N-cetylpyridinium chloride

EXPERIMENTAL PROCEDURES AUTOMATED TURBIDIMETRIC TITRATION. A method for the automated aqueous turbidimetric titration of surfactants has been published (10) in which anionic surfactants are titrated against N-cetylpyridinium chloride to form a colloidal precipitate near the equivalence point. N-cetylpyridinium halides have a disadvantage in that they have the tendency to crystallise out of solution (15), consequently the strength of the solution may alter slightly without the knowledge of the operator, also the crystals suspended in solution may cause damage to the autotitrator. In view of these drawbacks hyamine was preferred as the titrant. 

CEPRIM CETAMIUM CETYLPYRIDINIUM CHLORIDE N-CETYLPYRIDINIUM CHLORIDE 1-CETYLPYRIDINIUM CHLORIDE DOBENDAN HEXADECYLPYRIDINIUM CHLORIDE n-HEXADE-CYLPYRIDINIUM CHLORIDE 1-HEXADECYLPYRIDINIUM CHLORIDE INTEXSAN CPC PRISTACIN... 

CETYLPYRIDINIUM CHLORIDE see CCXOOO 1-CETYLPYRIDINIUM CHLORIDE see CCXOOO N-CETYLPYRIDINIUM CHLORIDE see CCXOOO CETYLTRIMETHYLAMMONIUM BROMIDE see HCQ500... 

Potassium poly (vinyl alcohol) sulfate (PVSK) was standardized against 2.5 X 10" N cetylpyridinium chloride monohydrate. A 1-mL ahquot of a 200-600-ppm copolymer solution was combined with 1 drop of toluidine blue indicator and agitated with a magnetic stirrer. PVSK was added dropwise until the endpoint was reached. Each titration was repeated a minimum of four times. 

Cetylpyridinium chloride N-Cetylpyridinium chloride. See Cetylpyridinium chloride Cetyl pyrrolidonylmethyl dimonium chloride CAS 115612-97-0 Synonyms Methanaminium, N-(2-oxopyrroloidiniyl) methyl-N-methyl-N-hexadecyl-, chloride 1-Pyrrolidinemethanaminium, N-hexadecyl-N,N-dimethyl-2-oxo, chloride Classification Quaternary ammonium salt Empirical C23H47N2O Cl Uses Antistat, hair conditioner in cosmetics Cetyl ricinoleate... 

Synonyms 1-Cetylpyridinium chloride N-Cetylpyridinium chloride CPC Hexade-cylpyridinium chloride 1-Hexadecylpyridinium chloride n-Hexaderylpyridinium chloride... 

Cetylpyridinium chloride N-Cetylpyridinium chloride. See Cetylpyridinium chloride Cetyl ricinoleate... 

CTP]C1/A1C13 (CTP is N-cetylpyridinium), and [EMIM][C1-A1C13], with the best results having been observed in the traditional aluminium(III) chloride ionic liquids [67-69]. 

Fig. 10.8 Quaternary ammonium compounds (QACs) A, general structure ofQACs B, benzalkonium chloride (n - S - 18) C, cetrimide (n - 12 - 14 or 16) D, cetylpyridinium chloride.

Concerning the SLN produced by hot homogenization as described by Olbrich et al. [19], as lipidic matrix Compritol ATO 888 or paraffin were used, as tenside a mixture of Tween 80 and Span 85 was used, and as charge carrier either EQ1 [N,N-di-(()-s(eaoryI e(liyI)-.V,A -di methylammonium chloride] or cetylpyridinium chloride were used. The resulting particles were characterized by size between 101 and 105 nm and showed zeta potentials around 40 mV at pH 7.4. 

Hexadecylpyridinium chloride, cetylpyridinium chloride n-Hexadecyltrimethylammonium bromide (hydroxide) or cetyltrimethylammonium bromide (hydroxide) Stoichiometric concentration of surfactant (detergent) Concentration of micellized surfactant generally [D ] = [D]-cwc... 

In the photopolymerisation of methyl methacrylate induced by mixtures of chloroacetic acid derivatives and dimethylaniline the kinetics were found to be influenced by the degree of substitution of the chlorine atoms while the initiation occurred through a complex S. Ethyl aluminium sesquichloride has been found to induce the photocopolymerisation of 9-vinylanthracene with methyl methacrylate at -20°c while photochromic polymers have been made by reacting para-bromoazobenzene with ethylene gas O. Surface active N-cetylpyridinium bromide and chloride have been found to... 

Figure 34-10. Effect of sintered-glass porosity on enrichment ratio. SDS, sodium docecyl sulfate CPC, cetylpyridinium chloride DADS, sodium n-hexyl diphenyloxide disulfonate.

FIGURE 6.1 Viability(MTT assay) of mouse peritoneal macrophages after 20 h of incubation with SLN, polystyrene particles, or control emulsion (1 1 mixture of soybean oil and MCT stabilized with Lipoid S75) of different sizes at a concentration of 0.1% (means + standard deviation, n = 3). The viability of untreated cells is 100%, and the IL-6 secretion is 1.0. D 114, Dynasan 114 L S75, Lipoid S75 CPC, cetylpyridinium chloride SO, soybean oil. 

