445473-58-5

Basic information

• Product Name: 1-BUTYL-3-METHYLIMIDAZOLIUM OCTYLSULFATE
• Synonyms: ECOENG 418;1-BUTYL-3-METHYLIMIDAZOLIUM OCTYLSULFATE;1-Butyl-3-methylimidazolium N-octylsulfate;1-Butyl-3-methylimidazoliumoctylsulfate,98%[BMIM][OcSO4];1-BUTYL-3-METHYLIMIDAZOLIUM OCTYLSULFATE [BMLM] [OCSO4];1-n-Butyl-3-methylimidazolium n-octylsulfate, 99%;1-n-butyl-3-MethyliMidazoliuM octyl sulfate;1-Butyl-3-methylimidazolium 1-octyl sulfate
• CAS NO: 445473-58-5
• Molecular Formula: C16H32N2O4S
• Molecular Weight: 348.5
• Product Categories: Chemical Synthesis;Imidazolium;Ionic Liquids;organic amine salt
• Mol File: 445473-58-5.mol

Chemical Properties

• Melting Point: 37°C
• Appearance: beige/solid
• Density: 1.07 g/cm3
• Storage Temp.: Store below +30°C.
• Stability: hygroscopic
• CAS DataBase Reference: 1-BUTYL-3-METHYLIMIDAZOLIUM OCTYLSULFATE(CAS DataBase Reference)
• NIST Chemistry Reference: 1-BUTYL-3-METHYLIMIDAZOLIUM OCTYLSULFATE(445473-58-5)
• EPA Substance Registry System: 1-BUTYL-3-METHYLIMIDAZOLIUM OCTYLSULFATE(445473-58-5)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 36/37-26
• WGK Germany: 3
• Hazardous Substances Data: 445473-58-5(Hazardous Substances Data)

Usage

Uses

Used in Chemical Synthesis:
1-Butyl-3-methylimidazolium octylsulfate is used as a solvent for the hydroformylation of 1-octene to form nonanals in the presence of a rhodium catalyst. This application takes advantage of the ionic liquid's ability to dissolve a wide range of compounds and facilitate the reaction process.
Used in Surfactant Applications:
In industries where surfactants are required, 1-Butyl-3-methylimidazolium octylsulfate is used as a surfactant when its critical micelle concentration (CMC) is above 0.031M. Its surfactant properties make it suitable for various applications, such as in the formulation of detergents, emulsifiers, and other products that require the reduction of surface tension between two immiscible substances.
Used in Environmentally Friendly Processes:
1-Butyl-3-methylimidazolium octylsulfate is used as a halogen-free alternative in various industrial applications, reducing the environmental impact of chemical processes that traditionally involve the use of halogenated compounds. This makes it a preferred choice in industries seeking to adopt greener and more sustainable practices.

InChI:InChI=1/C8H15N2.C8H18O4S/c1-3-4-5-10-7-6-9(2)8-10;1-2-3-4-5-6-7-8-12-13(9,10)11/h6-8H,3-5H2,1-2H3;2-8H2,1H3,(H,9,10,11)/q+1;/p-1

Upstream product

• 2649-10-7 n-octyl sulfate 
• 79917-90-1 1-butyl-3-methylimidazolium chloride 
• 4316-42-1 1-Butylimidazole 
• 111-87-5 octanol 
• 77-78-1 dimethyl sulfate 
• 67633-88-9 ammonium octyl sulfate 
• 142-31-4 sodium octyl sulphate 
• 85100-77-2 1-n-butyl-3-methylimidazolim bromide 

Relevant articles and documents

Aggregation of 1-alkyl-3-methylimidazolium octylsulphate ionic liquids and their interaction with Triton X-100 micelles

