Characterization liquids

Another anhydrous solvent that is frequently used for the synthesis of tantalum and niobium fluoride compounds is bromine trifluoride, BrF3. At ambient temperature, bromine trifluoride is light yellow liquid characterized by a boiling point of 126°C, a melting point of 9°C and a density of 2.84 g/cm3 at melting temperature. 

New THG Methods For Molecular Liquid Characterization. An area which is essential for understanding general third-order nonlinear polarizability is characterization of the purely electronic contributions (48). Several methods have been employed for this... 

Ethylene glycol dinitrate (EGDN, GDN, or nitroglycol respectively) is a transparent liquid characterized by the following physical parameters freezing point —22.3 or —22.8°C boiling point 197.5, 105.5 (19 mm Hg) or 70°C (2 mm Hg) ... 

From the gas phase scattering data we conclude that a plane wave state for the electron in liquid helium lies at positive energy relative to the vacuum level in agreement with Sommers electron injection experiment. We proceed now to a semiquantitative treatment of free electron states in liquids characterized by a positive scattering length, which will be used to estimate the energy of interaction of a free electron with liquid helium (18). 

The coal liquids characterized at the Bartlesville Energy Technology Center previous to this study have come from different projects in which the primary objective was the development of a specific process. This precluded a systematic study of the relationship of coal rank to coal liquid composition, which is the objective of this study. 

The water in the system is modeled as a uniform continuum liquid, characterized by the relative permittivity (dielectric constant) D. 

Neat liquid methanol is an associated liquid characterized by an extended hydrogen bonding network (86,87). Much of the width of the broad O-H stretching transition is due to a distribution of hydrogen-bonded... 

With ammonia in absence of water lithium nitrate forms a liquid characterized by its lack of action on machine-steel, iron-wire, or nichrome-wire after contact for several months. It has been suggested that the addition of a small percentage of water would render the liquid a good absorbent for the removal of ammonia from mixtures of the gas with nitrogen and with hydrogen.3... 

More recently, natural amino acids have been used to develop room temperature ionic liquids in which the anion is the natural compound. In the first paper, published in 2005 by Ohno and coworkers, a new class of chiral ionic liquids was prepared starting from l-ethyl-3-methylimidazolium hydroxide and 20 different natural amino acids (Scheme 17). All of the resulting salts are transparent and nearly colorless liquids, showing a glass transition temperature ranging from -57 °C to 6 °C. Unfortunately, they are high viscous liquids characterized by a moderate thermal stability. 

Jin, M., 1995. A Study of Nonaqueous Phase Liquid Characterization and Surfactant Remediation. Ph.D. dissertation, University of Texas at Austin. 

Surface tension Measure for internal strength of liquids characterizing their wetting behavior of surfaces. Liquids with low surface tension disperse equally on surfaces, high surface tensions result in rolling off from the surface (e.g., mercury drops). 

For water, a liquid characterized by a discrete relaxation process in the temperature... 

This version of the thermal energy can be considered appropriate especially for liquids characterized by large values of the thermal expansion coefficient and subject to large pressure gradients this can be the case for microchannels in which large pressure drops per unit length are ordinary for low hydrauhe diameters. 

The nematic phase can be viewed as a liquid characterized by orientational order, i.e. the long axes of the molecules are aligned on average along one direction, defined by the director n. The nematic order parameter 5 is defined as ... 

Consider a drop of a transparent liquid, characterized by a low contact angle (a few degrees), deposited on a smooth and reflecting substrate. When such a drop is observed under a microscope, circular and concentric black fringes appear. These fringes are due to interference effects between the... 

Anon. (1982). Liquid characterics are fundamental to solid plastics, British Plastics and Rubber, Sept. 

The reaction is reversible. It is the reason why it must be carried out in concentrated sulfuric acid to fix water. Chromyl chloride, where chromium exhibits oxidation state +VI, oxidizes diphenylcarbazide into diphenylcarbazone and is simultaneously reduced to chromic ions Cr +, which react with the latter to yield the violet complex. It is interesting to point out that chromyl chloride is a readily volatile liquid that can be distilled. As a result, the formation of such a liquid characterizes the presence of chloride ions. 

A. E. Visser, J. G. Huddleston, J. D. Holbrey, R. D. Rogers, Hydrophobic n-alkyl-isoquinohnium ionic liquids Characterization, solvent properties, and use in separations, in Proceedings 224th Am. Chem. Soc. National Meeting 2002, ACS Washington, DC. 

The oil absorption parameter was calculated on the basis of the amount of dibutyl phthalate oil absorbed by the filler particles. This parameter can characterize the tendency of the filler to create own structure in elastomer matrix. The values of this parameter for modified fillers were, respectively 65,2 g/lOOg for MMT I.30E modified with octadecylamine, 78 g/lOOg for MMT 1.31 PS modified with octadecylamine and aminepropyltriethoxysilane, 72,1 g/lOOg for MMT 1.34 TCN. The montmorillonites modified with ionic liquids characterized the similar values of oil absorption parameters (MMT mod. ADDMA 75,2 g/lOOg, MMT mod. SDDMA 82,5 g/lOOg)... 

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