Ethanol ethyl acetate

Benzene Hexane Carbon tetrachloride Ethanol Ethyl acetate... 

Acetic acid with chloroform, ethanol, ethyl acetate, acetonitrile, petroleum ether, or water. 

Chloroform with acetic acid, acetone, benzene, ethanol, ethyl acetate, hexane, methanol or pyridine. Cyclohexane with acetone, benzene, carbon tetrachloride, ethanol or diethyl ether. 

Consider the effect of the abstraction of individual solvents on consequent solute concentration. Let the volume fraction of ethanol, ethyl acetate and n-hexane in the original mobile phase mixture be (ae), (cxea) and (an), respectively. If a given solute is placed on the TLC plate at a concentration (cs) then, assuming for the... 

A similar synthesis starting with l-(2-nitrobenzyl)pyrrol-2-aldehyde used ethanol-ethyl acetate as solvent (62). Indoles are prepared in excellent yield by hydrogenation of o-nitrobenzyl ketones over Pd-on-C (i). Azaindoles are correspondingly prepared from nitropyridines (97). 

The crude product (48.4 grams, 80.9% yield) was recrystallized from an absolute ethanol-ethyl acetate solvent system by suspending the salt in boiling anhydrous ethyl acetate and just enough absolute ethanol was gradually added to effect solution after which the solu-... 

Extraction and purification of luciferin and luciferase (Viviani etal., 2002a) To isolate luciferin, the lanterns of the Australian A. flava were homogenized in hot 0.1 M citrate buffer, pH 5, and the mixture was heated to 95°C for 5 min. The mixture was acidified to pH 2.5-3.0 with HCl, and luciferin was extracted with ethyl acetate. Upon thin-layer chromatography (ethanol-ethyl acetate-water, 5 3 2 or 3 5 2), the active fraction of luciferin was fluorescent in purple (emission Lav 415 nm when excited at 290 nm). To isolate the luciferase, the cold-water extract prepared according to Wood (1993 see above) was chromatographed on a column of Sephacryl S-300. On the same... 

Acetaldehyde, methanol, ethanol, ethyl acetate, n-propyl alcohol, isobutyl alcohol, acetic acid, amyl alcohol, and isoamyl alcohol... 

Mobile phase n-Hexane — diethyl ether — ethanol — ethyl acetate — formic acid (909+40+26+25+1)... 

Water at 25 C Organic solvents at 20 C Dichloromethane Ethanol Ethyl acetate Hexane Toluene Acetone Benzene... 

R-Hexane — diethyl ether - ethanol - ethyl acetate - formic acid (543-1-200-1-130+127-1-1). 

Acetic acid + Ethanol Ethyl acetate + water... 

Table 12.1 Data for the ethanol-ethyl acetate-methanol system.

Sketch the distillation line map (residue curve map) for the system ethanol-ethyl acetate-methanol at 1 atm and 5 atm from the data in Table 12.1. Does the system have a distillation boundary Is the position of the boundary sensitive to pressure ... 

Ethanol-ethyl acetate azeotrope 72.2°C 0.465 mole fraction ethanol 122.7°C 0.677 mole fraction ethanol... 

Besides butanol and ethanol ethyl acetate, ethyl butyrate and butyl butyrate was detected in the reaction mixture. 

Part 28 Determination of 1,1,1-trimethylolpropane (TMP) in food simulants Aqueous food simulants are saturated with potassium carbonate and extracted with ethanol/ethyl acetate. After evaporation of solvent the extracted TMP is silyated with trimethylsilylimidazole in pyridine and determined by GC with flame ionisation detection... 

Extensive solubility data is not readily obtainable due to the scarcity of calcitriol. The material is slightly soluble in methanol, ethanol, ethyl acetate and tetrahydrofuran (3). 

Measurements of aqueous solubility and partition coefficient between cellulose acetate and water were compared for thirty disperse dyes and an approximate inverse relationship was postulated [60]. This can only be valid to a limited extent, however, because the partition ratio also depends on the saturation solubility of the dye in cellulose acetate. This property varies from dye to dye and is not directly related to aqueous solubility. The solubilities of four dyes in a range of solvents were compared with their saturation values on cellulose acetate. Solubilities in benzene showed no significant correlation. With the other solvents the degree of correlation increased in the order ethanol < ethyl acetate < 20% aqueous diethylene glycol diacetate (CH3COOCH2CH2OCH2CH2OCOCH3). The last-named compound was suggested as a model with polar groups similar to those in cellulose acetate [86]. 

The infrared spectrum (CHC1S) showed absorption at 2705, 1725, and 1605 cm-1. The 2,4-dinitrophenylhydrazone, recrystallized from ethanol-ethyl acetate as long, yellow-orange needles, melts at 150-152° (reported3 154-155°). 

Chemical/Physical. Slowly dissolves In water forming acetic acid. In ethanol, ethyl acetate Is formed (Wlndholz et al, 1983). 

Miscible with aromatic hydrocarbons, ethanol, ethyl acetate, linseed oil, and petroleum solvents (Windholz et al, 1983)... 

Dimethyl sulfoxide Ethanol Ethyl acetate Ethyl ather Ethyl formate Formic acid Heptane Isobutyl acetate Isopropyl acetate Methyl acetate... 

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