If you have only tried a name search, verify that the species is not in the database by conducting a chemical formula search. If that search fails, the species is not in the database.
If you cannot find the species in the database, it means that we have no data for it. The database only includes chemical species for which we have data.
There are many chemistry related sites on the internet. It is possible that one or more sites contain the data you need or provide an appropriate reference to the data in the literature. Chemistry related sites may be found through the use of search engines or an index of chemistry related sites.
The most comprehensive and reliable source of chemical and physical property data is the chemistry literature. In many cases a literature search may be the best option for finding this type of data.
The database currently consists mostly of organic compounds along with a few small inorganic compounds. Species are only included in the database if we have data for them.
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The atomic weights used in the data are those used by the original authors. The molecular weights displayed are computed using the 1993 IUPAC atomic weights.
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For saturated fluids, the fluid properties display applet will display properties for both the liquid and vapor phases. Properties for the liquid phase are denoted by a (l) after their name. Properties for the vapor phase are denoted by a (v) after their name. On some browsers the selectors for the X and Y axes of the plot will only display a limited number of items at a time. If this is the case, you may have to scroll the pop-up list from the selector to find the vapor phase properties which are at the bottom of the list.
The Washburn correction consists of reduction or correction of the results of a calorimetric process to standard states. Correction is made for the following:
- Compression of the condensed phase and gas phase species to 1 atm pressure
- Enthalpy of solution and of dilution of the product gases in the aqueous phase (e.g. HCl, 1:600)
- Vaporization of water because of the heat liberated by the reaction
- Any energy changes associated with non-isothermal reactions
More details on these corrections can be found on pages 72-74 of Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970.
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