These data include the following: Please follow the steps below to select the data required. Water Scarcity is Set to Increase and Nonrenewable Groundwater Reserves May Disappear by 2050 Under a Business as Usual Scenario This report focuses on physical water scarcity, what is commonly referred to as demand-driven scarcity, or use-to-availability ratio. Accurate thermophysical properties are available for several fluids. Problems with integrating these data sets are exacerbated problems associated with the identification of chemical species: inconsistent nomenclature, ambiguous or erroneous references to third party registries, and inconsistent conventions for chemical formulas. Thermophysical Properties of Fluid Systems. The greatest technical challenge in the development of the WebBook is the integration of databases from multiple sources into a single collection of data. The many contributors to the WebBook are identified in the "credits" section of the web page at. The site also includes two special features: a set of interactive physical property models developed at the NIST Boulder labs and a group additivity based estimator for gas phase thermodynamic properties. It includes a variety of data from NIST and outside contributors. The NIST Chemistry WebBook was established in 1996 and has grown to encompass a wide variety of thermochemical, ion energetics, physical, solubility, spectroscopic, and chromatographic data. Research Activities and Technical Approach Distribute NIST data for chemical systems in manner that is convenient for NIST's customers.Objectiveĭevelop a web site that provides reliable and convenient access to NIST data on chemical systems. The NIST Chemistry WebBook is intended to help fulfill NIST's mission by distributing such data over the Internet. It is part of NIST's mission to distribute Standard Reference Data to scientists, engineers, educators, and the general public.
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