431-06-1

Basic information

• Product Name: 1,2-Dichloro-1,2-difluoroethane
• Synonyms: 1,2-Dichloro-1,2-difluoroethane;1,2-Difluoro-1,2-dichloroethane; Freon 132; HCFC 132; R 132; R 132(refrigerant)
• CAS NO: 431-06-1
• Molecular Formula: C₂H₂Cl₂F₂
• Molecular Weight: 134.94
• EINECS: 207-070-3
• Mol File: 431-06-1.mol
• Article Data: 11

Chemical Properties

• Boiling Point: 58-59°C
• Flash Point: °C
• Appearance: /
• Density: 1.416g/cm³
• Vapor Pressure: 195mmHg at 25°C
• Refractive Index: 1.361
• CAS DataBase Reference: 1,2-Dichloro-1,2-difluoroethane(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2-Dichloro-1,2-difluoroethane(431-06-1)
• EPA Substance Registry System: 1,2-Dichloro-1,2-difluoroethane(431-06-1)

Safety Data

• Hazardous Substances Data: 431-06-1(Hazardous Substances Data)

Usage

General Description

1,2-Dichloro-1,2-difluoroethane, also known by its trade name Freon 112, is a colorless, odorless, and non-flammable chemical compound. It is commonly used as a refrigerant and in the production of foam blowing agents. Due to its chemical properties, it is also used as a solvent for various organic compounds. However, 1,2-Dichloro-1,2-difluoroethane has been found to be an ozone-depleting substance and a potent greenhouse gas, leading to its restriction and phase-out in many countries under the Montreal Protocol. Additionally, it has been classified as a hazardous air pollutant by the U.S. Environmental Protection Agency due to its potential for causing respiratory and central nervous system effects in humans.

InChI:InChI=1/C2H2Cl2F2/c3-1(5)2(4)6/h1-2H

Upstream product

• 79-34-5 1,1,2,2-tetrachloroethane 
• 1512-28-3 (+/-)-chlorofluoroiodomethane 
• 430-88-6 threo-1-bromo-2-fluoro-1,2-dichloroethane 
• 430-88-6 erythro-1-bromo-2-fluoro-1,2-dichloroethane 
• 156-60-5 trans-1,2-dichloroethylene 
• 156-59-2 cis-1,2-Dichloroethylene 
• 1691-13-0 1,2-difluoroethene 
• 540-59-0 1,2-Dichloroethylene 
• 430-88-6 threo-1-bromo-2-fluoro-1,2-dichloroethane 
• 430-88-6 erythreo-1-bromo-2-fluoro-1,2-dichloroethane 
• 76-12-0 CFC-112a 
• 624-72-6 1,2-difluoroethane 

Downstream Products

• 359-04-6 1-chloro-1,2-difluoroethene 
• 1691-13-0 1,2-difluoroethene 
• 1630-77-9 (Z)-1,2-difluoro-ethene 
• 1630-78-0 (E)-1,2-difluoroethene 
• 116-14-3 polytetrafluoroethylene 
• 2268-32-8 trans-1-chloro-2-fluoroethylene 
• 79-38-9 Chlorotrifluoroethylene 
• 2837-86-7 cis-1,2-difluoro-1-chloroethene 

Relevant articles and documents

METHOD FOR PRODUCING 1-CHLORO-1,2-DIFLUOROETHYLENE

PROBLEM TO BE SOLVED: To provide a method for efficiently and economically producing 1-chloro-1,2-difluoroethylene that can industrially be performed. SOLUTION: The method for producing 1-chloro-1,2-difluoroethylene comprises bringing 1,2-dichloro-1,2-difluoroethane into contact with an alkali aqueous solution in the presence of a phase transfer catalyst to thereby subject 1,2-dichloro-1,2-difluoroethane to dehydrochlorination reaction. COPYRIGHT: (C)2015,JPO&INPIT

High-resolution FTIR study of the v2 fundamental of cis-CHF=CHF

The high-resolution FTIR spectrum at room temperature of cis-1,2-difluoroethylene has been analyzed in the v2 fundamental region from 1670 to 1760 cm-1. This vibration of A1 symmetry, corresponding to the C=C stretching, gives rise to a strong b-type band approximately centered at 1719 cm-1. The rovibrational analysis led to the assignment of many transitions in the P, Q and R branches with J′ ≤ 70, Ka′ ≤ 30, Kc′ ≤ 69. From a simultaneous fit of the ground state combination differences coming from the present work and the previously analyzed v4 and v10 fundamentals, together with a few literature microwave data, a set of ground state parameters, including all the quartic and four new sextic centrifugal distortion coefficients, was derived. Using the Watson's A-reduction Hamiltonian in the Ir representation, from the final fit of about 3600 assigned transitions, accurate rovibrational constants for the upper state were obtained with a standard deviation of about 8 × 10-4 cm-1.

The chlorination of 1,2-difluoroethane (HFC-152)

The photochlorination of CH2FCH2F yields CH2FCCl2F and CHClFCHClF, both of which were considered to be potential replacements for CFC-113 (CCl2FCF2Cl) based on their boiling points (48 deg C and 59 deg C, respectively).The CHClFCHClF/CH2FCCl2F ratio can be controlled by the choice of solvents.In aromatic solvents, the reactivity of the chlorine radical is reduced, increasing the amount of CH2FCCl2F produced.Relative rates in CCl4 and in the presence of water were compared to rates in aromatic solvents.Both CH2FCCl2F and CHClFCHClF failed in early toxicity tests and will thus not be pursued as HCFC replacements for CFC-113.