628-55-7

Basic information

• Product Name: DIISOBUTYL ETHER
• Synonyms: 1,1’-oxybis(2-methyl)-propan;1,1’-oxybis(2-methylpropane);1,1’-oxybis[2-methyl-propan;1,1’-oxybis[2-methylpropane];1-Isobutoxy-2-methylpropane;1-Isobutoxy-2-methyl-propane;Bis(2-methylpropyl)ether;Propane, 1,1'-oxybis*2-methyl-
• CAS NO: 628-55-7
• Molecular Formula: C₈H₁₈O
• Molecular Weight: 130.23
• EINECS: 211-045-2
• Mol File: 628-55-7.mol
• Article Data: 13

Chemical Properties

• Melting Point: -100°C
• Boiling Point: 122°C
• Flash Point: 8°C
• Appearance: /
• Density: 0,75 g/cm3
• Refractive Index: 1.3890-1.3910
• Water Solubility: 137.9g/L(25 oC)
• Stability: Flammable. Incompatible with strong oxidizing agents.
• Merck: 14,5142
• CAS DataBase Reference: DIISOBUTYL ETHER(CAS DataBase Reference)
• NIST Chemistry Reference: DIISOBUTYL ETHER(628-55-7)
• EPA Substance Registry System: DIISOBUTYL ETHER(628-55-7)

Safety Data

• Statements: 11
• Safety Statements: 9-16-33
• RIDADR: 3271
• RTECS: NQ1000000
• HazardClass: 3.1
• PackingGroup: III
• Hazardous Substances Data: 628-55-7(Hazardous Substances Data)

Usage

General Description

Diisobutyl Ether is a colorless liquid with a mild, pleasant odor commonly used as a solvent in production of resins, varnishes, and nitrocellulose. It is also used as an extraction medium in the pharmaceuticals industry, and as a reaction medium. It has a molecular formula of C8H18O and is also known by the name Isobutyl Ether. DIISOBUTYL ETHER can form an explosive peroxide in air and has a flash point of -7°C. Its inhalation or skin contact can cause irritation or burns. It's classified as a flammable liquid and should be stored in a well-ventilated, cool place, away from heat sources or sparks.

Upstream product

• 78-83-1 2-methyl-propan-1-ol 
• 78-84-2 isobutyraldehyde 
• 67-56-1 methanol 
• 683-60-3 sodium isopropylate 
• 74-88-4 methyl iodide 
• 3453-79-0 aluminum sec-butoxide 
• 7664-93-9 sulfuric acid 
• 513-38-2 Isobutyl iodide 
• 7758-99-8 copper(II) sulfate 
• 617-86-7 triethylsilane 
• 628-56-8 isopropenylmethyl ether 

Downstream Products

• 110-96-3 diisobutylamine 
• 1116-40-1 triisobutylamine 
• 78-81-9 isobutylamine 
• 115-11-7 isobutene 
• 99177-32-9 i-C₄H₉OBClC₆H₅ 
• 513-36-0 isobutyryl chloride 
• 23705-38-6 N-(3-methylbut-2-yl)-4-methylbenzenesulfonamide 
• 1643393-47-8 1-(3-isobutyloxy-2-methylpropyl)-4-methylbenzene 
• 78-83-1 2-methyl-propan-1-ol 
• 507-19-7 t-butyl bromide 
• 78-77-3 Isobutyl bromide 

Relevant articles and documents

Characterization by NMR of reactants and products of hydrofluoroether isomers, CF3(CF2)3OCH3 and (CF 3)2C(F)CF2OCH3, reacting with isopropyl alcohol

The 3M Company product Novec 71IPA DL, a mixture of methoxyperfluorobutane, methoxyperfluoroisobutane and 4.5 wt.% isopropyl alcohol, has been found to be very stable at ambient temperature, producing fluoride at the rate of ～1 ppm/year. Our earlier kinetic and theoretical studies have identified the reaction mechanism. This paper identifies the 1H and 19F NMR chemical shifts, multiplicities, and coupling constants of reactants and the major products that result from aging the mixture in sealed Pyrex NMR tubes for periods up to 1.8 years at temperatures from 26 °C to 102 °C. Chemical shifts and coupling constants of fluorine and hydrogen atoms on the hydrofluoroethers and isopropyl alcohol are traced through the reactions to their values in the products - esters, isopropylmethyl ether, and HF. These spectral positions, multiplicities, and coupling constants are presented in table format and as figures to clarify the transformations observed as the samples age. Copyright 2013 John Wiley & Sons, Ltd. The titled hydrofluoroether isomers react slowly with isopropyl alcohol in a two-step process yielding isopropylmethyl ether, the corresponding isopropyl ester isomers, and HF. 19F and 1H NMR chemical shifts, multiplicities, and coupling constants are assigned to the reactants and major products in this paper. Copyright

Antimony(v) cations for the selective catalytic transformation of aldehydes into symmetric ethers, α,β-unsaturated aldehydes, and 1,3,5-trioxanes

1-Diphenylphosphinonaphthyl-8-triphenylstibonium triflate ([2][OTf]) was prepared in excellent yield by treating 1-lithio-8-diphenylphosphinonaphthalene with dibromotriphenylstiborane followed by halide abstraction with AgOTf. This antimony(v) cation was found to be stable toward oxygen and water, and exhibited exceptional Lewis acidity. The Lewis acidity of [2][OTf] was exploited in the catalytic reductive coupling of a variety of aldehydes into symmetric ethers of type L in good to excellent yields under mild conditions using Et3SiH as the reductant. Additionally, [2][OTf] was found to selectively catalyze the Aldol condensation reaction to afford α-β unsaturated aldehydes (M) when aldehydes with 2 α-hydrogen atoms were used. Finally, [2][OTf] catalyzed the cyclotrimerization of aliphatic and aromatic aldehydes to afford the industrially-useful 1,3,5 trioxanes (N) in good yields, and with great selectivity. This phosphine-stibonium motif represents one of the first catalytic systems of its kind that is able to catalyze these reactions with aldehydes in a controlled, efficient manner. The mechanism of these processes has been explored both experimentally and theoretically. In all cases the Lewis acidic nature of the antimony(v) cation was found to promote these reactions.

Process for making dibutyl ethers from aqueous isobutanol

The present invention relates to a catalytic process for making dibutyl ethers using a reactant comprising isobutanol and water. The dibutyl ethers so produced are useful in transportation fuels.