Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Chloroform-cyclohexane

Water with aniline, benzene, benzyl alcohol, carbon disulfide, carbon tetrachloride, chloroform, cyclohexane, cyclohexanol, cyclohexanone, diethyl ether, ethyl acetate, isoamyl alcohol, methyl ethyl ketone, nitromethane, tributyl phosphate or toluene. [Pg.30]

Benzene with acetone, butyl alcohol, carbon tetrachloride, chloroform, cyclohexane, ethanol, acetonitrile, petroleum ether or pyridine. [Pg.37]

Ethanol with acetic acid, acetone, benzene, chloroform, cyclohexane, dioxane, ethyl ether, pentane, toluene, water or xylene. [Pg.37]

The influence of the lipophilic external phase on the production of xylan-based microparticles by interfacial cross-linking polymerization has been investigated (Nagashima et al., 2008). Three different external phases were investigated a 1 4 (v/v) chloroform cyclohexane mixture, soybean oil, and a medium chain triglyceride, with viscosities below 1, 24, and 52 cP, respectively. It was observed that the use of these different lipid phases results in different macroscopic and microscopic aspects of the system (Figure 10). [Pg.73]

Caffeine was extracted from ficw varieties of roasted coffee beans and was determined in parallel by (1) measurement of spot area after thin layer chromatography on silica gel GF plates (development with chloroform/ cyclohexane/glacial acetic acid, 8 2 1, visualization in UV light), and (2) Kjeldahl N determination. Caffeine contents by (1) and (2), respectively, in the five varieties analyzed were (percent in DM) Santos lave 0, 1.10, and 1.12 Java Robusta 3, 1.19, and 1.22 Camerun Robusta 2, 1.16, and 1.19 Mocca 2, 1.21, and 1.26 Guatemala 0, 1.18, and 1.20. (1) is considered slightly less accurate than (2) but rather easier and more rapid.21... [Pg.31]

The CL system luminol-hydrogen peroxide was characterized by Hoshino and Hinze in HTAC reversed micelles, formed in a 6 5 (v/v) chloroform-cyclohexane mixture [63], The results indicate that such a CL system can be used from an analytical point of view in a pH interval of 7.8-9.0 without the need to add a catalyst or a co-oxidant. In these conditions an analytical method was established for determination of hydrogen peroxide that, apart from supplying much milder conditions compared to the usual situation in an aqueous medium, is also acceptably precise and reproducible. [Pg.306]

Hydrolysis of the oxidate of anthrone resulted in the precipitation of anthraquinone (m.p. 263-268°C.). Extraction of the aqueous filtrate with chloroform yielded the DMSO adduct (1 to 1) of anthraquinone (m.p. 158-158.5°C.) (recrystallized from a chloroform-cyclohexane mixture). [Pg.210]

COOCHj J NH-CO-CHa h3C-CO-hn yN COOCH3 100 25 2,5-Bis-[ acetylamino -3- nitro-terephthalsaure- dimethylester 56 240-241 (Chloroform/ Cyclohexan) 3... [Pg.275]

HO, C6H5 s 67 konz. 0 4- (2,4-Dinitro-phen-yl)-2,2,6,6-tetra-methy 1-1,2,5,6-tetra-hydro-pyridin-l-oxyl 75 156-157 (Chloroform/ Cyclohexan) 7... [Pg.287]

Media Acetone, benzene, benzyl alcohol, butanol, 2-butanol, carbon tetrachloride, cetane, chlorocyclohexane, chloroform, cyclohexane, cyclohexanone, diehloroeihane, di-chloromethane, dioxane, ethanol, ether, ethyl acetate, hexane, methanol, 2-propa-nol, pyridine, letrachloromethane, toluene, water, xylene... [Pg.527]

