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

Description

1,4-Diiodooctafluorobutane, also known as Octafluoro-1,4-diiodobutane (OFIB, C4F8I2), is a halogen bond donor compound with the chemical formula C4F8I2. It is a liquid at room temperature and has been investigated for its cocrystallization properties with other compounds, such as methyldiphenylphosphine oxide (MDPPO). When combined with a calixcrown compound, it forms a "binary host" system used for the isolation of cesium iodide from aqueous to fluorous phase.

Uses

1. Used in Polymer Production:
1,4-Diiodooctafluorobutane is used as a chain transfer agent in the method for producing fluoropolymers, specifically perfluoroelastomers. Its role in the production process helps to control the molecular weight and architecture of the resulting polymers, which are essential for their performance characteristics in various applications.
2. Used in Nuclear Industry:
In the nuclear industry, 1,4-Diiodooctafluorobutane is utilized as a component in the formation of a "binary host" system when combined with a calixcrown compound. This system is employed for the isolation of cesium iodide from aqueous to fluorous phase, which is crucial for nuclear waste management and the safe handling of radioactive materials.
3. Used in Chemical Research:
Due to its unique chemical properties as a halogen bond donor, 1,4-Diiodooctafluorobutane is also used in chemical research to study cocrystallization with other compounds, such as MDPPO. This research can lead to a better understanding of the compound's properties and potential applications in various fields.

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 
• 375-80-4 dodecafluoro-1,6-diiodohexane 
• 334-99-6 trifluoronitrosomethane 
• 460-49-1 trifluoromethyl isocyanate 
• 371-71-1 Perfluoro-2-azapropen 
• 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 
• 680-54-6 4-H-heptafluoro-1-butene 
• 760-42-9 1,1,1,2,4,4,4-heptafluoro-2-butene 

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.