Didecyl

Alkylbenzyldimethyl quaternaries (ABDM) are used as disinfectants (49) and preservatives. The most effective alkyl chain length for these compounds is between 10 and 18 carbon atoms. Alkyltrimethyl types, alkyl dimethylbenzyl types, and didodecyl dimethyl ammonium chloride [3401-74-9] exhibit excellent germicidal activity (151—159). Dialkyldimethyl types are effective against anaerobic bacteria such as those found in oil wells (94—97). One of the most effective and widely used biocides is didecyl dimethyl ammonium chloride [7173-57-5]. 

Dioctyl ether Didecyl ether Methyl ethyl ether 1,2-Diethoxyethane 9.2 Unsaturated Ethers Divinyl ether... 

Cycloheptatriene containing 9% toluene is available from the Shell Chemical Company, New York. Less pure cycloheptatriene, obtained by pyrolysis of bicycloheptadiene followed by a crude distillation, has been used successfully in this preparation. The quantity of the tropilidene/toluene mixture is adjusted in accord with its purity as estimated by vapor-phase chromatography on didecyl phthalate. 

Anionic surfactants like alkanesulfonates can also be determined by poten-tiometric titration with ion-selective electrodes. Recently, a special PVC electrode was offered as a high-sense surfactant electrode in combination with the new titrant l,3-didecyl-2-methylimidazolium chloride [20]. This one-phase... 

FIG. 11 Titration plot of alkanesulfonates. Sample 60 wt % of Hostapur SAS 60, monosulfonates fraction contents ca. 140 mg/100 ml (10% MeOH) solution to be titrated 10 ml, 5 ml buffer pH 3 (Merck), 5 ml MeOH, diluted to 100 ml with water titrant 0.004 mol/l TEGOtrant A 100 (l,3-didecyl-2-methyl-imidazolium chloride, Metrohm 6.2317.000) titrator Titrino 716 DMS with automatic titrator 727 and propellant stirrer titration mode dynamic end point titration (DET), high-sense electrode Metrohm 6.0504.15Q, reference electrode Ag/AgCl Metrohm 6.0733.100, EP = end point. 

So erhalt man z. B. aus 1-Jod-decan in DMF/TEAPan Quecksilber lediglich bei-1,1 V [vs. Cd(FIg)/CdCl2/NaCl] ausschlieBlich Didecyl-quecksilber ansonsten werden wech-selnde Gemische von Decan, Decen-(1), Decanol-(l) sowic /V-Methyl-N-decyl-formamid (bei — 1,9 V 40%d-Th.) erhalten7. Zur Reduktion von 3-Brom-1-phenyl-propan zu Propyl- benzol s. S. 619. 

Potentialspezifisch bildet sich aus 1-Jod-decan in DMF/Tetrabutylammoniumperchlo-rat bei —1,1V [Cd(Hg)/CdCl2/Cle] quantitativ Didecyl-quecksilber bei negativeren Po-... 

Bis-[2-bcnzoyl-phcnyl]- 678 Bis-[4-tert.-butyl-benzyl)- 625 Bis-[cyan-mcthyl]- 703 Bis-[3,4-dichlor-benzyl]- 625 Bis-[diphenylmethyl]- 609 Bis-[4-methoxy-phcnyIJ- 625 Bis-[4-methyI-benzyl]- 625 Bis-[4-methyI-phenyI]- 625 Bis-[1 -naphthyl-(l )-iithyl]- 609 Bis-[3-oxo-butyI]- 585 Bis-[tridecafluor-hexyl]- 624 Cyanmcthyl- -chlorid 702 Dibenzyl- 622 Dicyclohexyl- 609 Didecyl- 623 f. 

Dicyclopentadiene resins, 20 114 formulation of, 20 103-104 Dicyclopentadienylmagnesium, 25 120 Didecyl dimethylammonium chloride (Sanaqua), disinfecting agent for aquaculture in U.S., 3 205t, 212t 2,6 -D ideoxy- 3- C-methyl- 3- O -methy 1-L-ribohexose, 4 713 Di(diacyl peroxides), 18 476 Die attach process, 17 830 Die casting... 

Bardac 22 Didecyl dimethyl ammonium chloride Lonza, Switz. Stephan, USA Biocide... 

Complex of 4,13-Didecyl-l,7,10,16-tetraoxa-4,13-diazacyclooctadecane (5c) with thiourea (1 14)... 

Gas-liquid chromatography analysis of the product may be effected using didecyl phthalate as the stationary phase.193... 

The first electrode of this type was based on the Ca -didecyl-... 

In this procedure, the HPLC analysis is carried out on a DuPont Zorbax ODS column using methanol, acetonitrile and water 10 2 1 at the mobile phase. This system resolves vitamins D3 from D2 and from degradation products and other fat soluble vitamins. Didecyl and dinonyl phthalate were used as the internal standards. The latter was included for use in the event that extraneous peaks interfered with the didecyl phthalate peak. Figure 11 shows a chromatogram of an extract of a multivitamin formulation with the two added internal standards. 

DDSO didecyl sulphoxide HPMBP 1-phenyl, 3-methyl, 4-benzoyl,... 

HTTA thenoyl trifluoro acetone MNDDA N-methyl didecyl amine... 

Surfactants are used primarily as inert ingredients of pesticides, especially in agricultural applications. These surfactants usually have TSCA as well as inert pesticidal regulatory status in the US. Some surfactants are active components in pesticides. For example, the cationic surfactants benzalkonium chloride and didecyl ammonium chloride and their various derivatives are registered as active ingredients in disinfectant products with many household and industrial applications. 

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