FIGURE 6.14 Organic formulas of the following cationic hpids (1) benzaUconium chloride (alkyldimethylbenzylammonium chloride, BA) (2) cetrimide (tetradecyltrimethylammonium bromide, CTAB) (3) cetylpyridinium chloride (hexadecylpyridinium chloride, CPC) (4) dimethyldioctadecylammonium bromide (DDAB) (5) N,N-di-( 3-stearoylethyl)-N,N-dim-ethyl-ammonium chloride (Esterquat lEQ) (6) N-[l-(2,3-dioleoyloxy)propyl]-N,N,N-trime-thylammonium chloride (DOTAP). 

N-Cetylpyridinium bromide. See Cetyl pyridinium bromide Cetyl pyridinium chloride CAS 123-03-5 (anhyd.) 6004-24-6 (monohydrate) EINECS/ELINCS 204-593-9 UN 2811 (DOT)... 

Synonyms 1-Cetylpyridinium chloride N-Specialty Chemicals Source Book-Third Edition... 

Aluminum phosphate molecular sieve fibers were obtained by Yates et al. [334] by hydrothermal treatment (180 C/6 h) of a microemulsion system containing (a) toluene, (b) n-butanol,(c) cetylpyridinium chloride, CPC (surfactant) and (d) an aqueous phase made up of aluminum triisopropoxide, phosphoric acid, hydrofluoric acid and triethylamine in water. The treatment yielded long fibers (200-300 nm wide, 15-30 im long), confirmed by X-ray powder diffraction to be AIPO4-5 with preferred orientation. 

Benamor M, Aguersif N, and Draa MT (2001) Spectrophotometric determination of cetylpyridinium chloride in pharmaceutical products. Journal of Pharmaceutical and Biomedical Analysis 26(1) 151-154. 

To a stirred solution of cetylpyridinium chloride (2.0 g, 5.56 mmol) in water (200 mL) is added dropwise peroxotungstic acid (5.7 mL of a 0.9 N solution, 5.1 mmol of tungsten) the flaky precipitate that forms immediately is stirred for additional 30 min, filtered on a Buchner funnel, and washed with water until no frothing of the filtrate occurs. The cake is dried at 40°C under vacuum (heating above 60°C may induce decomposition of the peroxo salt). Yield 3.1 g (96%). 

Ishii, Y., Yamawaki, K., Ura, T., et al. (1988). Hydrogen Peroxide Oxidation Catalyzed by Heteropoly Acids Combined with Cetylpyridinium Chloride. Epoxidation of Olefins And Allylic Alcohols, Ketonization of Alcohols and Diols, and Oxidative Cleavage of 1,2-Diols and Olefins, J. Org. Chem., 53, pp. 3587-3593 Sato, K., Aoki, M., Ogawa, M., et al. (1997). A Halide-Free Method for Olefin Epoxidation with 30% Hydrogen Peroxide, Bull. Chem. Soc. Jpn., 70, pp. 905-915 Xi, Z. W., Zhou, N., Sun, Y., et al. (2001). Reaction-Controlled Phase-Transfer Catalysis for Propylene Epoxidation to Propylene Oxide, Science, 292, pp. 1139-1141 Neumann, R. 

Spin probes at the fast motional limit have also been utilized in studies of heterogeneous molecular assembly by HF EPR. Cramer et al. utilized the spin probe TEMPO (2,2,6,6-tetramethylpiperedine-l-oxyl) to investigate poly(butylacrylate) and poly(butylmethacrylate) films. The same spin probe was also used by Smirnov and co-workers to study rotational diffusion of the nitroxide in two phases of aqueous phospholipid dispersions with W-band EPR. Bakker and co-workers utilized another probe - 4-[N,N-dimethyl-lV-(n-hexadecyl)ammonium]-2,2,6,6-tetramethylpiperidinyl-iV-oxyl (HTAB ) to study absorption and aggregation of cetylpyridinium chloride and cetylpyridin-ium salicylate (CPSa) on silica nanoparticles. From W-band line width analysis it was concluded that CPSa on silica surfaces forms two coexisting aggregate phases, one which excludes HTAB and one in which HTAB is concentrated. 

Manuf./Distrib. Alfa Chem Amyl Contract Chems. Ltd Dishman USA Eurolabs Ltd Mone-Tec Ind. Sigma-Aldrich Chemie GmbH/Fluka Sigma Spectrum Chems. Lab. Prods. Tianjin Mid-Chem Universal Preserv-A-Chem N-Cetylpyridinium bromide. Cetylpyridinium bromide Cetylpyridinium chloride... 

Hexadecylpyridinium chloride 1-Hexadecylpyridinium chloride n-Hexade-cylpyridinium chloride. See Cetylpyridinium chloride Hexadecyl sodium sulfate. See Sodium cetyl sulfate Hexadecyl stearate n-Hexadecyl stearate. See Cetyl stearate Hexadecyl (sulfophenoxy) benzenesulfonic acid, disodium salt See Sodium hexadecyl diphenyl disulfonate Hexadecyl tetradecanoate. See Cetyl myristate Hexadecyltrimethylammonium bromide. See Cetrimonium bromide Hexadecyl trimethyl ammonium chloride. See Cetrimonium chloride Hexadecyl trimethyl ammonium p-toluene sulfonate. See Cetrimonium tosylate Hexadienic acid Hexadienoic acid 2/4-Hexadienoic acid. See Sorbic acid 2/4-Hexadienoic acid potassium salt. See Potassium sorbate Hexaethylene glycol. See PEG-6... 

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