NIST Data Gateway providing easy access to collections of NIST standard reference data NIST Home Page
Gateway Home
Search by: [Keyword] [Property] [Substance Name]
[JPCRD]    Help  
NIST Standard Reference Data
NIST Free Online Databases
+ List
+ Descriptions
Databases for Purchase
+ PC Products
+ Online Subscription Databases
+ New Phase Equilibria Diagrams - Order Now!
Feedback/Comments
Version History
Privacy Policy/Security
Notice/Accessibility Statement
NIST Disclaimer
Copyright for NIST Standard Reference Data is governed by the Standard Reference Data Act
NIST Online Databases
All of the following online databases are free, except for a few which require subscriptions as indicated.

AnthroKids - Anthropometric Data of Children (Web, free access)
Anthropometric Data of Children displays the results of two studies on anthropometric data of children.
SRD 112 Atlas of the Spectrum of a Platinum/Neon Hollow-Cathode Lamp in the Region 1130-4330 Å (Web, free access)  Keywords for Database
Atlas of the Spectrum of a Platinum/Neon Hollow-Cathode Lamp in the Region 1130-4330 Å contains wavelengths and intensities for about 5600 lines in the region 4330 Å. An atlas plot of the spectrum is given, with the spectral lines marked and their intensities, wavelengths, and classifications listed.
SRD 141 Atomic Reference Data for Electronic Structure Calculations (Web, free access)
Atomic Reference Data for Electronic Structure Calculations contains total energies, partial energies and orbital eigenvalues for the atoms hydrogen through uranium, as computed in several standard variants of density-functional theory, both non-relativistic and relativistic. This data has been calculated to micro-Hartree accuracy to provide a benchmark for electronic structure calculations.
SRD 78 NIST Atomic Spectra Database (ASD) (Web, free access)  Keywords for Database
This database provides access and search capability for NIST critically evaluated data on atomic energy levels, wavelengths, and transition probabilities that are reasonably up-to-date. The NIST Atomic Spectroscopy Data Center has carried out these critical compilations.
SRD 109 Atomic Spectral Line Broadening Bibliographic Database (Web, free access)  Keywords for Database
This interactive database, maintained by the NIST Atomic Spectroscopy Data Center, contains more than 6000 references, dating from 1889 through current year and is updated regularly in intervals between one and four weeks. These references pertain to publications that include numerical data, general information, comments, and reviews on atomic line broadening and shifts.
Atomic Spectroscopy Databases (Web, free access)
These databases are maintained by the Quantum Measurement Division of the NIST Physical Measurement Laboratory. They provide information on various aspects of atomic spectra. Some of them contain numerical data on energy levels, wavelengths, line intensities, and transition probabilities, and some contain bibliographic data.
SRD 110 Atomic Transition Probability Bibliographic Database (Web, free access)  Keywords for Database
This interactive database, maintained by the NIST Atomic Spectroscopy Data Center, contains more than 8000 references, dating from 1914 through current year and is updated regularly in intervals between one and four weeks. These references pertain to publications that include numerical data, comments, and reviews on atomic transition probabilities, oscillator strengths, line strengths, and radiative lifetimes.
SRD 144 Atomic Weights and Isotopic Compositions (Web, free access)  Keywords for Database
The atomic weights are available for elements 1 through 111, and isotopic compositions or abundances are given when appropriate.
Basic Linear Algebra Computations in Java (JAMA) (Web, free access)
JAMA is a basic linear algebra package for Java. It provides user-level classes for constructing and manipulating real, dense matrices.
SRD 169 Bibliographic Database on Atomic Energy Levels & Spectra (Web, free access)  Keywords for Database
This interactive database, maintained by the NIST Atomic Spectroscopy Data Center, contains more than 18000 references, dating from 1802 through current year and is updated regularly in intervals between one and four weeks. These references pertain to atomic structure and transition wavelengths involving electrons in the outer shells of free atoms and atomic ions, or from inner shell excitations corresponding to frequencies up to the soft x-ray range.
SRD 125 Bibliography of Photon Total Cross Section (Attenuation Coefficient) Measurements (Web, free access)
Bibliography of Photon Total Cross Section (Attenuation Coefficient) Measurements includes papers reporting absolute measurements of photon (XUV, x-ray, gamma-ray, bremsstrahlung) total interaction cross sections or attenuation coefficients for the elements and some compounds. They cover the period from 1907 through 1995.
