Hexadecyl-methyl

C17H36S HEXADECYL-METHYL-SULFIDE 5.848E-04 798.63 -0.7143 294.16 758.70 8.166E-04 0.844... 

Vinyl Ethers. The principal commercial vinyl ethers are methyl vinyl ether (methoxyethene, C H O) [107-25-5], ethyl vinyl ether (ethoxyethene, C HgO) [104-92-2], and butyl vinyl ether (1-ethenyloxybutane, C H 20) [111-34-2]. (See Table 8 for physical properties.) Others such as the isopropyl, isobutyl, hydroxybutyl, decyl, hexadecyl, and octadecyl ethers, as well as the divinyl ethers of butanediol and of triethylene glycol, have been offered as development chemicals (see Ethers). 

Mechanical and Thermal Properties. The first member of the acrylate series, poly(methyl acrylate), has fltde or no tack at room temperature it is a tough, mbbery, and moderately hard polymer. Poly(ethyl acrylate) is more mbberflke, considerably softer, and more extensible. Poly(butyl acrylate) is softer stiU, and much tackier. This information is quantitatively summarized in Table 2 (41). In the alkyl acrylate series, the softness increases through n-octy acrylate. As the chain length is increased beyond n-octy side-chain crystallization occurs and the materials become brittle (42) poly( -hexadecyl acrylate) is hard and waxlike at room temperature but is soft and tacky above its softening point. 

All these results are consistent with the hypothesis that aryl cations react in aqueous media at diffusion-controlled rates with all nucleophiles that are available in the immediate neighbourhood of the diazonium ion. On this basis Romsted and coworkers (Chaudhuri et al., 1993a, 1993b) used dediazoniation reactions as probes of the interfacial composition of association colloids. These authors determined product yields from dediazoniation of two arenediazonium tetrafluoroborates containing ft-hexadecyl residues (8.15 and 8.16) and the corresponding diazonium salts with methyl groups instead of Ci6H33 chains. ... 

Mg (3-methacryloxy)propyl, methyl, phenyl, 3-aminopropyl, 3-mercaptopropyl, [n-(2-aminoethyl)-3-aminopropyl], [(10-amino)-4,7-diazanonyl], hexadecyl, n-propyl-ethylenediamine, n-propyltriethylenediamine, 3-chloropropyl, 5 -amino-1,3,4-thiadiazol-2-thiol, (CH3CH20)Si(CH2)3NHC(0)NH-R (R = 3-propyl, 3-pentyl, 3-heptyl) [11-13,15,16,18,19,21-23,26,33]... 

The determination of alkyltrimethyl ammonium compounds with the general formula RN (CH3)3X surfactant were performed using CF-FAB and ESI. The compounds examined were dodecyl-, tetradecyl-, and hexadecyl-trimethyl ammonium compounds dissolved in water. The product ion spectra of dodecyltrimethyl ammonium compound and its methyl-deuterated homologue were presented. The product ion at m/z 60 [(CH3)3NH]+of the non-deuterated compound at m/z 228 was the only ion that shifted after deuteration to m/z 69 [38],... 

Die Kinetik der Kupplung von 4-Nitro-phenyldiazonium-SaIzen in Gegenwart von Oberfliichen-aktiven Substanzen wurde untcrsucht1. Die Reaktionen von 2-Hydroxy- und 2-Hydroxy-6-sulfo-naphthalin waren mit 4-[(Dimethyl-hexadecyl-ammoniono)-methyl]-phenyldiazonium-dibromid t22 bzw. 244mal schneller (pH = 7) als mit der Vergleichsverbindung 4-(Dimethylamino-methyl)-phcnyldiazoniumbromid2. 

The photoinduced charge separation between N-alkyl-N -methyl-4,4 -dipyridinium dichloride (CnMV2+ Cn = dodecyl, tetradecyl, hexadecyl, and octadecyl) and Ru(bpy)j + was also strongly affected by the presence of CTAC micells 21 . Upon reduction by Ru(bpy)j +, the viologen aquires hydrophobic properties leading to solubilization into micells (Eq. (13)). The subsequent recombination reaction is retarded by the positive surface of the micell. This decreases the rate constant of the back electron transfer at least by 500. 

S)-3-0-methyl-4-0-hexadecyl-2/-acetamido-4/,6/-0-benzylidene-3 -0-(tert-butyldimethylsilyl)-2 -deoxy-D-glucopy ranosy lidene butane To a... 

Calibration Chromatograph successive 2- to 5-p.L portions of the upper layer of the Standard Preparation until the relative response factor, F, is constant (i.e., within a range of approximately 2%) for three consecutive injections. If using graphic integration, adjust the instrument to obtain 70% maximum recorder response for the hexadecyl hexadecanoate peak. Measure the areas under the major peaks occurring at relative retention times of approximately 1.00 (hexadecyl hexadecanoate) and 1.99 (methyl a-tocopheryl succinate), and record the values as Aj and As, respectively. Calculate F by the formula... 

Inhibition by l-decanol > 1-heptanoI > 1-butanol > ethanol Sodium 2-hexadecyl sulfate kijilko = 79-2 Sodium hexadecyloxy-ethyl sulfate kifilkt = 30-6 Disodium 2-sulfoocta-decyl sulfate k jko = 139 Sodium methyl-2-sulfohexadecanoate ... 

Figure 1-5. Separation of selected representatives of different lipid classes. (1) Paraffin, (2) K-hexadecyl palmitate (3) cholesterol palmitate (4) stearic acid methyl ester (5) glycerol tripalmitate (6) hexadecyl alchohol (7) stearic acid (8) cholesterol (9) glycerol-1,3-dipalmitate (10) glycerol-l,2-dipalmitate (11) glycerol monopalmitate (12) erucylamide. Column LiChrosphere Diol (125 x 3mm) 5- xm particles. Gradient from isooctane (A) to 60% methyl tritbutyl ether (MTBE) in 34min -t lOmin isocratic hold. (Reprinted from reference 14, with permission.)...

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