375-50-8

Basic information

• Product Name: 1,4-DIIODOOCTAFLUOROBUTANE
• Synonyms: Octafluorotetramethylene diiodide;1,4-Diiodooctafluo;1,4-Diiodoperfluorobutane 98%;1,4-Diiodooctafluorobutane, 97%, stab. with copper;1,4-Diiodoperfluorobutane, 1,4-Diiodo-1,1,2,2,3,3,4,4-octafluorobutane;1,4-Diiodooctafluorobutane, stabilized with copper;1,4-DIIODOPERFLUOROBUTANE;1,4-DIIODOOCTAFLUOROBUTANE
• CAS NO: 375-50-8
• Molecular Formula: C₄F₈I₂
• Molecular Weight: 453.84
• EINECS: 206-788-4
• Product Categories: Synthetic Organic Chemistry;Alkyl;Halogenated Hydrocarbons;Organic Building Blocks;Fluorous Chemistry;Fluorous Compounds
• Mol File: 375-50-8.mol
• Article Data: 13

Chemical Properties

• Melting Point: −9 °C(lit.)
• Boiling Point: 150 °C(lit.)
• Flash Point: 85°C/100mm
• Appearance: Clear colorless to light yellow or pink/Liquid
• Density: 2.474 g/mL at 25 °C(lit.)
• Vapor Pressure: 6.02mmHg at 25°C
• Refractive Index: n20/D 1.429(lit.)
• Storage Temp.: Refrigerator
• Solubility: Chloroform (Sparingly), Hexane (Slightly)
• Water Solubility: 9.3mg/L at 20℃
• Sensitive: Light Sensitive
• Stability: Stable, but light sensitive. Incompatible with active metals, strong oxidants.
• BRN: 1777548
• CAS DataBase Reference: 1,4-DIIODOOCTAFLUOROBUTANE(CAS DataBase Reference)
• NIST Chemistry Reference: 1,4-DIIODOOCTAFLUOROBUTANE(375-50-8)
• EPA Substance Registry System: 1,4-DIIODOOCTAFLUOROBUTANE(375-50-8)

Safety Data

• Hazard Codes: T
• Statements: 20/21/22-36/37/38
• Safety Statements: 26-36/37/39
• WGK Germany: 3
• HazardClass: TOXIC
• Hazardous Substances Data: 375-50-8(Hazardous Substances Data)

Usage

Chemical Properties

liquid

Uses

1,4-Diiodooctafluorobutane is a chain transfer agent, which is used in method for producing fluoropolymer for perfluoroelastomer.

General Description

Octafluoro-1,4-diiodobutane (ofib, C4F8I2) is also referred to as 1,1,2,2,3,3,4,4-octafluoro-1,4-diiodobutane. It acts as a halogen bond donor compound and its cocrystallization with methyldiphenylphosphine oxide (mdppo) has been investigated. In combination with a calixcrown compound ofib forms a ′binary host′ system, which is employed for the isolation of cesium iodide from aqueous to fluorous phase.

InChI:InChI=1/C4F8I2/c5-1(6,3(9,10)13)2(7,8)4(11,12)14

Upstream product

• 116-14-3 polytetrafluoroethylene 
• 354-65-4 1,2-diiodotetrafluoroethane 
• 75-38-7 Vinylidene fluoride 

Downstream Products

• 721-45-9 1,4-dimethyl-2-(4-methylbenzyl)benzene 
• 57825-37-3 1,4-Dimethyl-2-(1,1,2,2,3,3,4,4-octafluoro-butyl)-benzene 
• 2681-00-7 1,8-diiodo-3,3,4,4,5,5,6,6-octafluorooctane 
• 375-80-4 dodecafluoro-1,6-diiodohexane 
• 26206-34-8 1,4-Bis-(phenylthio)-perfluorbutan 
• 334-99-6 trifluoronitrosomethane 
• 460-49-1 trifluoromethyl isocyanate 
• 371-71-1 Perfluoro-2-azapropen 
• 710-99-6 2,4,4,5,5-pentafluoro-2-trifluoromethyl-1,3-dithiolane 
• 710-65-6 octafluoro-1,4-dithiane 
• 1240215-03-5 C₄F₈I₂*C₁₀H₁₆N₂ 
• 377-36-6 1,1,2,2,3,3,4,4-octafluorobutane 
• 685-63-2 hexafluoro-1,3-butadiene 
• 754-73-4 1-iodo-1,1,2,2,3,3,4,4-octafluorobutame 

Relevant articles and documents

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Synthesis of fluorinated telomers. Part 4. Telomerization of vinylidene fluoride with commercially available α,ω-diiodoperfluoroalkanes

The synthesis of a new fluorinated α,ω-diiodo telomer I x(VDF)y)>I (A), where TFE and VDF represent tetrafluoroethylene and vinylidene fluoride respectively, has been carried out by telomerization of VDF with α,ω-diiodoperfluoroalkanes.The thermal telomerization of VDF with 1,2-diiodoperfluoroethane IC2F4I led to good yields of the monoadduct IC2F4CH2CF2I and of the diadduct which was composed of an almost equimolar ratio of ICF2CH2C2F4CH2CF2I and IC2F4(CH2CF2)2I, together with a small amount of IC2F4CH2CF2CF2CH2I and a triadduct containing I(VDF)C2F4(VDF)2I and IC2F4(VDF)3I.This procedure has been applied successfully to α,ω-diiodo-n-perfluorobutane and α,ω-diiodo-n-perfluorohexane.The reactivity of VDF relative to the fluorinated α,ω-diiodo telogens has been studied from which it is shown that the environment of the terminal group of the telogen is a major factor affecting the reactivity. - Keywords: Telomerization; Vinylidene fluoride; Thermal initiation; Diiodoperfluoroalkane; NMR spectroscopy; Mass spectrometry

PARTIALLY FLUORINATED COMPOUNDS

Described herein is a composition comprising a partially fluorinated compound selected from the group consisting of: (a) I(CF2)XCH2CF2I; (b) ICF2CH2(CF2)XCH2CF2I; (c) I(CF2)yCH=CF2; (d) CF2=CH(CF2)yCH2CF2I; and (e) CF2=CH(CF2)yCH=CF2 wherein x is an odd integer selected from 3 to 11, and y is an integer greater than 2, along with methods of making and polymerizing such compounds.

PROCESS FOR THE PURIFICATION OF ALPHA,OMEGA-DIIODOPERFLUORINATED COMPOUNDS

The invention concerns a process for purifying α,ω-diiodoperfluorinated compounds of formula I-(CF2CF2Y)m-I comprising contacting an impure α,ω-diiodoperfluorinated compound with a suitable sequestering agent, with formation of a reversible adduct and separating the α,ω-diiodoperfluorinated compound from the adduct itself. The invention also concerns α,ω-diiodoperfluorinated compounds of formula I-(CF2CF2Y)m-I wherein m is 5 to 10 and having 100% purity grades.