of all chlorine atoms in the starting chloro compounds by fluorine. Both liquid-phase halogen exchange in the presence of catalysts, such as antimony(V) or tin(IV) chlorofluorides and vapor phase reactions using solid-phase catalysts based on chromium are employed. Preferred starting materials are chloroform for HFC 23, dichloromethane for HFC 32, and 1,1,1-trichloroethane for HFC 143a. The conversion
• 2023: 4,000,000 - <5,500,000 lb

Synonyms

1,1,1-TRIFLUOROETHANE; 420-46-2; Methylfluoroform; 1,1,1-Trifluoroform; Fluorocarbon FC143a; HFC-143a; Ethane, 1,1,1-trifluoro-; R 143a; FC143a; 84581C5PRN; DTXSID9042047; RefChem:906566; DTXCID7022047; 206-996-5; Trifluoroethane; 27987-06-0

Frequently Asked Questions

What are the CAS number and molecular formula of R143A?

CAS 27987-06-0; molecular formula C2H3F3; molecular weight — g/mol.

What other names is R143A known by?

1,1,1-TRIFLUOROETHANE, 420-46-2, Methylfluoroform, 1,1,1-Trifluoroform, Fluorocarbon FC143a, HFC-143a.

Is R143A classified as hazardous?

Hazard statements reported: H220, H224, H280, H420.

What are the key physical properties of R143A?

Boiling Point: -47.20 °C; Melting Point: -111.8 °C; Density: Density: 1.176 g/mL at -50 °C; Vapor Density: 3.1 (Air = 1).

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.