It is shown that it is not correct to estimate energetic characteristics of different compounds of solid composite propellants by evaluation of the specific impulse values of these components serving as an only component in the formulation.Such an approach may turn the researcher to a wrong conclusion.One has to compare compound′s potential in formulations close to real,e.g.at least with necessary amount of binders.Dependences of specific impulse upon element content of highenthalpy CHNO oxidizer,its enthalpy of formation,and kind of binder have been found. It is shown that it is not correct to estimate energetic characteristics of different compounds of solid composite propellants by evaluation of the specific impulse values ​​of these components serving as an only component in the formulation.Such an approach may turn the researcher to a wrong conclusion. One has to compare compound’s potential in formulations close to real, egat least with necessary amount of binders. Dependences of specific impulse upon element content of highenthalpy CHNO oxidizer, its enthalpy of formation, and kind of binder have been found.