Toluene-ethyl-acetate

Stannous Oxalate. Stannous oxalate, Sn(C20 (mol wt 206.71, dec 280°C, sp gr 3.56 at 18°C), is a white crystalline powder, is soluble in hot concentrated hydrochloric acid and mixtures of oxaHc acid and ammonium oxalate, and is insoluble in water, toluene, ethyl acetate, dioctyl phthalate, THF, isomeric heptanes, and acetone (171). It is prepared by precipitation from a solution of stannous chloride and oxaHc acid and is stable indefinitely. 

Liquid paraffin luteoskynn, rugulosin stabilization spray solution, 50% in toluene—ethyl acetate — formic acid (16-1-4-1-1) [244]... 

Mobile phase Toluene — ethyl acetate — glacial acetic acid (90 -f 5 -t- 5). 

Mobile phase 1 Toluene — ethyl acetate — formic acid [16 + 4 + 0.5 (0.4 )]. 

Linear non-cross-linked polystyrene has been used for organic synthesis since it is readily soluble in common organic solvents (i.e., dichloromethane, chloroform, tetrahydrofuran, toluene, ethyl acetate, and pyridine) but precipitates upon addition of water or methanol [123-126]. However, no examples of the use of this polymer in conjunction with microwave chemistry have been reported. 

Mobile phase Toluene - ethyl acetate - ethanol (20+10+10). 

Chloroform-methanol (9 1, v/v) or toluene-ethyl acetate (4 1, v/v) or ethyl acetate-petroleum ether (1 9, v/v)... 

PLC separations (Figure 16.13) started with toluene-ethyl acetate (95 + 5 v/v) as the mobile phase, whereas the final purification was achieved with cyclohexane-diethyl ether (80 -i- 20 v/v). The isolated and extracted compound matched the GC-MS of 24-norursa-3,12-dien-ll-one (compound 11) and is confirmed as an oxidized pyrolyzed boswelhc add. 

Remove the solvent in vacuo and purify the resultant mixture using silica gel chromatography. The initial eluent is toluene, which will remove the unreacted Cgo, and then followed by a 10 1 mixture of toluene/ethyl acetate to elute the desired Cgo-protected-amine derivative. 

S,3//,4/C6//)-carane-3,4-diol with (l/ )-tra s-chrysanthemic acid is 0.62, and the Rf. value of the corresponding ( l,S )-/ra .v-chrysanthemic acid ester is 0.65 (toluene ethyl acetate = 3 1). However, the /-menthol ester of (1 /. S )-/ra .v-chrysanthemic acid could not easily be separated by silica gel column chromatography to obtain (1 AfWran.v-chrysanthemic acid /-menthol ester. 

Mobile phase composition 1 = toluene-ethyl acetate-formic acid (30 10 10, v/v) 2 = toluene-ethyl acetate-formic acid (55 20 25, v/v) 3 = toluene-acetone-formic acid (7 6 1, v/v) 4 = benzene-ethyl acetate-formic acid (30 15 5, v/v) 5 = chloroform-methanol-formic acid (15 3 2, v/v) 6 = chloro-form-methanol-formic acid (147 30 23, v/v) 7 = Toluene-chloroform-acetone-formic acid (8 4 3 3, v/v) 8 = chloroform-methanol-formic acid (37 8 5, v/v) 9 = chloroform-methanol-formic acid (36 9 5, v/v) 10 = ethyl acetate-chloroform-formic acid (24 21 5, v/v) 11 = ethyl acetate-chloro-form-formic acid (23 21 6, v/v). 

TLC separation of the components of black dye commercial product (BDCP) was performed on silica layers. The chemical structures of the dye components are shown in Fig. 3.17. Dyes were extracted from the effluent of the dye processing plant, from the untreated river water and from the drinking water treatment plant. The organic extracts were further concentrated and purified using a copolymer of styrene divinyl benzene. The mobile phase for TLC separation consisted of toluene-ethyl acetate (8 1, v/v). The Rp values of dye components were 0.43 (C. I. Disperse Violet 93), 0.48 (C. I. Disperse Orange 37) and 0.59 (C. I. Disperse Blue 373), respectively. 

Stirring rate kia n-Hexane Toluene Ethyl acetate Aq. buffered solution... 

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