Vapor pressure Henry’s law constant

Shiu, W.-Y., Mackay, D. (1986) A critical review of aqueous solubilities, vapor pressures, Henry s law constants, and octanol-water partition coefficients of the polychlorinated biphenyls. J. Phys. Chem. Ref. Data 15, 911-929. 

TABLE 4.1.1.19.1 Reported vapor pressures and Henry s law constants of acenaphthlyene at various temperatures and the coefficients for the vapor pressure equations Vapor pressure Henry s law constant ... 

Hinckley, D.A. (1989) Vapor Pressures, Henry s Law Constants and Air-Sea Gas Exchange of Selected Organochlorine Pollutants. Ph.D. Thesis, University of South Carolina. 

Predicting sorption coefficients and hence the mobility of organic pollutants in aqueous-solid systems requires complete knowledge and analysis of various physical and chemical properties of such pollutants. This includes properties such as solubility, equilibrium vapor pressure, Henry s law constant, partition coefficient, as well as pKa and pKb values. Such properties can initially help determine the sorption-desorption behavior of organic pollutants once they are released, directly and/or indirectly, to the aqueous environment and then are in direct contact with solid phases. The following sections briefly summarize these properties. 

Water at OC Organic solvents Partition coefficients Vapor pressure Henry s law constant Autoignition temperatture... 

Table 23.1 Water solubilities, vapor pressures, Henry s Law constants, and pKa values of currently used triazine herbicides...

Reported aqueous solubilities, vapor pressures, Henry s law constants and octanol-air partition coefficients of 2,2, 4,5,5 -pentachlorobiphenyl (PCB-101) at various temperatures and the reported empirical temperature dependence equations... 

Vapor pressure Henry s law constants Autoi gni ti on temperature FIashpoi nt FIammabi1i ty limits... 

TABLE 11.2.2 Summary of selecte Compound d physical-chemical properties of alcohols at 25°C Selected properties Solubility Vapor pressure Henry s law constant H/(PamVmol) expti (a) expti (b) expti (c)... 

TABLE 13.1.1.6.1 (Continued) Vapor pressure Henry s law constant... 

Physical - chemical QSAR models are available to predict a range of chemical properties including melting point, boiling point, water solubility, biodegradability, vapor pressure, Henry s law constant, sediment adsorptivity, octanol-water partition coefficient, and half-life in the environment. These and other parameters can be readily predicted by EPISUITE (see Relevant Websites section), and enables batch data entry based on Chemical Abstract Service (CAS) numbers or SMILES notations. 

Physical and Chemical Properties. More experimental and estimated data on the physical and chemical properties for 2,4-DNP are available than for other dinitrophenols (see Table 3-2). Even in the case of 2,4-DNP, reliable experimental or estimated values are not available for vapor pressure, Henry s law constant, and log K°<=. This is not surprising since dinitrophenols exist predominantly in the ionic forms at pH >6 with very low vapor pressure. If available, the physical constants are important in predicting the environmental transport of dinitrophenols. Therefore, it would be helpful to develop more reliable data on certain physical properties important in predicting the environmental fate of these compounds. 

Physical and Chemical Properties. The physical and chemical properties (K Ko<=, vapor pressure, Henry s law constant, etc.) have been sufficiently characterized for most of the 17 PAHs and allow prediction of their environmental fate. 

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