Octanesulfonic acid

Derivatization After Desorption. Alkanolamines, highly polar basic compounds, present a difficult analytical problem. Although direct gas chromatographic separations can be achieved, this technique is not applicable to trace analysis due to sorption problems at trace concentrations. A derivatization/gas chromatographic procedure has been developed for the determination of alkanolamines in air as low as 100 ppb (54,55). The samples are collected on activated alumina and desorbed with an aqueous solution of 1-octanesulfonic acid. The... 

Mobile phase phosphate buffer and 1-octanesulfonic acid. 

For orange juices and vegetables juice extraction using Ana-lytichem Cl 8 solid phase (SPE). For milk samples protein precipitation with HCL, vortex mixing, centrifugation, 1-octanesulfonic acid extraction. For cola MeOH addition, vortex mixing, filtration. 

The product, uridine, was separated from cytidine and allopurinol (internal standard) by chromatography on a Hypersil ODS column (4.6 mm X 100 mm, 5 pun). Hie mobile phase consisted of 100 mM ammonium acetate (adjusted to pH 5.0 with 6 M HC1) containing 1% (v/v) methanol and 1mA/ 1-octanesulfonic acid. The effluent was monitored at 262 nm. Uridine production was calculated with reference to a uridine standard, and after correction based on the concentration of the internal standard. 

Furosine, a marker of the Maillard reaction product, is a valuable indicator of food protein quality. It is a marker for thermal treatment in foodstuffs and is directly related to the loss of lysine availability. IPC was employed to determine furosine content in beverages based on soy milk and cow milk supplemented with soy isoflavones [39]. Furosine was also analyzed in 60 commercial breakfast cereals to assess their protein nutritional values. The higher the protein content in the formulation, the higher the furosine levels [40]. A simple IPC technique that uses 1-octanesulfonic acid as the IPR allowed the selective determination of histamine levels in fermented food [41]. 

Fig. 2 CCC separation of water-soluble vitamins by cross-axis CPC. Experimental conditions sample, riboflavin sodium phosphate (2.5 mg)-I-cyanocobalamin (2.5 mg)-i-pyridoxine hydrochloride (2.5 mg)-i-thiamine nitrate (2.5 mg) solvent system, 1-butanol and aqueous 0.15 M monobasic potassium phosphate containing 1.5% of 1-octanesulfonic acid sodium salt mobile phase, lower phase flow rate, 0.2 mL/min. For other experimental conditions, see Fig. 1 caption. SF = solvent front.

EINECS 226-195-4 NSC 2738 1-Octanesulfonic acid, sodium salt Sodium 1-octanesulfonate Sodium ootane-1-sulphonate monohydrate Sodium octanesulfonate Sodium octylsulfonate. 

Mobile phase MeOH 100 mM pH 3.0 phosphate buffer containing 50 mM 1-octanesulfonic acid 5 95 Flow rate 1 Detector UV 254... 

Mobile phase MeCN 10 mM potassium phosphate buffer adjusted to pH 3.2 with 0.2 M phosphoric acid 20 80 containing 3 mM 1-octanesulfonic acid Flow rate 1 Injection volume 30 Detector UV 226... 

Mobile phase MeCN buffer 20 80 (Buffer was 50 mM NaH2P04 + 1 mM tetramethylam-monium chloride + 0.5 mM 1-octanesulfonic acid adjusted to pH 3.5 with concentrated orthophosphoric acid.)... 

Mobile phase MeCN buffer 60 40 (Buffer was pH 3.0 containing 5 mM 1-octanesulfonic acid and 5 mM tetramethylammonium chloride.)... 

Sample preparation Condition a 3 mL C18 Bond Elut SPE cartridge with 500 p,L MeOH then 1 mL wash solution. 500 p,L Serum + 500 p,L wash solution, vortex for 3 s, add 25 p,L 240 p,g/mL p-nitrophenol in MeOH, vortex for 3 s, add to the SPE cartridge, wash with 1 mL wash solution, dry with vacuum applied for 30 s, elute with two 500 (xL aliquots of MeOH triethylamine 10 1. Combine the eluates and evaporate them to dryness under a stream of nitrogen, reconstitute in 200 pL mobile phase, iiyect a 50-100 pL aliquot. (Wash solution was 7 mL 3 M HCl + 1.6 g 1-octanesulfonic acid + 150 mL 100 mM disodium citrate made up to 800 mL with water, pH adjusted to 3.00 with 3 M HCl.)... 