Biofuel Database (Web, free access)  Keywords for Database
This database brings together structural, biological, and thermodynamic data for enzymes that are either in current use or are being considered for use in the production of biofuels.
SRD 21 Biological Macromolecule Crystallization Database (Web, free access)  Keywords for Database
The Biological Macromolecule Crystallization Database and NASA Archive for Protein Crystal Growth Data (BMCD) contains the conditions reported for the crystallization of proteins and nucleic acids used in X-ray structure determinations and archives the results of microgravity macromolecule crystallization studies.
NIST Center for Nanoscale Science and Technology (Program website, free access)  Keywords for Database
Currently there is no database matching your keyword search, but the NIST Center for Nanoscale Science and Technology website may be of interest. The Center for Nanoscale Science and Technology enables science and industry by providing essential measurement methods, instrumentation, and standards to support all phases of nanotechnology development, from discovery to production.
SRD 151 Ceramics WebBook (Web, free access)
The Ceramics WebBook is an gateway to evaluated data, a guide to data centers and sources and a repository for tools and resources for ceramics.
SRD 155 Chem-Blast Gateway for PDB Ligands (Web, free access)  Keywords for Database
The database is expected to act as a gateway for the ligands in the PDB
SRD 17 NIST Chemical Kinetics Database (Web, free access)  Keywords for Database
The NIST Chemical Kinetics Database includes essentially all reported kinetics results for thermal gas-phase chemical reactions. The database is designed to be searched for kinetics data based on the specific reactants involved, for reactions resulting in specified products, for all the reactions of a particular species, or for various combinations of these. In addition, the bibliography can be searched by author name or combination of names. The database contains in excess of 38,000 separate reaction records for over 11,700 distinct reactant pairs. These data have been abstracted from over 12,000 papers with literature coverage through early 2000.
SRD 69 NIST Chemistry WebBook (Web, free access)  Keywords for Database
The NIST Chemistry WebBook contains: Thermochemical data for over 7000 organic and small inorganic compounds; thermochemistry data for over 8000 reactions; IR spectra for over 16,000 compounds; mass spectra for over 33,000 compounds; UV/Vis spectra for over 1600 compounds; electronic and vibrational spectra for over 5000 compounds; constants of diatomic molecules(spectroscopic data) for over 600 compounds; ion energetics data for over 16,000 compounds; thermophysical property data for 74 fluids.
CIS2 Visual Interoperability Testbed (Web, free access)
CIS2 Visual Interoperability Testbed translates a CIS2 file (CIMsteel Integrations Standards) of a steel structure into a 3D interactive model in the form of a VRML (Virtual Reality Modeling Language) file. The translator is part of the research in developing a mapping between VRML prototypes and CIS2.
SRD 156 Clathrate Hydrate Physical Property Database (Web, free access)  Keywords for Database
This database contains benchmark results for simulation of plasma population kinetics and emission spectra.
SRD 101 NIST Computational Chemistry Comparison and Benchmark Database (Web, free access)  Keywords for Database
The NIST Computational Chemistry Comparison and Benchmark Database is a collection of experimental and ab initio thermochemical properties for a selected set of molecules. The goals are to provide a benchmark set of molecules for the evaluation of ab initio computational methods and allow the comparison between different ab initio computational methods for the prediction of thermochemical properties.
Computer Forensics Tool Testing (CFTT) Project Web Site (Web, free access)
The CFTT is designed to provide a measure of assurance in the results of investigations based on automated tools used in computer forensics examinations.
Cryogenic Materials Property Database (Web, free access)  Keywords for Database
This database contains cryogenic material property data
Database for Resistivity Check Standard (Web, free access)
The database outlines the analysis of check standard data with respect to controlling the precision and long-term variability of the process.
NIST Dataplot (Web, free access)
Dataplot is a free, public-domain, multi-platform (Unix, VMS, Linux, Windows 95/98/ME/XP/NT/2000, etc.) software system for scientific visualization, statistical analysis, and non-linear modeling.
