2418-22-6

Basic information

• Product Name: 2,3-Dichlorohexafluorobut-2-ene (E/Z isomer mixture)
• Synonyms: 2,3-Dichlorohexafluorobut-2-ene (E/Z isomer mixture);(Z)-2,3-Dichloro-1,1,1,4,4,4-hexafluoro-2-butene;(Z)-2,3-Dichlorohexafluoro-2-butene
• CAS NO: 2418-22-6
• Molecular Formula: C₄Cl₂F₆
• Molecular Weight: 232.94
• Mol File: 2418-22-6.mol
• Article Data: 4

Chemical Properties

• Boiling Point: 67.98°C (estimate)
• Flash Point: 3.2°C
• Appearance: /
• Density: 1.6250 (estimate)
• Refractive Index: 1.3510 (estimate)
• CAS DataBase Reference: 2,3-Dichlorohexafluorobut-2-ene (E/Z isomer mixture)(CAS DataBase Reference)
• NIST Chemistry Reference: 2,3-Dichlorohexafluorobut-2-ene (E/Z isomer mixture)(2418-22-6)
• EPA Substance Registry System: 2,3-Dichlorohexafluorobut-2-ene (E/Z isomer mixture)(2418-22-6)

Safety Data

• Hazardous Substances Data: 2418-22-6(Hazardous Substances Data)

Usage

Physical state

Colorless liquid

Isomeric forms

E and Z

Uses

Production of fluoropolymers, building block for creating unique organic molecules

Hazards

Causes irritation to skin, eyes, and respiratory system; potential harmful effects on the environment

Handling precautions

Handle with care and dispose of properly according to local regulations.

Upstream product

• 7736-43-8 trans-2-chloro-1,1,1,4,4,4-hexafluorobutene-2 
• 87-68-3 Hexachlorobutadiene 
• 354-58-5 1,1,1-Trichloro-2,2,2-trifluoroethane 
• 303-04-8 2,3-dichloro-1,1,1,4,4,4-hexafluoro-2-butene 

Downstream Products

• 692-50-2 hexafluoro-2-butyne 

Relevant articles and documents

Preparation method of Z-1,1,1,4,4,4-hexafluoro-2-butene

The invention relates to a preparation method of Z-1,1,1,4,4,4-hexafluoro-2-butene, belonging to the field of chemical synthesis. The method comprises the following steps of taking hexachlorobutadiene (HCBD) as a raw material, performing gas-phase catalytic chlorination-fluoridation separation to obtain 2,3-dichlorohexafluoro-2-butene, performing liquid-phase dechlorination to obtain hexafluoro-2-butyne, and preparing the Z-1,1,1,4,4,4-hexafluoro-2-butene (Z-HFO-1336mzz) by means of performing gas-phase catalytic hydrogenation, wherein three reactions are included totally. The Z-1,1,1,4,4,4-hexafluoro-2-butene with high selectivity is obtained by means of performing catalytic hydrogenation by adopting the hexafluoro-2-butyne, and meanwhile the product is easily separated from side products and the raw material. The method disclosed by the invention has the advantages that the original raw material is easily obtained, the activity of a catalyst is high, the service life of the catalyst is long, the raw material can be recycled, and the standard of zero emissions is reached.

Catalytic synthesis of polyfluoroolefins

A catalytic synthesis of polyfluoroolefins was developed proceeding from polyfluorochlorocarbons with the use of industrially produced nickel-chromium catalyst. Three ways of the catalytic synthesis of fluoroolefins were implemented: the cleavage of vicinal chlorine atoms from polyfluorochlorocarbons, the replacement of vinyl chlorine atoms by hydrogen in fluorochloroolrfins, and the reductive dimerization of polyfluorochlorocarbons containing a trichloromethyl group. The condition of a prolonged operation of the nickel-chromium catalyst was found consisting in the application of quartz for absorption of the hydrogen fluoride formed as a side product.