Thermodynamic data presentation
Thermodynamic properties of organic compounds

The last three columns give, respectively, the standard enthalpy of formation (Δ_fH°), the standard entropy (S°) and the standard heat capacity $\left(c_p^{\text{o}}\right)$ of the compound under consideration at 25 ˚C.

The standard enthalpy of formation (Δ_fH°) of a compound with the general formula: C_αH_βN_γO_δS_ε is the enthalpy of the reaction :

If the organic compound contains a halogen (F, Cl, Br, I), the standard halogen state is considered to be I₂ solid for iodine, Br₂ liquid...