SRD 114 Diatomic Spectral Database (Web, free access)  Keywords for Database
All of the rotational spectral lines observed and reported in the open literature for 121 diatomic molecules have been tabulated. The isotopic molecular species, assigned quantum numbers, observed frequency, estimated measurement uncertainty, and reference are given for each transition reported.
Dictionary of Algorithms and Data Structures (Web, free access)
Dictionary of Algorithms and Data Structures is a dictionary of algorithms, algorithmic techniques, data structures, archetypical problems, and related definitions. Some entries have links to further information and implementations.
SRD 107 Electron-Impact Ionization Cross Section Database (Web, free access)  Keywords for Database
This is a database primarily of total ionization cross sections of molecules by electron impact. The database also includes cross sections for a small number of atoms and energy distributions of ejected electrons for H, He, and H2. The cross sections were calculated using the Binary-Encounter-Bethe (BEB) model, which combines the Mott cross section with the high-incident energy behavior of the Bethe cross section. Selected experimental data are included.
SRD 105 Elemental Data Index (Web, free access)
The Elemental Data Index provides access to the holdings of the NIST Physics Laboratory online data organized by element. It is intended to simplify the process of retrieving online scientific data for a specific element.
SRD 142 Energy Levels of Hydrogen and Deuterium (Web, free access)  Keywords for Database
This database provides theoretical values of energy levels of hydrogen and deuterium for principle quantum numbers n = 1 to 200 and all allowed orbital angular momenta l and total angular momenta j. The values are based on current knowledge of the revelant theoretical contributions including relativistic, quantum electrodynamic, recoil, and nuclear size effects.
Engineering Statistics Handbook (Web, free access)
The Engineering Statistics Handbook details numerous methods to help scientists and engineers incorporate statistical methods in their work.
Facial Recogniion Technology Database (Web, free access)
The Facial Recognition Technology (FERET) Database provides automatic face recognition capabilities that could be employed to assist security, intelligence and law enforcement personnel in the performance of their duties.
Finite Element Modeling of Materials with Complex Microstructure (OOF) (Web, free access)
This program is designed to help materials scientists calculate macroscopic properties from images of real or simulated microstructures.
Fire Modeling Programs (Web, free access)
These fire simulation programs were developed or sponsored by the Fire Research Division. The list of programs is divided into two broad categories below: currently-supported software and archival (unsupported) software. In order to get further information or to obtain one of the programs, click on the appropriate name.
Fire on the Web (Web, free access)
Fire on the Web is a collection of resources from the Building and Fire Research Laboratory's Fire Research Division at NIST. These Web pages provide links to fire related software, experimental fire data and mpeg/quick time movies of fire tests that can be downloaded and/or viewed with a Web browser.
Fire Research Information Services (FRIS) (Web, free access)
Fire Research Information Services (FRIS) is a resource for fire protection engineers, scientists, and fire service personnel. It includes FIREDOC which is a complete fire research bibliographic database with 55,000 holdings (published reports, journal articles, conference proceedings, books, and audiovisual items) of FRIS. Each reference has complete bibliographic information.
SRD 160 FLYCHK Collisional-Radiative Code (Web, free access)  Keywords for Database
FLYCHK provides a capability to generate atomic level populations and charge state distributions for low-Z to mid-Z elements under NLTE conditions.
A Fortran Interface to OpenGL Graphics (f90gl) (Web, free access)
f90gl is a public domain implementation of the official Fortran 90 bindings for OpenGL.
SRD 121 CODATA Fundamental Physical Constants (Web, free access)  Keywords for Database
This site, developed in the Physics Laboratory at NIST, addresses three topics: fundamental physical constants, the International System of Units (SI), which is the modern metric system, and expressing the uncertainty of measurement results.
Fundamental Physical Constants - International System of Units (SI) (Web, free access)
Fundamental Physical Constants - International System of Units (SI) lists important definitions related to the modern metric system of measurement. These 'essentials' are adapted from NIST Special Publications SP 811 and SP 330.
SRD 123 Fundamental Physical Constants - Searchable Bibliography on the Constants (Web, free access)
Fundamental Physical Constants - Searchable Bibliography on the Constants contains citations for the most important theoretical and experimental publications relevant to the fundamental constants and closely related precision measurements published since the mid 1980s.
