760-42-9

Basic information

• Product Name: 1,1,1,2,4,4,4-HEPTAFLUORO-2-BUTENE
• Synonyms: 1,1,1,2,4,4,4-HEPTAFLUORO-2-BUTENE;1,1,1,2,4,4,4-HEPTAFLUOROBUT-2-ENE;1,1,1,2,4,4,4-Heptafluorobut-2-ene 97%;1,1,1,2,4,4,4-Heptafluorobut-2-ene97%;3H-Heptafluorobut-2-ene 97%;3H-Heptafluorobut-2-ene97%
• CAS NO: 760-42-9
• Molecular Formula: C₄HF₇
• Molecular Weight: 182.04
• Mol File: 760-42-9.mol
• Article Data: 4

Chemical Properties

• Boiling Point: 8°C
• Appearance: /
• Density: 1.442 g/cm³
• Vapor Pressure: 1290mmHg at 25°C
• Refractive Index: 1.272
• CAS DataBase Reference: 1,1,1,2,4,4,4-HEPTAFLUORO-2-BUTENE(CAS DataBase Reference)
• NIST Chemistry Reference: 1,1,1,2,4,4,4-HEPTAFLUORO-2-BUTENE(760-42-9)
• EPA Substance Registry System: 1,1,1,2,4,4,4-HEPTAFLUORO-2-BUTENE(760-42-9)

Safety Data

• Hazard Codes: Xi
• Safety Statements: 23-38
• RIDADR: 3163
• HazardClass: GAS
• Hazardous Substances Data: 760-42-9(Hazardous Substances Data)

Usage

General Description

1,1,1,2,4,4,4-Heptafluoro-2-butene is a colorless, non-toxic and non-flammable chemical compound. It is commonly used as a refrigerant and in the production of fluoropolymer resins. 1,1,1,2,4,4,4-HEPTAFLUORO-2-BUTENE has a high global warming potential and is considered to be a greenhouse gas, contributing to climate change. Additionally, it is an ozone-depleting substance, with the potential to harm the atmosphere. Due to its environmental impact, efforts are being made to find alternative compounds and technologies to replace 1,1,1,2,4,4,4-heptafluoro-2-butene in various applications.

InChI:InChI=1/C4HF7/c5-2(4(9,10)11)1-3(6,7)8/h1H/b2-1-

Upstream product

• 355-18-0 2,2-dichloro-1,1,1,3,3,4,4,4-octafluoro-butane 
• 434-41-3 2-chloro-heptafluoro-2-butene 
• 335-48-8 1,4-dibromo-1,1,2,2,3,3,4,4-octafluoro-butane 
• 375-50-8 1,1,2,2,3,3,4,4-octafluoro-1,4-diiodobutane 
• 678-13-7 1,2-dichloro-1,1,2,3,3,4,4-heptafluoro-4-iodo-butane 
• 685-63-2 hexafluoro-1,3-butadiene 
• 87-68-3 Hexachlorobutadiene 

Downstream Products

• 86884-16-4 1,1,1,2,4,4,4-heptafluorobutane 

Relevant articles and documents

PRODUCTION METHOD OF PERFLUOROALKADIENE COMPOUND

PROBLEM TO BE SOLVED: To provide a method capable of obtaining a perfluoroalkandiene compound in a high yield while reducing the generation amount of impurities which are difficult to separate. SOLUTION: The production method is a method for producing a perfluoroalkandiene compound represented by the general formula (1): CF2=CF-(CF2)n-4-CF=CF2 (1) [in the formula, n represents an integer of 4 to 20.] and comprises a reaction step of reacting a compound represented by the general formula (2): CF2X1-CFX2-(CF2)n-4-CF2-CF2X3 (2) [in the formula, n is the same as defined above; X1, X2 and X3 are the same or different, X1 and X2 represent a halogen atom, and X3 represents a chlorine atom, a bromine atom or an iodine atom, provided that both X1 and X2 are not fluorine atoms] in the presence of a nitrogen-containing compound and zinc or a zinc alloy in an organic solvent in which the reaction step includes a mixing step of sequentially mixing a solution including zinc or a zinc alloy and an organic solvent, a nitrogen-containing compound and the compound represented by the general formula (2). SELECTED DRAWING: None COPYRIGHT: (C)2021,JPOandINPIT

Preparation method of 1,1,1,2,4,4,4-heptafluoro-2-butene

The invention discloses a preparation method of 1,1,1,2,4,4,4-heptafluoro-2-butene. The method uses hexachlorobutadiene and hydrogen fluoride as raw materials and uses a chromium-based catalyst as a fluorine-chlorine exchange catalyst to form the 1,1,1,2,4,4,4-heptafluoro-2-butene under gas phase conditions through a plurality of gas-phase catalytic reactions. Compared with the prior art, the preparation method of the 1,1,1,2,4,4,4-heptafluoro-2-butene provided by the invention has the following advantages: 1, the gas phase fluorination method adopted in the method is a cycle fluorination method, has less three industrial wastes (waste water, waste gases and solid waste), and greatly reduces the production costs; 2, the method can realize rapid and multiple-cycle fluorination, improve a product yield, and have simple separation and purification of the product; and 3, the method has the advantages of cheap raw materials, convenient sources and simple operation, and is suitable for industrialized production.