Version 7.2 of the ASTM CHETAH computer program was issued in 1998. This version, the successor to Version 7.0, provides a convenient spread-sheet style means for estimating the standard heat of formation of chemical compounds by use of the Benson group additivity system. The program also provides means for estimating the value of several additional thermochemical parameters including heat of combustion, heat capacity, heat of reaction to form most stable products, and the thermochemistry of balanced reactions. The program includes a library of thermochemical properties for selected organic and inorganic compounds. Most options, including the Print command, are now accessed via mouse-activated buttons. The report forms have been simplified and improved.
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