SRD 111 Ground Levels and Ionization Energies for the Neutral Atoms (Web, free access)  Keywords for Database
Data for ground state electron configurations and ionization energies for the neutral atoms (Z = 1-104) including references.
Guide to Available Mathematical Software (Web, free access)
The Guide to Available Mathematical Software studies techniques to provide scientists and engineers with improved access to reusable computer software components which are available to them for use in mathematical modeling and statistical analysis. It provides centralized access to such items as abstracts, documentation, and source code of software modules that it catalogs.
Guidelines for Evaluating and Expressing the Uncertainty of NIST Measurement Results (Web, free access)
Guidelines for Evaluating and Expressing the Uncertainty of NIST Measurement Results presents a method of evaluating and expressing uncertainty in measurement adapted from NIST Technical Note 1297.
SRD 108 Handbook of Basic Atomic Spectroscopic Data (Web, free access)  Keywords for Database
This handbook provides a selection of the most important and frequently used atomic spectroscopic data. The compilation includes data for the neutral and singly-ionized atoms of all elements hydrogen through einsteinium (Z = 1-99). The wavelengths, intensities, and spectrum assignments are given for each element, and the data for the approximately 12,000 lines of all elements are also collected into a single table.
SRD 81 NIST Heat Transmission Properties of Insulating and Building Materials (Web, free access)  Keywords for Database
NIST has accumulated a valuable and comprehensive collection of thermal conductivity data. Version 1.0 of the database includes data for over 2000 measurements, covering several categories of materials including concrete, fiberboard, plastics, thermal insulation, and rubber.
SRD 149 NIST High Temperature Superconducting Materials Database (Web, free access)  Keywords for Database
The NIST High Temperature Superconducting Materials Database (WebHTS) provides evaluated thermal, mechanical, and superconducting property data for oxides and other nonconventional superconductors.
SRD 102 HIV Structural Database (Web, free access)  Keywords for Database
The HIV Protease Structural Database is an archive of experimentally determined 3-D structures of Human Immunodeficiency Virus 1 (HIV-1), Human Immunodeficiency Virus 2 (HIV-2) and Simian Immunodeficiency Virus (SIV) Proteases and their complexes with inhibitors or products of substrate cleavage.
SRD 155 HIV Structural Database using Chem BLAST for all classes of AIDS inhibitors (Web, free access)  Keywords for Database
The HIV structural database (HIVSDB) is a comprehensive collection of the structures of HIV protease, both of unliganded enzyme and of its inhibitor complexes. It contains abstracts and crystallographic data such as inhibitor and protein coordinates for 248 data sets, of which only 141 are from the Protein Data Bank (PDB).
SRD 131 Human Mitochondrial Protein Database (Web, free access)  Keywords for Database
The Human Mitochondrial Protein Database (HMPDb) provides comprehensive data on mitochondrial and human nuclear encoded proteins involved in mitochondrial biogenesis and function. This database consolidates information from SwissProt, LocusLink, Protein Data Bank (PDB), GenBank, Genome Database (GDB), Online Mendelian Inheritance in Man (OMIM), Human Mitochondrial Genome Database (mtDB), MITOMAP, Neuromuscular Disease Center and Human 2-D PAGE Databases. This database is intended as a tool not only to aid in studying the mitochondrion but in studying the associated diseases.
SRD 115 Hydrocarbon Spectral Database (Web, free access)  Keywords for Database
All of the rotational spectral lines observed and reported in the open literature for 91 hydrocarbon molecules have been tabulated. The isotopic molecular species, assigned quantum numbers, observed frequency, estimated measurement uncertainty and reference are given for each transition reported.
NIST Interactive Algorithm for Isotopic CO2 Measurements (Web, free access)
NIST Interactive Algorithm for Isotopic CO2 Measurements is a web-based tool for converting carbon dioxide isotope measurements into standardized delta 13-C and delta-18-O values.
International Comparisions Database (Web, free access)  Keywords for Database
The International Comparisons Database (ICDB) serves the U.S. and the Inter-American System of Metrology (SIM) with information based on Appendices B (International Comparisons), C (Calibration and Measurement Capabilities) and D (List of Participating Countries) of the Comité International des Poids et Mesures (CIPM) Mutual Recognition Arrangement (MRA). The official source of the data is The BIPM key comparison database. The ICDB provides access to results of comparisons of measurements and standards organized by the consultative committees of the CIPM and the Regional Metrology Organizations.
