Di-n-butyl sulfide

Di-n-butyl sulfide [544-40-1] M 146.3, a-form b 182", P-form 190-230"(dec). Washed with aq 5% NaOH, then water. Dried with CaCl2 and distd from sodium. 

Bond Dissociation Energy of the Radical Cation Dimers of Diethyl Sulfide, Di-n-propyl Sulfide and Di-n-butyl Sulfide. 

The reduction of sulfoxides by acetyl chloride is a general reaction and yields are generally high. However, the reduction of di-/t-butyl sulfoxide with acetyl chloride gives di-n-butyl sulfide in only 70% yield. 

Di-f-butyl nitroxide, 129,461 Di-f-butyl peroxide, 123 Di-f-butylquinones, 121 Di-n-butyl sulfide, 6 Di-n-butyl sulfoxide, 6... 

Alkyl sulfides. Di-n-butyl sulfide and dibenzyl sulfide have been oxidized to the sulfoxides by prolonged shaking of a petroleum ether solution with active MnOj. Diallyl sulfoxide was obtained by this method in 13% yield. 

Preparation. Martin1 has devised a convenient, high-yield procedure for the preparation of this reagent by dropwise addition of di-n-butyl sulfide to a flask charged with diethyl phthalate and tetracyanoethylene oxide and kept at 50°. 

The direct reaction of additive type-substances and additives with metal surfaces in various physical states has been carried out at elevated temperatures by techniques that range over a broad spectrum of elegance and sophistication. For example, Balandin, Kukina and Malakhova [9] investigated the reaction of di-n-butyl sulfide and of n-butyl mercaptan with bulk iron powder at 613-688 K (340-415 C). The volatile products were saturated hydrocarbons, unsaturated hydrocarbons and hydrogen the products on the surface of the iron were identified as FeS and FeS + x) Fukuda [10] demonstrated the following reaction... 

Figure 11-4. Load-carrying action of organosulfides in the four-ball test. "Extreme-pressure" procedure 60 seconds at 1500 rpm. Additives furnished 1.19% sulfur to the lubricant, a Base oil. 1 Di-n-butyl sulfide. 2 Diphenyl disulfide. 3 Di-n-butyl disulfide. 4 Dibenzyl sulfide. 5 Di-t-butyl disulfide. 6 Dibenzyl disulfide. 7 Diallyl disulfide. From data by E. S. Forbes [32].

Di-n-butyl sulfide n-Butyl mercaptan Butene-1 Butene-2... 

Rate constants for the reaction of OH radicals and Cl atoms with diethyl sulfide, di-w-propyl sulfide and di-n-butyl sulfide,... 

A mixture of di-n-butyl sulfide, 70%-perchloric acid, and benzyl alcohol heated 4 hrs. at 70-80 benzyldi-(n-butyl) sulfonium perchlorate. Y 83.5%.—The non-nucleophilic nature of perchlorate ion as compared to halide ion makes the process irreversible and thus avoids alkyl interchange. F. e., also with azeotropic removal of water, s. T. W. Milligan and B. G. Minor, J. Org. Ghem. 28, 235 (1963). 

From spectroscopic evidence Schleyer and West (1959) concluded that the relative electron-donor ability of the alkyl halides decreases in the order RI > RBr > RCl >RF, and that electronegativity is not a dominant factor. In their table, di-n -butyl sulfide appears to have as strong an electron-donor function as di-n-butyl ether in relation to the electron-acceptor function of methanol, and nearly as strong in relation to the electron-acceptor function of phenol. At one time, it was believed that sulfur in sulfides and mercaptans could not take part in the formation of hydrogen bonds. The example given by Zellhoefer et was diphenyl sulfide, but this is an unfortunate example to give since the electron-donating function of even diphenyl ether is weak. 

Di-n-Butyl Sulfide—A high-purity grade standan with a certified analysis, manufactuied especially as a calibration material for this test method. ... 

Di-n-butyl Sulfide (CH3CH2CH2CH2)2S or dibutyl disulfide (CH3CH2CH2CH2S)2-... 

Sulfur, Standard Stock Solution (approximately 3(X) ppm)—Weigh accurately 0.5(X)0 g of di-n-butyl sulfide into a tared 500-mL volumetric flask. Dilute to the mark with /sooctane and reweigh. 

Di-n-Butyl Sulfide (CH3CH2CH2CH2)2S) is used to prepare standards. Equivalent sulfur compound may be used if care is exercised to prevent more volatile compounds from evaporating during preparation or use of standards. 

Calculate the volume of sulfur free /.rooctane with volume of sulfur compound necessary to dissolve 0.5013 g of 98 % by weight di-n-butyl sulfide to obtain a standard containing 1000 mg/L of sulfur in a solution. a = 1000 mg/L b = 32.06... 

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