685-63-2

Basic information

• Product Name: HEXAFLUORO-1,3-BUTADIENE
• Synonyms: HEXAFLUOROBUTA-1,3-DIENE;HEXAFLUOROBUTADIENE-1,3;HEXAFLUORBUTADIENE-1,3;HEXAFLUORO-1,3-BUTADIENE;1,1,2,3,4,4-Hexafluoro-1,3-butadiene;1,1,2,3,4,4-hexafluoro-3-butadiene;1,1,2,3,4,4-hexafluoro-buta-1,3-diene;1,1,2,3,4,4-hexafluorobuta-1,3-diene
• CAS NO: 685-63-2
• Molecular Formula: C₄F₆
• Molecular Weight: 162.03
• EINECS: 211-681-0
• Mol File: 685-63-2.mol
• Article Data: 47

Chemical Properties

• Melting Point: -132°C
• Boiling Point: 6-7°C
• Appearance: Colorless, odorless liquefied gas
• Density: 1.553
• Vapor Pressure: 954mmHg at 25°C
• Refractive Index: 1.378
• Water Solubility: 230.5mg/L at 20℃
• CAS DataBase Reference: HEXAFLUORO-1,3-BUTADIENE(CAS DataBase Reference)
• NIST Chemistry Reference: HEXAFLUORO-1,3-BUTADIENE(685-63-2)
• EPA Substance Registry System: HEXAFLUORO-1,3-BUTADIENE(685-63-2)

Safety Data

• Hazard Codes: F
• Statements: 11
• Safety Statements: 16-23-33
• RIDADR: 3161
• Hazardous Substances Data: 685-63-2(Hazardous Substances Data)

Usage

Flammability and Explosibility

Flammable

InChI:InChI=1/C4F6/c5-1(3(7)8)2(6)4(9)10

Upstream product

• 375-42-8 1,4-dibromo-2,3-dichloro-1,1,2,3,4,4-hexafluorobutane 
• 384-49-6 3H-hexafluoro-4-iodo-but-1-ene 
• 376-42-1 3,4-dichloro-hexafluoro-adipic acid 
• 375-45-1 perfluoro-1,2,3,4-tetrachlorobutane 
• 375-27-9 1,2-dibromo-3,4-dichloro-1,1,2,3,4,4-hexafluoro-butane 
• 336-08-3 perfluoroadipic acid 
• 359-37-5 Iodotrifluoroethylene 
• 355-75-9 decafluorocyclohex-1-ene 
• 102682-87-1 trifluorovinyl copper 
• 598-73-2 1-bromo-1,2,2-trifluoroethene 
• 105417-08-1 trifluoroethenylzinc bromide 
• 359-11-5 1,1,2-trifluoroethylene 
• 678-13-7 1,2-dichloro-1,1,2,3,3,4,4-heptafluoro-4-iodo-butane 
• 375-50-8 1,1,2,2,3,3,4,4-octafluoro-1,4-diiodobutane 

Downstream Products

• 375-24-6 1,2,3,4-tetrabromo-hexafluoro-butane 
• 360-87-2 1,4-dibromohexafluoro-2-butene 
• 697-11-0 hexafluorocyclobut-1-ene 
• 32741-39-2 1,8-Diphenyl-1,3,5,7-perfluoroctatetraen 
• 64325-21-9 1,8-Bis(p-dimethylaminophenyl)-1,3,5,7-perfluoroctatetraen 
• 694-17-7 Tetrafluorooxirane 
• 353-50-4 Carbonyl fluoride 
• 354-34-7 trifluoroacetyl fluoride 
• 380-40-5 hexafluoro-2,5-dihydrothiophene 
• 2377-85-7 1,2,3,3,4,4,5,6,7,7,8,8-dodecafluorotricyclo[3.3.0.0^2,6]octane 
• 1542-14-9 3,3,4,5,6,6-hexafluoro-3,6-dihydro-1,2-dithiin 
• 357-26-6 octafluoro-1-butene 
• 760-42-9 1,1,1,2,4,4,4-heptafluoro-2-butene 
• 692-50-2 hexafluoro-2-butyne 

Relevant articles and documents

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Preparation method of hexafluorobutadiene

The invention relates to a preparation method of hexafluorobutadiene, and belongs to the technical field of fluorine-containing gas preparation. The preparation method comprises the following steps: preparing a polar base solution, activated zinc and 1,2-dichloro2iodo-1,1,2-trifluoroethane, further preparing 1,2,3,4-tetrachlorohexafluorobutane, and finally preparing hexafluorobutadiene. Accordingto the method, activated zinc is used in the preparation process and is matched with a polar base solution serving as a solvent, so that the reaction rate is increased, the yield and selectivity of 1,2,3,4-tetrachlorohexafluorobutane are guaranteed; therefore, the problem that the reaction rate is influenced by using zinc particles which are not activated and have larger particles and adopting a solvent with poorer polarity in the prior art is solved; in addition, a non-polar solvent and activated zinc are added in the preparation of hexafluorobutadiene, so that byproducts generated in the preparation process of hexafluorobutadiene are easier to separate while the yield and selectivity of hexafluorobutadiene are ensured.

PRODUCTION METHOD FOR HEXAFLUORO-1,3-BUTADIENE

Provided is a method that is for producing hexafluoro-1,3-butadiene, discharges small amounts of industrial wastes, and is industrially applicable. The method for producing hexafluoro-1,3-butadiene includes a reaction step of reacting a halogenated butane represented by chemical formula, CF2X1-CFX2-CFX3-CF2X4 (X1, X2, X3, and X4 are each independently a halogen atom other than a fluorine atom) in an organic solvent in the presence of zinc to eliminate the halogen atoms, X1, X2, X3, and X4, other than the fluorine atoms to generate hexafluoro-1,3-butadiene, giving a reaction product containing the hexafluoro-1,3-butadiene, and an aftertreatment step of separating the hexafluoro-1,3-butadiene from the reaction product produced in the reaction step, then adding water to a reaction product residue after the separating, and removing the organic solvent, giving an aqueous solution of zinc halide.