By the benson rule of group additivity

standard formation enthalpy \%Δ\%\-f\%H\%\+Φ\-m(298

g) and standard entropy \%S\%\+Φ\-m(298

g) of ricinoleic acid and its reaction products were estimated

and by the Rihani rule of group additivity

the relation between heat capacity for an ideal gas \%C\%\+Φ\-\{p

m\}(\%T\%) of each above substance and the temperature was estimated. The relations between standard enthalpy change \%Δ\%\-r\%H\%\+Φ\-m(\%T\%)

standard entropy change \%Δ\%\-r\%S\%\+Φ\-m(\%T\%)

standard Gibbs free energy change \%Δ\%\-r\%G\%\+Φ\-m(\%T\%) and standard equilibrium constant \%K\%\+Φ\-p(\%T\%) of various ricinoleic acid reactions and the temperature were respectively deduced. The deduced results can be used to analyze

control and optimize chemical reactions and chemical processes of ricinoleic acid.