Chlorotrifluoroethylene
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Chlorotrifluoroethylene

CAS No.:79-38-9

Appearance:Colorless gas at ambient conditions; liquefied gas under pressure
Packing:Dedicated cylinders or pressure vessels; package size and inhibitor system are subject to the supply agreement.
DG Class:2.1 (Flammable gas)
UN Number:UN 1082
Specification:Batch-specific specification (COA)
Storage Condition:Store in an approved pressure vessel in a cool, dry, well-ventilated area away from heat, ignition sources, oxidizers, and incompatible materials. Maintain the specified inhibitor system and follow the supplier SDS.
SynonymsChlorotrifluoroethylene|Chlorotrifluoroethene|CTFE|Trifluorochloroethylene|Trifluorovinyl chloride
  • Batch-specific specification (COA)

Product Overview

Product Overview

Chlorotrifluoroethylene (CTFE, CAS 79-38-9) is a chlorinated fluorocarbon olefin monomer with the molecular formula C2ClF3 and a molecular weight of 116.47. It is a colorless gas at ambient conditions and has a boiling point of approximately -28.3°C. Its carbon-carbon double bond supports homopolymerization and copolymerization, making CTFE an important feedstock for polychlorotrifluoroethylene (PCTFE), fluorocopolymers, fluoroelastomers, and other specialty fluoromaterials.

Key Applications

  • PCTFE Resins: Used to produce polychlorotrifluoroethylene materials with strong barrier properties, chemical resistance, low moisture absorption, and dimensional stability.
  • Fluorocopolymers: Copolymerized with ethylene, vinylidene fluoride, and other fluorinated monomers for wire and cable materials, coatings, films, and seals.
  • Fluoroelastomers: Used as a comonomer in specialty fluorinated elastomers to support chemical, weathering, and low-temperature performance.
  • Fluorinated Intermediates: Applied in the synthesis and development of high-performance fluorochemicals and functional materials.

Product Features

  • Clearly identified by CAS 79-38-9 for quality control and supply-chain traceability
  • Contains both chlorine and fluorine, enabling distinctive processing, barrier, and chemical-resistance properties in derived polymers
  • Suitable for homopolymerization, copolymerization, and fluorochemical synthesis
  • Classified as a flammable liquefied gas (UN 1082, hazard class 2.1) and normally transported in dedicated pressure vessels with an inhibitor
  • Final specifications, inhibitor system, and packaging are subject to the batch COA, SDS, and supply agreement
Product Advantages
  • Combined chlorine and fluorine functionality supports high-barrier, chemically resistant, low-moisture polymer systems
  • Compatible with homopolymerization and multiple copolymer routes for tailored fluoromaterial performance
  • Applicable to resins, films, coatings, wire and cable compounds, and sealing materials
  • Batch COA and SDS documentation can be supplied subject to commercial terms
Reference Standard
Product NameChlorotrifluoroethylene (CTFE)
CAS Number79-38-9
Molecular FormulaC2ClF3
Molecular Weight116.47
AppearanceColorless gas at ambient conditions; liquefied gas under pressure
Boiling PointApproximately -28.3°C
Melting PointApproximately -154.9°C
UN NumberUN 1082
Hazard Class2.1 (flammable gas)
Quality StandardPurity, moisture, acidity, and inhibitor content are subject to the batch COA
Product Uses
  • Polychlorotrifluoroethylene (PCTFE) resins and articles
  • Fluorocopolymers including ethylene-chlorotrifluoroethylene (ECTFE)
  • Fluoroelastomers and specialty fluorinated elastomers
  • High-barrier films, chemical-resistant coatings, wire and cable materials, and seals
  • Intermediates for fluorinated fine chemicals and functional materials
Product Photos
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Chemical Properties

Chlorotrifluoroethylene
CAS No.
79-38-9
Appearance
Colorless gas at ambient conditions; liquefied gas under pressure
Packing
Dedicated cylinders or pressure vessels; package size and inhibitor system are subject to the supply agreement.
Storage Condition
Store in an approved pressure vessel in a cool, dry, well-ventilated area away from heat, ignition sources, oxidizers, and incompatible materials. Maintain the specified inhibitor system and follow the supplier SDS.
Matter Classification
Halogenated hydrocarbon; fluorochemical monomer
Category
Fluorochemical Raw Material; Fluorinated Monomer
UN Number
UN 1082
DG Class
2.1 (Flammable gas)
Molecular Formula
C2ClF3
Molecular Weight
116.47
Specification
Batch-specific specification (COA)
IUPAC
1-chloro-1,2,2-trifluoroethene
PSA
0 Ų
InChIKey
UUAGAQFQZIEFAH-UHFFFAOYSA-N
SMILES
C(=C(F)Cl)(F)F
Melting Point
-154.9°C
Boiling Point
-28.3°C
Density
1.386 g/mL at 25°C

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