1,1,1,2-Tetrachloro-2,2-difluoroethane[3]

Updated: 2026-09-11

Overview

1,1,1,2-Tetrachloro-2,2-difluoroethane is a fully halogenated ethane derivative classified as a chlorofluorocarbon (CFC). Developed in the mid-20th century primarily for refrigeration applications, its use has declined due to ozone depletion concerns. As a CFC compound, it falls under international regulations like the Montreal Protocol, though some controlled industrial applications persist where alternatives are unavailable. The substance is chemically stable under normal conditions but undergoes photochemical decomposition in the stratosphere.

Physical and Chemical Properties

This compound presents as a colorless, heavy liquid with a characteristic ethereal odor. Its high density (1.63 g/cm³) and low viscosity make it suitable for certain specialized applications. The molecular structure featuring four chlorine and two fluorine atoms contributes to its thermodynamic properties. The substance exhibits excellent thermal stability below 300°C, with a boiling point of 92.8°C at atmospheric pressure. It is non-flammable and shows low acute toxicity, though chronic exposure risks require evaluation. Its ozone depletion potential (ODP) is approximately 0.7 relative to CFC-11.

Main Applications

Historically, this compound served as a refrigerant in centrifugal chillers and industrial cooling systems. Current niche applications include use as a solvent for precision cleaning in electronics manufacturing and as a dielectric fluid in specialized equipment. In chemical synthesis, it acts as an intermediate for producing fluorinated compounds. Some pharmaceutical applications utilize its properties for controlled reactions. Due to environmental regulations, most applications now require closed-loop systems to prevent atmospheric release.

Safety and Storage

Proper storage requires steel or fluoropolymer-lined containers in well-ventilated areas with temperature control below 30°C. Secondary containment is recommended to prevent environmental contamination in case of leaks. Personnel handling this material should use chemical-resistant gloves, eye protection, and respiratory equipment if vapor exposure is possible. Spill response requires non-sparking tools and chemical absorbents. Disposal must comply with local regulations for ozone-depleting substances.

B2B Procurement Guide

Industrial buyers should verify supplier compliance with international environmental agreements and local regulations. Technical specifications should include purity levels (typically >99%), moisture content (<50 ppm), and residual acidity testing results. Consider logistical requirements for safe transport, including proper UN packaging group classification. Many manufacturers now offer take-back programs for proper disposal or recycling. For reference, bulk pricing typically ranges between $50-$100/kg depending on quantity and purity requirements.