Diethyl carbonate, physical properties

The physical properties of cyanoacetic acid [372-09-8] and two of its ester derivatives are Hsted ia Table 11 (82). The parent acid is a strong organic acid with a dissociation constant at 25°C of 3.36 x 10. It is prepared by the reaction of chloroacetic acid with sodium cyanide. It is hygroscopic and highly soluble ia alcohols and diethyl ether but iasoluble ia both aromatic and aUphatic hydrocarbons. It undergoes typical nitrile and acid reactions but the presence of the nitrile and the carboxyUc acid on the same carbon cause the hydrogens on C-2 to be readily replaced. The resulting malonic acid derivative decarboxylates to a substituted acrylonitrile ... 

Butadiene is a noncorrosive, colorless, flammable gas at room temperature and atmospheric pressure. It has a mildly aromatic odor. It is sparingly soluble in water, slightly soluble in methanol and ethanol, and soluble in organic solvents like diethyl ether, ben2ene, and carbon tetrachloride. Its important physical properties are summarized in Table 1 (see also references 11, 12). 1,2-Butadiene is much less studied. It is a flammable gas at ambient conditions. Some of its properties are summarized in Table 2. 

Since the inception of nonaqueous electrolytes, a wide spectrum of polar solvents has been investigated, and the majority of them fall into either one of the following families organic esters and ethers. The most commonly used solvents from these families, along with their physical properties, are listed in Tables 1 and 2, respectively,where the melting temperature of diethyl carbonate (DEC) deserves special attention because a significant correction has been made recently. 

PHYSICAL PROPERTIES Colorless or white crystals vinegar odor soluble in water, acetone, carbon disulfide, benzene, ethanol, diethyl ether, carbon tetrachloride, chloroform MP (142-145°F, 61-63°C) BP (189°C, 372°F) SG (1.4) VD (3.26) ST (33 dynes/cm at 80 C) VP... 

PHYSICAL PROPERTIES Appearance and odor vary depending upon the specify organic arsenic compound. Physical properties of specific compounds are provided for illustrative purposes, (arsenic diethyl) liquid or oil BP (185-190 C, 365-374°F) DN (about 1.0 g/mL) SG (about 1.0). (arsenic dimethyl) colorless to yellow oily liquid MP (-6°C, 21.2°F) BP (186°C, 366.8°F) DN (1.15 g/mL) SG (1.15). (arsenoacetic acid) minute yellow needles does not melt below 260 C (500°F) decomposition begins at about 205°C (401 F) readily soluble in pyridine, dilute sodium carbon-ate and dilute sodium hydroxide solutions insoluble in water and common organic solvents. 

PHYSICAL PROPERTIES colorless, crystalline solid or pale-yellow mass dimorphic, having both crystalline and amorphous forms pungent, chlorine-like odor a liquid above 105°F (40.6°C) soluble in benzene, carbon tetrachloride, ethanol, and diethyl ether ... 

In another investigation of the comparative value of lipid and hydration hypotheses (Eger et aL 1969), the minimal anaesthetic concentrations of the following agents were plotted against the relevant physical properties carbon tetrafluoride, sulphur hexafluoride, nitrous oxide, xenon, cyclopropane, fluorexene (trifluoroethyl vinyl ether), diethyl ether, enflurane (see above), halothane, chloroform, and methoxyflurane (see above). (These anaesthetics have been arranged here in order of increasing lipid/water solubility.) The results of this study showed an excellent correlation between... 

Chemical Designations — Synonyms Carbonic Acid Diethyl Ester Ethyl Carbonate Eufin Chemical Formula (CH3CH2)2COj. Observable Characteristics — Physical State (as normally shipped) Liquid Color Colorless Odor Pleasant, etheral mild and nonresidual. Physical and Chemical Properties — Physical State at 15"C and 1 atm. Liquid Molecular Weight 118.13 Boiling Point at 1 atm. 260.2, 126.8, 400 Freezing Point -45, -43, 230 Critical Temperature Not pertinent Critical Pressure Not pertinent Specific Gravity 0.975 at 20"C (liquid) Vapor (Gas) Density Not pertinent Ratio of Specific Heats of Vapor (Gas) 1.110 Latent Heat of Vaporization 130, 73, 3.1 Heat of Combustion -9,760, -5,420,... 

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