Halogen-free surface active and biamphiphilic ionic liquids 1-alkyl-3-methylimidazolium octylsulphates (Cnmim C8SO4, n = 4, 6, 8, 10) were synthesized and their aqueous solution behaviour was studied using surface tension, conductance, 1H nuclear magnetic resonance (1H-NMR), and small angle neutron scattering (SANS). These catanionic type surfactants demonstrate high surface activity. SANS data revealed that C4mim C8SO4 and C6mim C8SO4 form spherical and ellipsoidal micelles in water, while those with long chain imidazolium cations (C8mim C8SO4 and C10mim C8SO4) depict limited aqueous solubility and form vesicles. The effect of addition of these ionic liquids on the phase and aggregation behaviour of non-ionic surfactant Triton X-100 (TX-100) solution was investigated using cloud point (CP), 1H-NMR, zeta potential and scattering (DLS and SANS) techniques. These Cnmim C8SO4 ionic liquids show remarkable changes in the CP of TX-100 aqueous solutions and micelle size depending on the alkyl chain of the cation and anion. The site of Cnmim C8SO4 in TX-100 micelles was investigated by NMR. The SANS data for the size/shape of aqueous TX-100 with C4mim C8SO4 and C6mim C8SO4 systems showed an ellipsoidal to smaller ellipsoidal micelle transition. Addition of C8mim C8SO4 and C10mim C8SO4 in TX-100 showed a micelle transition of ellipsoidal to smaller ellipsoidal at lower concentration and ellipsoidal to extended ellipsoidal at higher concentration, while addition of 100 mM C10mim C8SO4 in TX-100 formed vesicle structures. The obtained results are discussed in terms of the formation of charged mixed micelles of TX-100 with Cnmim C8SO4 and TX-100 micelles desirably tailored by adding appropriate concentrations of ionic liquids.

Aqueous-biamphiphilic ionic liquid systems: Self-assembly and synthesis of gold nanocrystals/microplates

Biamphiphilic ionic liquids (BAILs) based on 1,3-dialkylimidazolium cation and alkyl sulfate anions ([CnH2n+1mim][CmH 2m+1OSO3]; n = 4, 6, or 8; m = 8, 12) have been synthesized and characterized for their self-assembling behavior in the aqueous medium. Effects of alteration of alkyl chain length in cation and anion on surfactant properties of BAILs have been examined from surface tension measurements. The effectiveness of surface tension reduction for BAILs has been found to be exceptionally higher as compared to single chain surface active ILs/conventional surfactants. The thermodynamics of the aggregation process has been studied using isothermal titration calorimetry (ITC) and temperature dependent conductivity experiments. Dynamic light scattering (DLS), nuclear magnetic resonance (NMR), and transmission electron microscopy (TEM) studies showed that BAILs formed distinct aggregated structures depending upon the amphiphilic character present in the cation and anion. BAILs ([C nH2n+1mim][CmH2m+1OSO3]) form micelles when n = 4, 6; m = 8, intermicellar aggregates when n = 4, 6; m = 12, and vesicles when n = 8; m = 8, 12. Gold nanoparticles and microplates have been synthesized in micellar and vesicle solutions of BAILs using a simple photoreduction method. The studies show the potential of BAILs for constructing micelles and supramolecular assemblies, such as bilayer vesicles, which are effective in preparation of nanomaterials of controlled size and morphology.

Further investigation of the biodegradability of imidazolium ionic liquids

In continuation of our earlier investigations, this report presents a rationale behind the design of a series of imidazolium based ionic liquids and their biodegradation using the CO2 headspace test (ISO 14593 method, OECD 310). The effect on biodegradability of these salts through variation of the N-substituted side chains of imidazolium ions was examined further through incorporation of various functional groups and increased alkyl chain lengths. A series of anions containing moieties known to be biodegradable were also incorporated into a number of imidazolium based salts and examined in a similar fashion.

METHOD FOR PRODUCING ONIUM ALKYL SULFATES WITH A LOW HALOGENIDE CONTENT

The invention relates to a method for producing onium alkyl sulfates by reacting an onium halogenide with a symmetrically substituted dialkyl sulfate, the alkyl group thereof containing between 1 and 14 C atoms, with an unsymmetrically substituted dialkyl sulfate, one alkyl group containing between 4 and 20 C atoms, and the second alkyl group being methyl or ethyl, with an alkyl-trialkylsilyl sulfate, with an alkylacyl sulfate, or with an alkylsulfonyl sulfate, the reaction with the dialkyl sulphate taking place at room temperature.

METHOD FOR THE PRODUCTION OF IONIC LIQUIDS CONTAINING ALKYL SULPHATE AND FUNCTIONALISED ALKYL SULPHATE-ANIONS

The invention relates to a method for the production of ionic liquids of general formula [cation][R' -0--S03].