CHNOSZ: Chemical Thermodynamics and Activity Diagrams

Functions and data sets to support chemical thermodynamic modeling in biochemistry and low-temperature geochemistry. The features include calculation of the standard molal thermodynamic properties and chemical affinities of reactions involving minerals and/or biomolecules; a database of thermodynamic properties of aqueous, crystalline and gaseous species; amino acid group additivity for the standard molal thermodynamic properties of neutral and ionized proteins; use of the revised Helgeson-Kirkham-Flowers equations of state for aqueous species; construction of equilibrium activity diagrams as a function of temperature, pressure, and chemical activities or fugacities of basis species.

Version: 1.0.7
Depends: R (≥ 3.1.0)
Imports: grDevices, graphics, stats, utils
Suggests: limSolve, testthat, knitr
Published: 2015-11-20
Author: Jeffrey Dick
Maintainer: Jeffrey Dick <j3ffdick at>
License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
NeedsCompilation: yes
Citation: CHNOSZ citation info
Materials: NEWS
In views: ChemPhys
CRAN checks: CHNOSZ results


Reference manual: CHNOSZ.pdf
Vignettes: Equilibrium in CHNOSZ
Hot-spring proteins in CHNOSZ
An introduction to CHNOSZ
Winding journey down (in Gibbs energy)
Package source: CHNOSZ_1.0.7.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
OS X Snow Leopard binaries: r-release: CHNOSZ_1.0.5.tgz, r-oldrel: CHNOSZ_1.0.5.tgz
OS X Mavericks binaries: r-release: CHNOSZ_1.0.7.tgz
Old sources: CHNOSZ archive

Reverse dependencies:

Reverse imports: ecipex