Predicting Thermochemical Performance Of Materials Made Easier By NIST

Chemical manufacturers, material suppliers and researchers in science and industry now have a reportedly easy-to-use computer program for help in predicting the performance of chemicals in thier custody, including storage, shipping PS SERIES Spring Return Torque to 9,500 IN-LB @ 1500 PSI • Ultra-compact configurations • Fully adjustable • Mounts directly to valve flange " • N o backlash • Maintains position without drift • For most quarter turn rotary valves 1-800-327-2589 i 206/825-1601 CORPORATION FAX: 206/825-1603 225 BATTERSBYAVE«ENUMCLAW,WA 98022 US Pats 4741250,4881419.5027667 S corresponding internal'! p i l e n i l .

Circle 337 on Reader Service Card and use in the laboratory and manufacturing.

The PC database, Chemical Thermodynamic and Energy Release Program — known as CHETAH — is available from the National Institute of Standards and Technology (NIST), of the U.S. Department of Commerce.

CHETAH version 7.0 is a tool for estimating both thermochemical properties and predicting certain reactivity hazards associated with a pure chemical, a mixture of chemicals, or a chemical reaction. The program is designed to conveniently and accurately calculate properties such as heat capacity, enthalpy, entropy and Gibbs energy of reactions as a function of temperature at 298.15 degrees kelvin.

The CHETAH computer program was developed originally by a group of researchers and scientists in the American Society for Testing and Materials' Committee E-27 on Hazardous Potential of Chemicals.

CHETAH 7.0 is designed for any MS DOS or PC DOS computer using DOS 2.1 or greater and at least 512 kb of memory. To order CHETAH, version 7.0 — which costs $350 — contact the Standard Reference Data Program, A320 Physics Building, NIST, Gaithersburg, Md. 20899- 0001; tel: (301) 975-2208; fax: (301) 926-0416

Other stories from September 1994 issue


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