Mobile phase MeCN buffer 24 76 with 0.8 g 1-octanesulfonic acid (Buffer was 7 mL 3 M HCl plus 150 mL 100 mM disodium citrate made up to 760 mL with water, pH adjusted to 3.00 with 3 M HCl.)... 

PIC A is tetrabutylammonium sulfate PIC B5 is pentanesulfonic acid PIC B6 is hexanesulfonic acid PIC B7 is heptanesulfonic acid PIC B8 is 1-octanesulfonic acid PIC D4 is dibutylamine phosphate... 

Prepare two aqueous solutions which contain approximately 1000 ppm each of 1-octanesulfonic acid or sodium dodecyl sulfate (use whichever is available) and p-toluenesulfonic acid dissolved in distilled, deionized water (DDI). Transfer a portion of this solution into a quartz, rectangular cuvette and record the UV absorption spectrum for both organic compounds. Prepare a 100-ppm solution that contains methyl methacrylate and a 100-ppm solution that contains ethyl glycolate. You will need to use the wavelength cutoff guide to choose a suitable solvent because these organic compounds do not dissolve to any great extent in water. Record the UV absorption spectrum between 200 and 350 nm. Compare the spectra when a solvent is placed in the reference beam of the dual-beam instrument. 

Heparin sodium salt. See Heparin sodium Heparin sulfate. See Heparin HEPPS HEPPS. See 3-f4-(Hydroxyethyl)-1-piperazinylj-propanesulfonic acid 1,3,4,6,7,9,9b-Heptaazaphenalene-2,5,8-triamine 1,3,4,6,7,9,9b-Heptaazaphenalene, 2,5,8-triamino-. See Cyamelurotriamide Heptacosafluorotributylamine. See Perfluorotributylamine Heptadecafluorodecahydro (trifluoromethyl) naphthalene. See Perfluoromethyidecalin Heptadecafluorooctane-1-sulfonic acid 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-Heptadecafluoro-1-octanesulfonic acid. See Perfluorooctanesulfonic acid Hepta decafluoro (trifluoromethyl) decalin. See Perfluoromethyidecalin Heptadecane. See n-Heptadecane n-Heptadecane... 

Octane, 1,r-oxybis-. See Dioctyl ether 1-Octanesulfonic acid,... 

Sodium caprylyl sulfonate CAS 13419-61-9 EINECS/ELINCS 236-525-9 Synonyms 1-Octanesulfonic acid, sodium salt Sodium decane-1-sulfonate Sodium octane sulfonate... 

Fig. 2 illustrates the CCC chromatogram of water-soluble vitamins obtained with the above solvent system, which comprise 1-butanol and aqueous 0.15 M monobasic potassium phosphate, including 1.5% of 1-octanesulfonic acid sodium salt. Riboflavin sodium phosphate, cyanocobalamin, riboflavin, pyridoxine hydrochloride, and thiamine nitrate were separated using the lower phase as the mobile phase. Riboflavin was found as an impurity contained in the riboflavin sodium phosphate sample. 

Uses Hydrotrope, solubilizer for electrolyte sol ns., hard-surf, cleaners Trade Names Hostaphat OPS Hostaphal OPS 75 Hostaphat OPS 100 1-Octanesulfonic acid, sodium salt CAS 5324-84-5 EINECS/ELINCS 226-1954 ClassiTication Sulfonic acid salt Empirical CjH jOjS Na,... 

ManufJDistrib. Acres Org. Advanced Synthesis Tech. Aldrich Eurolabs Ltd Trade Names Containing Witconate NAS-8 1-Octanesulfonic acid, sodium salt. See Sodium caprylyl sulfonate... 

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