%0 Journal Article
%T The Enthalpies of Combustion and Formation of Cholesterol [cholest-5-en-3-ol (3 β )].
%A Johnson WH
%J J Res Natl Bur Stand A Phys Chem
%V 79
%N 3
%D May-Jun 1975
%M 32184510
暂无%R 10.6028/jres.079A.013
%X The enthalpy of combustion of cholesterol was measured in an adiabatic, rotating-bomb calorimeter capable of high precision with relatively small samples. The random error for the experimental measurements was 0.006 percent which may be compared with approximately 0.3 percent for prior investigations on this substance. The results obtained for the enthalpy of combustion and the derived enthalpy of formation together with the estimated overall uncertainties are:  Δ H c ° (  25 ° C ) = - 16524.0 ± 3.9  kJ/mol    Δ H f ° (  25 ° C ) = - 674.8 ± 4.1  kJ/mol   The results of prior investigations are discussed briefly.