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(physical chemistry)
The ability of a substance to form a solution with another substance.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



the ability of one substance to combine with another and form a homogeneous, thermodynamically stable system of variable composition made up of two or more components. These systems are formed upon interaction of gases with liquids, liquids with liquids, and other similar combinations. The ratios of the components to one another may be either arbitrary or restricted within certain limits. In the latter case, the solubility is said to be limited.

The solubility of a substance under given conditions is determined from the substance’s concentration in a saturated solution. The solubility of various substances in a specific solvent depends on external conditions, mainly on the temperature and pressure. The effect of pressure on solubility is most pronounced with gases. A change in external conditions affects solubility in accordance with the principle of equilibrium shift (see LECHÂTELiER’S PRINCIPLE). Solubility charts of various substances have been compiled for the most important solvents. Such charts either express solubility as a function of external conditions or simply list the solubility under standard conditions.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
This increase in activity is due to the reduction in particle size and higher aqueous solubility. Owing to such behavior the constituents of the extract can enter yeast cells at a higher rate and extent, thereby facilitating glucose utilization within the cell.
nitric acid generated high density hydrophilic carboxylic acid and hydroxyl groups on wsCNDs surface and therefore introduces aqueous solubility along with photoluminescent properties.
Complexation improves the aqueous solubility and thermal and acid stabilities of ciprofloxacin, cloxacillin, and amoxicillin.
Due to the inherent aqueous solubility of BAs, the compression isotherms do not reflect the behavior of a stable film and their thermodynamic analysis is not plausible.
The membrane is suitable for applications including natural product screening, aqueous solubility testing and total drug analysis.
The partitioning of each of the individual chemicals between the water and the sediment compartments is governed by many factors, including aqueous solubility, sediment binding, pH, and temperature.
Low-polarity organic contaminants, such as polychlorinated biphenyls (PCBs) and polyaromatic hydrocarbons (PAHs), are very persistent in the environment due to their low aqueous solubility and poor bioavailability.
2), their aqueous solubility was lower than that of isobutyryl thiocholine as shown in Table 2.
Buss said his firm suspects the deeper TCE represents a dense nonaqueous phase liquid (DNAPL) because "concentrations found in wells had values that were greater than 1% of the aqueous solubility limit for TCE."
Therefore, it is very important to find appropriate formulation approaches to enhance the aqueous solubility, dissolution rate, and thus the bioavailability of poorly soluble drugs.
But in its practical application, the poor aqueous solubility and heat stability of sesamol is also noticed which restricts its application fields and decrease the bioavailability.