Solvent constituent

Apart from paints, electrokinetic separations find limited application for synthetic polymers [905], mainly because of solvent compatibility (CE is mostly an aqueous technique) and competition of SEC (reproducibility). Reasons in favour of the use of CE-like methods for polymer analysis are speed, sample throughput and low solvent consumption. Nevertheless, CE provides some interesting possibilities for polymer separation. Electrokinetic methods have been developed based on differences in ionisation, degree of interaction with solvent constituents, and molecular size and conformation. 

Not only components from the set A,...,N can interfere with the analytes but also additional species which may be partly unknown or will be formed during the measuring process. Such situations occur especially in ICP-MS, where the signal of an isotope A, may be interfered by isotopes of other elements, Bj, Q etc., and additionally by molecule ions formed in the plasma (e.g., argon compound ions and ions formed from solvent constituents). 

Amyl acetates are dangerous when exposed to flame or heat. When heated they emit acrid fumes. Their explosive hazard is moderate(Ref 8). Toxicity is discussed in Refs 6 8. Ritter et al(Ref 3a) detd the temp at which mixts of air with satd vapor of amyl ace.tate(in contact with some of the liq) in a stoppered flask are explosive. Pressure of expln was also detd. Amyl acetates are used for the manuf of fruit essences and as high-boiling solvent constituents of lacquers and other coating materials(Refs 5 ... 

The waste contains less than 1 percent total of FOO1-F005 solvent constituents. 

In xylene mixtures (15-20%) paint industry insecticide sprays petrol blends production in the styrene and acetophenone, solvent constituent of asphalt and naphtha 3511,3512,3521 354,38... 

Inserting expressions (21)—(23) into eq 17 leads to the following expression relating the Henry constant in a ternary mixed solvent to those in two binaries of the solvent constituents and their molar volumes ... 

Impaired effectiveness with real matrices owing to competitive side reactions with, or inhibition by, matrix and/or solvent constituents. Pyrolysis temperatures often happen to be lower than those established with simple aqueous solutions. 

Le Chatelier-Shreder equation, which is valid for the case of ideal solutions, i.e. for the solutions, where the interactions between the dissolved particles and between the solvent constituents are close to that between the solvent and the dissolved substance. 

If the substance moves too slowly, increase the solvent constituent favoring solubility of the solute. If the solute moves near the solvent front, increase the other solvent. 

TLC solvent constituents and ratios can be varied to alter separation conditions. For example, using chloroform methanol water 65 25 4, as solvent separates phospholipids and hexane diethylether acetic acid 70 30 1 separates neutral lipids. 

Uses Solvent constituent of industrial cleaners, deodorants solvent in cosmetics... 

Liquids vary in their rate of evaporation. Naturally in a mixture of liquids, some evaporate more rapidly than others. For example, if the solvent constituent of a lacquer evaporates more rapidly than the diluent, the limit of tolerance of the residual mixture is exceeded and gelling or precipitation occurs. As evaporation goes on, gigantic molecular reactions take place. Vast numbers of molecules change places as the new aggregates are formed. Some are... 

Uses Solvent constituent of industrial cleaners, deodorants solvent in cosmetics Trade Name Synonyms Solvenol 2 [Hercules http //www.herc.com] Hercules Ltd]... 

Dry, V—To change the physical state of an adhesive or an adherend by the loss of solvent constituents by evaporation, absorption, or both. 

Dry vt. To change the physical state of an adhesive on an adherend by the loss of solvent constituents by evaporation or absorption, or both. A film is considered dry when it feels firm to the finger, using moderate pressure. See also cure and set. 

Although the viscosity of the slurry itself cannot be varied significantly, by leaving the prepared slurry to stand under reduced pressure, the air phase in the slurry is eliminated while the solvent constituents are driven off, making it possible to control the viscosity. 

A dry technique for production and purification of metal fluorides, their mixtures, and fusion cakes without gaseous HF was also used in material studies for conversion of UO2 and Th02 to anhydrous tetrafluorides and for the removal of impurity oxide compounds from major solvent constituents [1]. Heating of these mixtures is accompanied by successive reactions of synthesis and decomposition. The total chemical reaction can be described by the equation ... 

Because the DIN operates at 100% efficiency, a significant solvent load is introduced into the plasma. This can result in increased interferences from molecular compounds formed from solvent constituents. Detection limits achieved by this method are equivalent to or better than those obtained by other nebulization techniques. 

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