Carbon tetrachloride Benzene

Other procedures have also been reported (38,110,111). The properties and chemistry of 9-BBN have been reviewed (112). The reagent is a white crystalline soHd, stable indefinitely at room temperature, soluble in hexane, carbon tetrachloride, benzene, tetrahydrofuran, and diethyl ether. It exists as a... 

Styrene is a colorless Hquid with an aromatic odor. Important physical properties of styrene are shown in Table 1 (1). Styrene is infinitely soluble in acetone, carbon tetrachloride, benzene, ether, / -heptane, and ethanol. Nearly all of the commercial styrene is consumed in polymerization and copolymerization processes. Common methods in plastics technology such as mass, suspension, solution, and emulsion polymerization can be used to manufacture polystyrene and styrene copolymers with different physical characteristics, but processes relating to the first two methods account for most of the styrene polymers currendy (ca 1996) being manufactured (2—8). Polymerization generally takes place by free-radical reactions initiated thermally or catalyticaHy. Polymerization occurs slowly even at ambient temperatures. It can be retarded by inhibitors. 

Infinitely soluble in acetone, carbon tetrachloride, benzene, diethyl ether, / -heptane, and ethanol. ... 

Stannic Chloride. Stannic chloride is available commercially as anhydrous stannic chloride, SnCl (tin(IV) chloride) stannic chloride pentahydrate, SnCl 5H20 and in proprietary solutions for special appHcations. Anhydrous stannic chloride, a colorless Aiming Hquid, fumes only in moist air, with the subsequent hydrolysis producing finely divided hydrated tin oxide or basic chloride. It is soluble in water, carbon tetrachloride, benzene, toluene, kerosene, gasoline, methanol, and many other organic solvents. With water, it forms a number of hydrates, of which the most important is the pentahydrate. Although stannic chloride is an almost perfect electrical insulator, traces of water make it a weak conductor. 

In the case of symmetrical molecules such as carbon tetrachloride, benzene, polyethylene and polyisobutylene the only polarisation effect is electronic and such materials have low dielectric constants. Since electronic polarisation may be assumed to be instantaneous, the influence of frequency and temperature will be very small. Furthermore, since the charge displacement is able to remain in phase with the alternating field there are negligible power losses. 

The 1-phenyl-2-nitropropanol thus obtained is a colorless oil, specific gravity 1.14 at 20°C, odorless when pure, volatile with steam and boiling at 150° to 165°C under a pressure of 5 mm of mercury. It is soluble in alcohol, ether, acetone, chloroform, carbon tetrachloride, benzene and glacial acetic acid. The yield of 1-phenyl-2-nltropropanol obtained by this procedure is 17.1 to 17.7 kg. 

Oscik and Chojnacka [63] use TEC adsorption in the investigation of six aromatic hydrocarbons (naphthalene, diphenyl, anthracene, pyrene, chrysene, and acenaphthene) on silica gel G by elution with different binary mobile phases (trichloroethylene-benzene, carbon tetrachloride-benzene, n-heptane-trichloroethylene. 

Non-polar solvent Hexane Heptane Isooctane Cyclohexane Cyclopentane Carbon disulfide Carbon tetrachloride Benzene... 

Analogous investigations of deuteriated methanol were carried out on the OD-valency vibration roD = 2689 cm in CCI4 as the standard solvent (Tamres, 1952, Searless and Tamres, 1951). Altogether 12 aromatic compounds, including halogen-substituted ones, were used as solvents. In the series of solvents, carbon tetrachloride, benzene, toluene, 0-, m-, j-xylene and mesitylene, i/qd shifted from 2689 to 2670 in benzene and to 2655 cm in mesitylene. 

Sodium cyanide, Glacial acetic acid, Chlorine gas. Carbon tetrachloride Benzene, Aluminum chloride, 2-Chloroacetyl chloride. Hydrochloric acid. Sodium hydroxide. Methylene chloride. Calcium chloride. Hexanes Methanol, MalononitrUe, o-Chlorobenzaldehyde, Piperdine Tetrahydrofuran, Hydrogen chloride, Chloropicrin, Powdered tin Benzene, Arsenic trichloride. Aluminum chloride. Hexanes Acetone, Sulfuric acid. Chlorine, Calcium chloride Isopropylamine, Glyoxal, Diethyl ether Benzene, Pyridine, Diphenylamine, Arsenic trichloride Tetraethyl lead. Arsenic trichloride... 

Most polymers are synthesized in solution. The solvent could be water, carbon tetrachloride, benzene, or any number of aqueous or organic solvents. Many polymers are... 

Ivency or emulsification of beeswax, aqueous solubility, and vapor pressure are completely correlated with nematocidal efficacy as determined in laboratory tests. The correlation is not complete when field efficacy is considered. Thus carbon tetrachloride, benzene, and toluene should be good nematocides, but have not proved satisfactory in field tests. Likewise carbon disulfide, while a sound nematocide under optimum conditions, requires, for satisfactory nematode control, a greater quantity than would be expected on the basis of its solubilities and solvency. The answer may lie in the lack of polarity of these molecules. 

Killmann and Eckart65) were the first to determine adsorption enthalpies by calorimetry. They measured the enthalpies for poly(ethylene glycol) adsorbed from carbon tetrachloride, benzene, water, and methanol solutions onto finely grained silica. The obtained values increased linearly with adsorbance in the order methanol, water, benzene, and carbon tetrachloride. 

A piece of the material is boiled in a reflux apparatus successively with ether, carbon tetrachloride, benzene, and alcohol, the treatment being stopped when the waterproofing material passes into solution in one of the solvents. This may be tested by ascertaining if the material treated in this way and well dried in the air has lost its impermeability totally or in part, and also by evaporating the extract in a porcelain dish on a water-bath and examining the residue the latter should consist of oil or fat, tar or fatty acids. 

It is difficult (if not impossible) to satisfy all of these conditions, as evidenced by the differing experimental data obtained with solvents such as water, methanol, carbon tetrachloride, benzene, and other fluids. Thus, there is always the need to specify the liquid employed for the determination of density by means of this (pycnometer) method. Furthermore, a period of 24 hours may be necessary for the determination because of the need for the liquid to penetrate the pore system of the coal to the maximum extent. 

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