Document Download: G7-04: Guideline on the Henry's Constant and Vapor-Liquid Distribution Constant for Gases in H2O and D2O at High Temperatures

Description

This guideline correlates the Henry's constant and vapor-liquid distribution constant for common gases in water and heavy water from the triple point to the critical point (see the document for details of range of data fitted). 
The gases included in H2O are He, Ne, Ar, Kr, Xe, H2, N2, O2, CO, CO2, H2S, CH4, C2H6, and SF6.
The gases included in D2O are He, Ne, Ar, Kr, Xe, D2, and CH4.
The development of the correlations and comparisons to available data are described in detail in a scientific article.

Online calculation

The Russian National Committee of IAPWS (through Moscow Power Engineering Institute) has provided an online calculation page, which may be useful in program development and verification. Note that IAPWS is not responsible for the content of these online calculation pages.

Revision History

• This Guideline was adopted by IAPWS in 2004, replacing a gas solubility guideline issued in 1993 and a distribution constant guideline issued in 1998.

This Guideline is the product of the Working Groups "Thermophysical Properties of Water and Steam" (TPWS) and "Physical Chemistry of Aqueous Systems" (PCAS) of the International Association for the Properties of Water and Steam (IAPWS).