JESS is the world's largest single source of thermodynamic information relating to electrolytes, reactions in aqueous media, and hydrocarbon phase equilibria. The full contents of certain databases are available to inspect online (click the links below to start browsing).
Reactions
  • 80,000 reactions
  • 226,000 equilibrium constants
  • 32,000 enthalpy values
Species
  • 4,700 primitive species
  • 63,000 composite species
  • 13,000 chemical names
  • 2,000 CAS Registry numbers
Literature
  • 31,000 literature references
  • 30,000 author names
  • 2,200 journals/publications
  • 6,000 keywords
The full JESS package also includes the following databases:
Physicochemical
Properties
  • 58 properties
  • 860 solutes
  • 500,000 property values
Electrolyte
Solubility
  • 2,200 soluble phases
  • 120,000 solubility records
Pitzer
parameters
  • 18,000 parameter values for aqueous electrolyte systems
Hydrocarbon
Solubility
  • Solid-liquid equilibria (SLE)
  • 22 natural gas components
  • 231 data sets (with contributions from Corey Baker and Eric F. May)