Standard Reference Data, NIST:
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The NIST Standard Reference Data Group is continuously adding to its sets of evaluated numeric data by updating current databases and developing new databases. The interactive access, available for many products, is also updated on a regular basis.
NIST 08 includes a fully evaluated collection of electron-ionization mass spectra. It is the product of a 21-year effort by a team of experienced mass spectrometrists in which each spectrum has been examined for correctness. This release contains an expanded MS/MS Library and new Retention Index data.What's New in v.2.0g distributed with NIST 11
Version 9.0 expands the capability of the REFPROP database.
New features include:
Additional pure fluids and updated equations of state and transport equations, including cyclopentane, R-1234yf, and R-1234ze(E).
The number of binary mixtures with interaction parameters has increased from 303 to 639, including many mixtures of ethylene, propylene, methanol, ethanol, toluene, benzene, cyclohexane, sulfur dioxide, ammonia, dodecane, acetone, and butylene.
Expanded support for natural gas systems, including the addition of the GERG-2008 mixture model for natural gas fluids, which includes binary interaction parameters for the following fluids: argon, butane, carbon monoxide, carbon dioxide, decane, ethane, helium, heptane, hexane, hydrogen, hydrogen sulfide, isobutane, isopentane, methane, nitrogen, nonane, octane, oxygen, pentane, propane, and water.
Convergence along the saturation lines is now better for complex mixtures due to new algorithms for finding phase boundaries and the addition of analytical derivatives in the calculation of the fugacity.
Calculation of net and gross heating values for natural gas systems.
Additional pure fluid equations can be loaded in memory that are not included in a selected mixture.
New plots that show deviations between the GERG-2008 equation and the AGA-8 natural gas mixture models.
WTT - Professional Edition, a Web version of the TRC Thermodynamic Tables, represents a complete collection of critically evaluated thermodynamic property data primarily for pure organic compounds. As of September, 2007, WTT contains information on 7765 compounds.