Dihexyl ether

The hollow fiber was dipped into dihexyl ether for 5 sec and excess adhering solvent was washed away by ultrasonification in a water bath. Then, 25 fiL of lOmM hydrochloric acid (aqueous, acceptor phase) was injected into the lumen of the hollow fiber with a microsyringe. This activated fiber was placed in the vial containing the donor solution and the vial vibrated at 1500 rpm for 45 min. The entire acceptor solution was flushed into a 200-fJ.L micro insert and subjected to capillary electrophoresis or HPLC detection. For 2 mL extractions, 250 //I. of plasma sample treated with... 

Cognate preparation. Dihexyl ether. Use 68 g (83 ml, 0.67 mol) of hexan-l-ol (b.p. 156-157 °C) heat until the temperature rises to 180 °C. 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 and collect the fractions of b.p. (i) 160-221 °C (23 g) and (ii) 221-223 °C (23 g). Reflux fraction (i) with 5 g of sodium and distil from the excess of sodium when a further quantity of fairly pure dihexyl ether (13g, fraction (iii)) is thus obtained. Combine fractions (ii) and (iii) and distil from a little sodium collect the pure dihexyl ether (26 g, 42%) at 221.5-223 °C. 

Digold(I) ketenide, 0571 Dihexanoyl peroxide, 3548 f Dihexyl ether, 3557... 

The operational performance of an HF-based ESTM technique was first described by Liu et al.71 A 15-cm piece of HF was filled with an acceptor buffer solution, after which the F1F was made into a loop. This loop-like F1F device was soaked in n-undecane, and then immersed in 1 L of a river or leachate water sample for extraction of freely dissolved chlorophenols. This FIF-loop device was also employed for selective ESTM sampling of freely available Cu+2 in leachate water.78 The selectivity stemmed from a selective liquid membrane (di-n-dihexyl ether) containing a carrier (crown ether/oleic acid) and a selective stripping agent in the acceptor solution. 

C12H20O2 5-methyl-2-(1 -methylvinyl)cyclohexanol aceta 57576-09-7 25.00 0.9250 1 25285 C12H260 dihexyl ether 112-58-3 -43.00 0.9801 2... 

C10H22S ethyl octyl sulfide 3698-94-0 1.634E-K10 119.980 25285 C12H260 dihexyl ether 112-58-3 1.834E-K10 133.340... 

C12H260 dihexyl ether 112-58-3 5.693 30566 C18H1504P triphenyl phosphate 115-86-6 7.103... 

In SLM extraction, the most widely applied type of three-phase membrane extraction, the membrane consists of an organic solvent, which is held by capillary forces in the pores of a hydrophobic porous membrane supporting the membrane liquid. Such membrane support can be either flat porous PTFE or polypropylene membrane sheet or porous polypropylene hollow fibers. Typical solvents are long-chain hydrocarbons like n-undecane or kerosene and more polar compounds like dihexyl ether, dioctyl phosphate, and others. Various additives can increase the efficiency of extraction considerably. The stability of the membrane depends on the solubility and volatility of the organic liquids, and it is generally possible to obtain membrane preparations that are stable up to several weeks. 

A comparison of mass spectra of dihexyl ether (molecular formula CH3(CH2)50(CH2)sCH3) obtained with low- (12 eV) and high- (70 eV) energy electron ionization beams. In these figures m/z indicates the mass to charge ratios of the measured ions, whereas the vertical axis represents their intensities relative to the base (most intensive) ion in that spectrum. From Lambert et al. (1998). 

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