Accession Number:

ADA188571

Title:

Evaluation and Prediction of Henry's Law Constants and Aqueous Solubilities for Solvents and Hydrocarbon Fuel Components. Volume 1. Technical Discussion

Descriptive Note:

Final rept. Feb 1985-Sep 1986

Corporate Author:

RESEARCH TRIANGLE INST (RTI) INST RESEARCH TRIANGLE PARK NC

Personal Author(s):

• Howe, G. B.
• Mullins, M. E.
• Rogers, T. N.

Report Date:

1987-09-01

Pagination or Media Count:

96.0

Abstract:

Laboratory measurements of Henrys law constants are reported for 51 chemicals, spanning a wide range of chemical structures and volatilities. A static headspace method Equilibrium Partitioning in Closed Systems, referred to as EPICS was used to measure Henrys Law Constant, with the standard batch air- stripping method used as a check. An average precision of 5 percent was obtained for the EPICS runs, and the Henrys law constants agreed reasonably wellwithin 10 percent with the batch air-stripping results and other reported experimental values. Measurements were conducted over a temperature range of 10-30 C, and the data were correlated with a temperature regression equation coupled with a temperature-dependent error term based on 95 percent confidence limits. The aqueous solubilities of the study compounds were also determined via the shake- flask method at temperatures of 10,20, and 30 degrees Celsius. Keywords Volatile organics, Solvents, Fuels, Henrys law constants, Aqueous solubilities, Air water distribution.

Descriptors:

• *FUELS
• *ORGANIC COMPOUNDS
• *SOLVENTS
• *SOLUBILITY
• MEASUREMENT
• TEMPERATURE
• WATER TREATMENT
• WATER POLLUTION
• LABORATORY PROCEDURES
• MOLECULAR STRUCTURE
• CONFIDENCE LIMITS
• AIR WATER INTERACTIONS
• EQUATIONS
• VOLATILITY
• CONTAMINANTS
• ERRORS
• HYDROCARBONS
• GROUND WATER
• TRANSPORT PROPERTIES
• REGRESSION ANALYSIS

Subject Categories:

• Physical Chemistry
• Air Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE