Tables of Chemical Data
Values of Fundamental Physical Constants
Relative Atomic Masses of the Chemical Elements
Molar Thermodynamic Properties of Pure Substances
Molar Thermodynamic Properties of Aqueous Solutes
Ionization Constants of Aqueous Monoprotic Acids
Ionization Constants of Aqueous Polyprotic Acids
Solubility Products of Slightly Soluble Salts
Stability Constants of Aqueous Complex Ions
Aqueous Standard Reduction Potentials
Auxiliary and Specific Tables of Chemical Data:
Half-Lives of Selected Radioactive Isotopes
Selected Gas-Phase Equilibrium Constants
Properties of Aqueous Acid-Base Indicators
See also http://www.intute.ac.uk/sciences/reference/chemdata/