Apples, pears Homogenized, extraction with chloroform, 0.1 M HC1, neutralized Na2C03, extraction chloroform HPTLC NH2 plates deriva-tized with propylamine, Supelco LC 18 Chloroform-cyclohexane-methanol (6.0 1 0.1), methanol-phosphate buffer (pH 6.6) (56 44) UV 285 nm UV 280 nm 48... [Pg.589]

Benzene (selective for PS) THF, dioxane, chloroform, cyclohexane (neutral)... [Pg.158]

TLC was carried out on various types of plates silica gel, silanized silica gel, cellulose and alumina, as well as in several different solvent systems benzene, chloroform, cyclohexane, benzene/acetone (90 10), cyclohexane/ethyl acetate (95 5), cyclo-hexane/acetone/triethylamine (70 25 5), hexane/benzene (60 40) and hexane/ether (80 20). Spots were either visualized by ultraviolet or developed by pulverization of a 1% blue B salt aqueous solution. [Pg.216]

Polysarcosine Polystyrene (atactic) Xylol Water Benzene Chloroform Cyclohexane Dichloroethane Ethylbenzene Ethylcyclohexane Methylcyclohexane Methyl ethyl ketone... [Pg.299]

The formation of either the radical cation M,+ or the protonated [M + H]+ molecule, or both together, will depend on the relative ionization energies or proton affinities of the sample molecules and the solvent components. Concerning the solvent, the charge exchange is favoured for solvents with low proton affinity (water, chloroform, cyclohexane, etc.), while solvents with higher proton affinities (methanol, acetonitrile, etc.) will favour proton transfer. [Pg.60]

The effects of solvents and their properties on electro-spinnability of the as-prepared polystyrene (PS) solutions and the morphological appearance of the as-spun PS fibers were investigated qualitatively by means of a scanning electron microscope (SEM) in [62]. The eighteen solvents used were benzene,t-butylacetate, carbontetrachloride, chlorobenzene, chloroform, cyclohexane, decahydronaphthalene (decalin), 1, 2-dichloroethane, dimethylformamide (DMF), 1,4-dioxane, ethylacetate, ethylbenzene, hexane,... [Pg.119]

Bromotrichloromethane Butyl acetate 1 -Butanol Dibutyl ether Carbondisulfide Carbon tetrachloride Chloroform Cyclohexane... [Pg.57]

The method of preparation of the above silver(I) compounds is identical to that used in Sec. A. The compounds can be purified in an identical manner except that a chloroform-cyclohexane mixture is used. The compounds are obtained in approximately 40% yields. Anal. Calcd. for AgCisHisOsFeCcyclo-octene complex) C, 36.72 H, 3.56 mol. wt., 425. Found C, 36.1 H, 3.47 mol. wt., 425 (bromoform). Satisfactory carbon and hydrogen analyses were not obtainable for the remainder of the compounds, since they lose olefin readily. ... [Pg.119]

The thio-disuccinate 13 aggregates in chloroform/cyclohexane (1 1) to form inverse micelles, which bind and solubilize carbohydrates. H-NMR spectra of nitrophenolates and ESR spectra of TEMPO derivatives indicate that the carbohydrates bind tightly to the surfactant s head group at low water con-tent ". ... [Pg.43]

Polyethylene Organic and water extracts HPTLC. Plate = 10 x 10 cm Fertigplatten Kiselgel 40. Mobile phase chloroform/cyclohexane (12 1). Densitometric detection. Eganox 1076 3,5-di-fert-butyl-4-hydroxy-phenyl propionic acid 35... [Pg.1100]


See other pages where Chloroform-cyclohexane is mentioned: [Pg.73]    [Pg.79]    [Pg.96]    [Pg.286]    [Pg.176]    [Pg.586]    [Pg.272]    [Pg.53]    [Pg.478]    [Pg.580]    [Pg.149]    [Pg.238]    [Pg.1293]    [Pg.201]    [Pg.583]    [Pg.86]   
See also in sourсe #XX -- [ Pg.112 ]




SEARCH



© 2024 chempedia.info