System acetone

Figure 3-3. Fugacity coefficients for the system acetone-cyclohexanone. ...

Application of the algorithm for analysis of vapor-liquid equilibrium data can be illustrated with the isobaric data of 0th-mer (1928) for the system acetone(1)-methanol(2). For simplicity, the van Laar equations are used here to express the activity coefficients. 

Schematic DRD shown in Fig. 13-59 are particularly useful in determining the imphcations of possibly unknown ternary saddle azeotropes by postulating position 7 at interior positions in the temperature profile. It should also be noted that some combinations of binary azeotropes require the existence of a ternaiy saddle azeotrope. As an example, consider the system acetone (56.4°C), chloroform (61.2°C), and methanol (64.7°C). Methanol forms minimum-boiling azeotropes with both acetone (54.6°C) and chloroform (53.5°C), and acetone-chloroform forms a maximum-boiling azeotrope (64.5°C). Experimentally there are no data for maximum or minimum-boiling ternaiy azeotropes. The temperature profile for this system is 461325, which from Table 13-16 is consistent with DRD 040 and DRD 042. However, Table 13-16 also indicates that the pure component and binary azeotrope data are consistent with three temperature profiles involving a ternaiy saddle azeotrope, namely 4671325, 4617325, and 4613725. All three of these temperature profiles correspond to DRD 107. Experimental residue cui ve trajectories for the acetone-...

Sorenson and Arlt Liquid-Liquid Equilihiium Data Collection, DECHEMA, Frankfurt, Germany, 1979) report several sets of liquid-liquid equilibrium data for the system acetone-water-chloroform, but the lowest solute concentrations reported at 25 C were. 3 weight percent acetone in the water layer in equilibrium with 9 weight percent acetone in the chloroform layer. This gives a partition ratio K of, 3.0. 

Nuclei resonating at different chemical shifts will also experience similar refocusing effects. This is illustrated by the accompanying diagram of a two-vector system (acetone and water), the nuclei of which have different chemical shifts but are refocused together by the spin-echo pulse (M, = magnetization vector of acetone methyl protons, M(v = magnetization vector of water protons). 

The extraction rate of mepanipyrim with refluxing was higher than that with shaking (30 min) and sonication (Ultrasonic, 600 W, 28 kHz, 30 min). For the solvent system, acetone and acetonitrile showed almost similar extraction efficiencies. Methanol was found to be a less effective extraction solvent. Mepanipyrim was unstable in the acidic solution and alkaline solution under reflux conditions at 80 °C. The extraction rate of mepanipyrim under these conditions decreased to about 50% and 20%, respectively. Therefore, neutral solution was used as the extraction solvent in this method. 

York, R. and Holmes, R. C. (1942) Ind. Eng. Chem. 34, 345. Vapor-liquid equilibria of the system acetone-acetic acid-water. 

Equilibrium data for the system acetone-acetic acid, at 760 mmHg, mol... 

Figure 13.31. Effect of agitator speed on efficiency for the system acetone-xylene-ester ...

Kurihara, K., Takimoto, Y., Ochi, K., and Kojima, K. Vapor-liquid equilibrium data for the quaternary system acetone + chloroform-t methanol -t benzene at 101.3 kPa, J. Chem. Eng. Data, 45(5) 792-795, 2000. 

Griesbeck et al. successfully transformed w-phthalimidoalkanoates via PET with concomitant decarboxylation and C,C combination leading to medium- and large-ring compounds with yields in the range 60-80%. Thereby, the solvent system acetone/water and K2CO3 employed for the deprotonation of the carboxylic acids were crucial (Scheme 45) [66]. 

Fig. 3.4. 13C chemical shifts of quinoline in the system acetone-water-quinoline with varying water concentration at 25 CC [94]. 

Figure 14. Blends of SBR and NBR swollen in differential solvent system acetone and cyclohexane...

Nineteen different compounds (or compound classes) that are known to be rapidly assimilated by bacterioplankton have been identified as DOM photoproducts (Table I). Five of these photoproducts are formed with source DOM from both freshwater and marine environments acetaldehyde, formaldehyde, glyoxylate, pyruvate, and amino acids. Nine others have been reported only from freshwater systems (acetate, butyrate, citrate, formate, levulinate, malonate, oxalate, succinate, and dissolved carbohydrates), whereas five have been reported only from marine systems (acetone, butanal,... 

Treybal, R.E., Weber, L.D., Daley, J.F. (1946) The system, acetone-water-1,1,2-trichloroethane. Ternary liquid and binary vapor equilibria. Ind. Eng. Chem. 38, 817-821. 

Table III Retention data (hRf values) for bromophos-ethyl and dimethoate on an HPTLC pre-coated plate silica gel 60 (solvent system n-heptane/acetone 65/35) and on an HPTLC pre-coated plate RP-18 (solvent system acetone/water 80/20)...

Flgurs 1J Effect of composition an liquid activity coefficients, fa) For the positive-deviation system n-propanol water at 1 atm (6) for toe negative-deviation system acetone-chloroform at 1 atm. (From R. H. Ferry, Chemical Engineer Handbook, 5th ed.. 1973, Copyright by McGraw-Hill. Inc. Reprinted by permission.)... 

Figure 1.4 Activity coefficient ratios (a in the positive-deviation system, n-propanol-water (6) in the negative-deviation system, acetone-chloroform.

For the system acetone(l)/acetonitrile(2), the vapor pressures of the pure species are given by... 

U4 The following is a set of VLE data for the system acetone(l)/chloroform(2) at 50°C [H. R and W. Schroder, Z. Phys. Chem. (Frankfurt), II 41, 1957]. Assuming the validity of Eq. (11. find parameter values for the Margules equation that provide a suitable correlation of these and prepare a Pxy diagram that compares the experimental points with curves determined from correlation. 

For the system acetone(l)/methanol(2), the following are recommended values for the Wilson parameters ... 

System Acetone in Water Extracted with Toluene - Toluene Dispersed... 

To a very good approximation, the excess Gibbs energy for the system acetone(l)/methan is given by... 

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