57702-65-5

Basic information

• Product Name: N-OCTYLTRIBUTYLPHOSPHONIUM BROMIDE
• Synonyms: N-OCTYLTRIBUTYLPHOSPHONIUM BROMIDE;TRIBUTYL-N-OCTYLPHOSPHONIUM BROMIDE;TRIBUTYL(OCTYL)PHOSPHONIUM BROMIDE;HISHICOLIN PX-48B;n-Octyltri-n-butylphosphonium Bromide;P8,4,4,4Br;Tributyl-n-octylphosphonium Bromide
• CAS NO: 57702-65-5
• Molecular Formula: C20H44BrP
• Molecular Weight: 395.44
• Product Categories: Phosphonium Salts;Phosphonium Compounds
• Mol File: 57702-65-5.mol
• Article Data: 6

Chemical Properties

• Melting Point: 25 °C
• Appearance: /
• CAS DataBase Reference: N-OCTYLTRIBUTYLPHOSPHONIUM BROMIDE(CAS DataBase Reference)
• NIST Chemistry Reference: N-OCTYLTRIBUTYLPHOSPHONIUM BROMIDE(57702-65-5)
• EPA Substance Registry System: N-OCTYLTRIBUTYLPHOSPHONIUM BROMIDE(57702-65-5)

Safety Data

• Statements: 36/37/38
• Safety Statements: 26-36
• Hazardous Substances Data: 57702-65-5(Hazardous Substances Data)

Usage

General Description

N-octyltributylphosphonium bromide, also known as 8-8-8-Br, is a quaternary ammonium compound commonly used as an ionic liquid with a wide range of applications. It is a chemical compound with the formula [(C8H17)3P+(CH2)4CH3]+Br?. It has been widely used as a solvent, catalyst, and extraction agent in various chemical processes. It is also known for its antimicrobial properties and has been used in biocides and disinfectants. Additionally, it has been studied for its potential use in fuel cells and as an alternative to traditional organic solvents due to its low volatility and thermal stability.

InChI:InChI=1/C20H44P.BrH/c1-5-9-13-14-15-16-20-21(17-10-6-2,18-11-7-3)19-12-8-4;/h5-20H2,1-4H3;1H/q+1;/p-1

Upstream product

• 111-83-1 1-bromo-octane 
• 998-40-3 tributylphosphine 

Relevant articles and documents

Versatile 4, 6-dimethyl-2-mercaptopyrimidine based ionic liquids as high-performance corrosion inhibitors and lubricants

Ionic liquids (ILs) are extensively used in many fields owing to their attractive characteristics. Good structure designability provides ILs an opportunity to integrate multiple functions into their structures, which could promote their industrial applications as versatile materials. In this study, three 4, 6-dimethyl-2-mercaptopyrimidine (DMMP) based phosphonium ILs were firstly synthesized. The corrosion inhibition behaviors of these ILs for mild steel in 0.5 M H2SO4 aqueous solutions were investigated by electrochemical tests. Results indicated that all of the three ILs exhibited surprising inhibition efficiencies as high as 99%, even at an ultralow concentration of 0.1 mM. The ILs' adsorption behavior on surface obeys Langmuir isotherm, indicating that the ILs inhibit corrosion of mild steel by monolayer adsorption on the mild steel surface. Moreover, due to the superior adsorption capacity on steel surface, DMMP based ILs are expected have great application potentials as high-performance lubricating materials. As expected, DMMP based ILs showed excellent lubrication performances both at 30 °C and 100 °C as compared to PAO and 1-butyl-3-methylimidazolium tetrafluoroborate (LB104). Surface analyses indicated that tribofilms consist of ILs adsorption layer and tribochemical products, such as FeS, Fe2O3 and organic compounds containing C[sbnd]O bonds, are responsible for the predominant lubrication performances. Therefore, versatile ILs designed in this paper have gathered two significant abilities for industrial applications, which are high corrosion inhibiting properties and excellent lubrication performances. This work is believed to be instructive for designing multifunctional ILs and promoting the ILs' application in industry in the future.

SO2 capture by ionic liquid and spectroscopic speciation of sulfur(IV) therein

The absorption of equimolar sulfur dioxide (SO2) by tributyloctylphosphonium bicarbonate ([P4448]HCO3) resulted in the formation of a corresponding bisulfite ionic liquid ([P4448][bisulfite]) accompanied by carbon dioxide (CO2) release. The liquid formed absorbed an additional 0.6 equivalents of SO2. The speciation of sulfur(iv) in the SO2-loaded ionic liquid was performed using Raman and NMR spectroscopies. The two known isomeric forms of bisulfite ion in aqueous systems were identified while the condensation of bisulfite anion was suppressed in [P4448][bisulfite]. The isomer with the proton bonded to the sulfur atom (HSO3-) was more abundant than the one with the proton bonded to the oxygen atom (HOSO2-). The isomeric exchange rate was much slower in the IL than in water as distinguished by 1H NMR. When excess SO2 was absorbed by [P4448][bisulfite], the presence of molecular SO2 and HS2O5- were suggested by Raman bands as an indication of concerted physisorption and chemisorption.

METHOD FOR PRODUCING IONIC LIQUID AND METHOD FOR PRODUCING INTERMEDIATE BODY FOR PRODUCTION OF IONIC LIQUID

PROBLEM TO BE SOLVED: To provide a method for producing an ionic liquid for synthesizing a desired ionic liquid with high purity, and to provide a method for producing an intermediate body for synthesizing the ionic liquid. SOLUTION: A method for producing an ionic liquid which produces a desired ionic liquid Q+Z- formed from cation Q+ and anion Z- includes: a step of purifying a high-melting point intermediate body Q+Y- that is formed from the cation Q+ and the anion Z- and has such a melting point as to be recrystallized, by recrystallization; and a step of obtaining the ionic liquid Q+Z- directly or indirectly from the purified high-melting point intermediate body Q+Y-. A method for producing a strongly acidic intermediate body and a super-hydrophilic intermediate body includes: a step of obtaining a strongly acidic intermediate body or a super-hydrophilic intermediate body from the purified high-melting point intermediate body Q+Y- by a double decomposition precipitation method or obtaining the strongly acidic intermediate body from the purified high-melting point intermediate body Q+Y- by a double decomposition precipitation method, or a step of obtaining the super-hydrophilic intermediate body from the strongly acidic intermediate body by a neutralization method. SELECTED DRAWING: Figure 1 COPYRIGHT: (C)2018,JPOandINPIT