Analytical Chemistry

Atomic and Molecular Physics

Biometrics

Biotechnology

Chemical and Crystal Structure

Chemical Kinetics

Chemistry

Communications

Construction

Environmental Data

Fire

Fluids

International Trade

Law Enforcement

Materials Properties

Mathematical Databases, Software and Tools

Optical Character Recognition

Physics

Product Design

Surface Data

Text and Video Retrieval

Thermophysical and Thermochemical

Updated Databases

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.

IUPAC-NIST Solubility Database (Web Version 1.0)

These solubilities are compiled from 11 volumes of the International Union for Pure and Applied Chemistry (IUPAC)- NIST Solubility Data Series. Typical solvents and solutes include water, seawater, heavy water, inorganic compounds, and a variety of organic compounds such as hydrocarbons, halogenated hydrocarbons, alcohols, acids, esters and nitrogen compounds. There are over 30,000 solubility measurements and over 800 references.

Steam Properties Database: Version 2.21

Based upon the new International Association for the Properties of Water and Steam (IAPWS) 1995 formulation for general and scientific use for the thermodynamic properties of water, this updated version provides water properties from the international standards over a wide range of conditions.

The thermophysical properties included in the STEAM Database are:

NIST Surface Structure Version 5.0

The Surface Structure Database (SSD) is the only complete critical compilation of reliable crystallographic information now available on surfaces and interfaces. SSD brings instant access to detailed text and graphical displays of over 1250 experimentally-determined atomic-scale structural analyses. Using the powerful, yet easy-to-use capabilities of SSD, scientists in physics, chemistry, and materials science can quickly and easily find the answer to such questions as:

• what adatom structures on compound semiconductors have been solved?
• what are the coordinates of the atoms at the CoSi2/Si interface?
• how many studies on Ag surfaces have appeared since 1980?
• do C-C bond lengths vary in adsorbed hydrocarbons?
• how do different surfaces of Si reconstruct?
• has the Al/GaAs (110) system been studied with LEED?

NIST Critically Selected Stability Constants of Metal Complexes: Version 8.0

Version 8.0 is a major enhancement to this widely used database which provides comprehensive coverage of interactions for aqueous systems of organic and inorganic ligands with protons and various metal ions and is based on the six-volume Critical Stability Constants by Martell and Smith. The new version contains 225 additional ligands, new data, data printing, rapid bibliography searching and more streamlined commands. New literature has resulted in revision and upgrading of 30% of previous data. Entire contents are critically selected for accuracy and consistency.

NIST/TRC VLE FloppyBook Database

This database comprises an extensive collection of data on vapor-liquid equilibria of binary and ternary mixtures. The database contains 30,107 records covering 1,352 substances. There are 7,672 data sets, representing 6,669 binary mixtures and 973 ternary mixtures from 6,167 original sources. The graphical interface provides a variety of means to search the database, including CAS Registry Number, elementary chemical formula, chemical names, or record number, and also textual searches of the database index (for author or journal names, for example.)