Hexyl Ether

It is used as a solvent medium in chemical reactians and is a foam breaker far certain pro- 

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Di-n-hexyl ether. Use 50 g. (61 ml.) of n-hexyl alcohol (b.p. 156-157°) and 6 g. (3-5 ml.) of concentrated sulphuric acid, and heat until the temperature rises to 180°. Pour the reaction mixture into water, separate the upper layer, wash it twice with 5 per cent, sodium hydroxide solution, then with water, and dry over anhydrous potassium carbonate. Distil from a 50 ml. Claisen flask, and collect the fractions of b.p. (i) 160-221° (17 g.), and (u) 221-223° (17 g.). Reflux fraction (i) with 4 g. of sodium and distil from the excess of sodium 9 - 5 g. of fairly prure n-hexyl ether, fraction (iii), are thus obtained. Combine fractions (ii) and (iii) and distil from a little sodium collect the pure n-hexyl ether (19 g.) at 221 - 5-223°. 

Like //-butyUithium, j iZ-butyUithium is infinitely soluble in most hydrocarbons, such as pentane and hexane. Its solutions in hexane are flammable and pyrophoric and therefore should be handled like //-butyUithium (96,100). j iZ-ButyUithium also is very soluble in ethers, but the ether solutions must be kept cold because ether cleavage is more rapid than in the presence of //—butyUithium (122). j iZ-ButyUithium has a t 2 of 2 d at 25°C in di-//-butyl ether and of 1 d at 25°C in di-//-hexyl ether. 

FIG. 1 Kinetics of the hydrolysis of sodium hexyl sulfate and several alcohol ether sulfates. 1, Sodium hexyl ether (1 PrO) sulfate, K = 0.0075 min1 2, sodium octyl ether (1 PrO) sulfate, AT, - 0.0071 min 1 3, sodium octyl ether (1 EO) sulfate, AT, = 0.0051 min1 and 4, sodium hexyl sulfate, AT, = 0.0037 min1. 

The liquid-phase dehydration of 1-hexanol and 1-pentanol to di-n-hexyl ether (DNHE) and di-n-pentyl ether (DNPE), respectively, has been studied over H-ZSM-5, H-Beta, H-Y, and other zeolites at 160-200°C and 2.1 MPa. Among zeolites with a similar acid sites concentration, large pore H-Beta and H-Y show higher activity and selectivity to ethers than those with medium pores, although activity of H-ZSM-5 (particularly in 1-pentanol) is also noticeable. Increased Si/Al ratio in H-Y zeolites results in lower conversion of pentanol due to reduced acid site number and in enhanced selectivity to ether. Selectivity to DNPE is always higher than to DNHE... 

CYCLOPENTYLHEPTANE 1-CYCLOHEXYLHEXANE 1-OODECANAL n-DODECANOIC ACID n-DOOECANE DI-n-HEXYL ETHER 1-DOOECANOL... 

Liquid membrane enrichment coupled on-line with ion chromatography. Low molecular mass carboxylic acids in low concentrations in air or soil samples can be determined by ion chromatography coupled on-line to a selective enrichment system consisting of a supported liquid membrane, impregnated with tri- -octylphosphine oxide in di-n-hexyl ether [97-98]. The system allows the determination of these carboxylic acids at micromolar levels in the presence of interfering ions such as nitrite, chloride, sulfate, iron, and aluminum. 

The thermal process has been conducted in hot kerosene/ in w-hexadecane/ in o-dichlorobenzene, in di-n-hexyl ether, and in chlorobenzene. Tetrachlorothiophene has been recommended for similar processes. A low concentration is advantages (<1% was recommended in work that showed kerosene to be the optimal solvent. ) As high a temperature as possible has been recommended. - The process has been conducted with alkyl, nitro, ° bromo, - ° methoxyl, hydroxyl, and even (additional) azido groups... 

UDMH is known to be miscible with the following wafer, benzene, triethyl benzene, toluene, kerosene, ethyl alcohol, isobutyl alcohol, n-butyl ether, n-amyl ether, n-hexyl ether, diethyl ether, petroleum ether, petroleum naphtha, n-heptane, n-hexane, n-octane, n-decane, n-dodecane, n-hexadecane, cyclohexane, 1,2-dimethyl cyclohexane, phenyl cyclohexane, n-tetradecane, trichloroethylene, dichloroethylene, perchloroethylene, 1,1,1-trichloroethane, triethyl amine, ethylenediamine, diethylene triamine, acetonitrile, aniline, cumene, tetra-hydronaphthalene, tetraethylene pentamine, ethylene glycol and hydrazine (Ref 4)... 

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