liquid and gas) of the other component (methanol, hexane, benzene, ethyl ether
, and methyl acetate) in thermodynamic equilibrium, are also split into 100 points.
The most active compounds, halfordinol (12) and ethyl ether
aegeline (13), were studied for their dose dependency using the concentrations 12.5, 25, 50 and 100 [micro]M (Fig.
The clear solution was extracted with ethyl ether
in a liquid-liquid extractor.
(a) Whole bark (%) Inner bark (%) Solvent or treatment Plywood plant Paper mill Plywood plant Paper mill Hexane 1.7 3.1 3.5 3.3 Ethyl ether
0.6 4.4 0.2 3.3 Ethanol 4.3 14.5 21.1 16.4 Water 3.5 6.1 8.9 8.1 Total 10.1 28.1 33.7 31.1 1% NaOH 21.4 26.2 27.0 32.9 Outer bark (%) Solvent or treatment Plywood plant Paper mill Hexane 1.7 1.3 Ethyl ether
0.3 2.6 Ethanol 6.5 6.9 Water 4.9 6.5 Total 13.4 17.3 1% NaOH 20.9 23.7 (a) Values are expressed as a percentage of ovendry material and represent averages of replicate determinations; typical standard deviation was 2 percent of the reported value.
He recalled a Florida state bomb squad deliberately detonating less than half a pint of ethyl ether
. The resulting explosion punched a 25-foot fireball into the air, he said.
3, 2004 Journal of Agricultural and Food Chemistry, Vanderhaegen's team detailed how furfuryl ethyl ether
The monophenol 2,4-bis-(dimethylbenzyl)-6-t-butylphenol was prepared using a Friedel-Crafts alkylation reaction, in the same way as were the other phenols, except that 15 g of 2,4-bis-(dimethylbenzyl)phenol was used as the starting material for synthesis, and the phenol product was purified by normal-phase HPLC using a running solvent of hexane/1% ethyl ether
For the removal of neutral, acidic, and basic compounds in the ethyl ether
extract of serum, ion-exchange chromatography has been widely used (4-11).
Wood and bark extraction: Wood (2820 g) and bark (1070 g) samples were dried, ground separately and then extracted with ethanol to give 48 g and 22 g of the corresponding oily extracts, which were suspended in water and partitioned successively with hexane and ethyl ether
. In each case, the organic extractions were pooled and evaporated to give residues of 3.80 g (wood) and 4.75 g (bark).
The Composition of Chloromethyl Ethyl Ether
. The procedure for chloromethyl ethyl ether
preparation was as follows.
panthenyl ethyl ether
, milk protein, lactose, myo-inositol, acetyl cysteine, acetyl methionine, sodium citrate, citric acid.)
The root was torrefied (50 [degrees]C) and chopped, soaking in ethyl ether
for 24 h, then ultrasonic-assisted extraction was used for three times (30 min/time).