THIS PRODUCT HAS BEEN REPLACED BY DS51E.

The latest version of the CHETAH® program is a vital resource for predicting both thermochemical properties and certain reactive chemical hazards associated with a pure chemical, a mixture of chemicals, or a chemical reaction. This is accomplished through knowledge of only the molecular structure of the component involved by an implementation of Benson's method of group additivity. CHETAH® is useful for classifying materials for their ability to decompose with violence, estimating heats of reaction or combustion, and for predicting certain flammability properties such as lower flammable limits and limiting oxygen concentrations. CHETAH® also conveniently and accurately calculates several important properties such as ideal gas heat capacity, enthalpy of formation, entropy, and Gibbs free energy of formation.

CHETAH® not only predicts potential hazards, but is widely used in the reactive chemicals evaluation programs of personnel responsible for ensuring safe operations at research, process development, and manufacturing sites.

What's New in CHETAH 8.0?
Version 8.0 has a greatly expanded capability to do flammability calculations. The program can now calculate:
• Lower Flammable Limit (LFL) for pure chemicals or mixtures using two different highly respected methods (Bothwell's Method and Britton's Method). Lower Flammable Limits can now be calculated at other temperatures besides 298 K.
• Limiting oxygen concentration (LOC) for pure chemicals or mixtures.
• Minimum Ignition Energy (MIE).
• Lower Limit Flame Temperature (LLFT).
• Maximum Flame Temperature (Tmax).
• Fundamental Burning Velocity (Su).
• Quenching Distance (qd).

In addition, CHETAH 8.0 has other enhancements:
• 70 new Benson groups to expand the range of chemicals that can be calculated
• Easy cut, paste, and editing of programs output into Microsoft Word and Excel.
• New attractive interface design for ease of use
• Structural drawings of Benson ring corrections now available

System requirements: CD drive and hard disk with 9 megabytes of available space, Windows 98, 2000, 2003, ME, XP, and Windows NT 3.51 or later.

Bonus: Conveniently packaged with CHETAH 8.0 is the Chemical Reactivity Worksheet by NOAA. This chemical database includes reactivity information for more than 6000 common hazardous chemicals. Virtually "mix" chemicals to find out what dangers could arise. Select chemicals from the database by name or by using their CAS numbers and add them to the mixture.