NIST Standard
Reference Subscription Database 3
Web Thermo Tables (WTT) - Professional Edition
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. References to experimental data sources and information
and methodology related to the evaluations can be found in these hard-copy
publications:
TRC Thermodynamic
Tables - Hydrocarbons
Editor M. Frenkel
National Institute of Standards and Technology
Boulder, CO
Standard Reference Data Program
Publication Series NSRDS-NIST- 75 (1942-2007)
Gaithersburg, MD
TRC Thermodynamic Tables - Non-Hydrocarbons
Editor M. Frenkel
National Institute of Standards and Technology
Boulder, CO
Standard Reference Data Program
Publication Series NSRDS-NIST- 74 (1955-2007)
Gaithersburg, MD
Various search options
based on compound information (empirical formula, partial name, molecular
weight) as well as specific property requests are provided. Data presentation
features an interactive Web interface with hierarchical expanding/contracting
tabular panel structure. Interactive data plotting capabilities are also
provided. Unlimited data retrieval and their local storage and use are
permitted.
Evaluated properties
that appear in the WTT are (note that all listed properties are not necessarily
available for all included compounds):
Critical properties
* Critical temperature
* Critical pressure
* Critical density
* Critical molar volume
* Critical compressibility factor
Vapor Pressure and
Boiling Temperatures
* Normal boiling temperature
* Vapor pressure
Phase Transition
Properties
* Triple point temperature
* Normal freezing temperature
* Enthalpy of vaporization
* Enthalpy of phase transition
* Entropy of vaporization
* Entropy of phase transition
Volumetric Properties
* Specific density
* Adiabatic compressibility
* Compressibility factor
* Second virial coefficient
Heat Capacities and
Derived Properties
* Heat capacity at constant pressure
* Heat capacity at saturation
* Enthalpy
* Enthalpy function
* Entropy
* Entropy function
Transport Properties
* Viscosity
* Kinematic viscosity
* Thermal conductivity
Reaction State-Change
Properties
* Enthalpy of formation
* Gibbs energy of formation
* Enthalpy of combustion
Refraction, Surface
Tension, and Speed of Sound
* Refractive index
* Surface tension
* Velocity of sound
Complimentary WTT-Pro data availability information (specific properties
for a given compound, parameter ranges, number of points) can be accessed
at http://wtt-pro.nist.gov.
Click to view the subscription License
Agreement before ordering.
Pricing
Information:
Access to WTT - Professional
Edition is subscription-based; the annual license fees are listed below:
 Individual
License: $1200,
Upgrade from print edition: $900
Small
Institution (2 to 500 users): $1800, Upgrade
from print edition:$1350
Medium
Institution (501 to 2000 users): $2300, Upgrade
from print edition: $1725
Large
Institution (2001+ users): $2500,
Upgrade from print edition:$1875
See http://www.nist.gov/srd/dblist.htm for discounts for current subscribers
of the hard copy version of the TRC Tables.
For
more information please contact:
- Standard Reference
Data Program
National Institute of Standards and Technology
100 Bureau Dr., Stop 2300
Gaithersburg, MD 20899-2300
(301) 975-2208
(VOICE) / joan.sauerwein@nist.gov (E-Mail) / (301) 926-0416 (FAX) / Contact
Us
The
scientific contact for this database is:
Dr. Michael Frenkel,
Director
Thermodynamics Research Center (TRC)
NIST Physical and Chemical Properties Division (838)
325 Broadway Mailcode 838.00
Boulder, CO 80303-3328
frenkel@boulder.nist.gov
(303) 497-3952 Phone
Web Address to TRC http://www/trc.nist.gov
-
Keywords:thermodynamics,
thermophysics, recommended data, critically evaluated data, thermophysical
properties, TRC, Thermodynamics Research Center
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