SRD 147 Ionic Liquids Database- (ILThermo) (Web, free access)  Keywords for Database
IUPAC Ionic Liquids Database, ILThermo, is a free web research tool that allows users worldwide to access an up-to-date data collection from the publications on experimental investigations of thermodynamic, and transport properties of ionic liquids as well as binary and ternary mixtures containing ionic liquids.
SRD 60 NIST ITS-90 Thermocouple Database (Web, free access)  Keywords for Database
Web version of Standard Reference Database 60 and NIST Monograph 175. The database gives temperature -- electromotive force (emf) reference functions and tables for the letter-designated thermocouple types B, E, J, K, N, R, S and T. These reference functions have been adopted as standards by the American Society for Testing and Materials (ASTM) and the International Electrotechnical Commission (IEC).
Lispix Program (Web, free access)
Lispix is a public domain image analysis program for Windows. While including basic image processing functions found in ImageJ, NIH Image, and in some commercial programs, Lispix also has a collection of special purpose research tools for electron microscopy(1) and spectral imaging at NIST(2). In spite of that, many of the features incorporated into Lispix have been useful for other researchers. Lispix is useful for processing and analyzing images, and stacks of images or data cubes. Image pixels can be bit, integer, real, complex and color.
MassSpectator Automated Data Analysis Tool (Web, free access)
MassSpectator is a mathematical method that locates, and calculates the area beneath, peaks from mass spectra using only reproducible mathematical operations and no user-selected parameters. It makes no assumptions about peak shape and requires no smoothing or preprocessing of the data.
Matrix Market Database (Web, free access)
The Matrix Market Database is a visual repository of test data for use in comparative studies of algorithms for numerical linear algebra, featuring nearly 500 sparse matrices from a variety of applications, as well as matrix generation tools and services.
SRD 166 MEMS Calculator (Web, free access)  Keywords for Database
This MEMS Calculator determines the following thin film properties from data taken with an optical interferometer or comparable instrument: a) residual strain from fixed-fixed beams, b) strain gradient from cantilevers, c) step heights or thicknesses from step-height test structures, and d) in-plane lengths or deflections. Then, residual stress and stress gradient calculations can be made after an optical vibrometer or comparable instrument is used to obtain Young's modulus from resonating cantilevers or fixed-fixed beams. In addition, wafer bond strength is determined from micro-chevron test structures using a material test machine.
National Vulnerability Database (NVD) (Web, free access)  Keywords for Database
NVD is a comprehensive cyber security vulnerability database that integrates all publicly available U.S. Government vulnerability resources and provides references to industry resources. It is based on and synchronized with the CVE vulnerability naming standard.
NIST Diffusion Data Center (Web, free access)  Keywords for Database
The NIST Diffusion Data Center is a collection of over 14,100 international papers, theses, and government reports on diffusion published before 1980.
NIST Digital Library of Mathematical Functions (Web, free access)  Keywords for Database
The Digital Library of Mathematical Functions (DLMF) is a compendium of essential properties of the special functions of applied mathematics, which are ubiquitous in mathematical modeling and scientific computing. The DLMF includes references to proof sources for every formula, descriptions of relevant mathematical techniques, illustrative graphics , and links to online research literature, algorithms and software. The DLMF is updated periodically to cite or include new published results.
SRD 13 NIST JANAF Thermochemical Tables (Web, free access)  Keywords for Database
his database contains the data tables of the NIST-JANAF Thermochemical Tables
SRD 159 NLTE4 Plasma Population Kinetics Database (Web database for purchase)  Keywords for Database
This database contains benchmark results for simulation of plasma population kinetics and emission spectra. The data were contributed by the participants of the 4th Non-LTE Code Comparison Workshop who have unrestricted access to the database. The only limitation for other users is in hidden labeling of the output results. Guest users can proceed to the database entry page without entering userid and password.
Object-Oriented Micromagnetics Modeling Framework (OOMMF) (Web, free access)
OOMMF are portable, extensible public domain programs and tools for micromagnetics
The Official U.S. Time (Web, free access)  Keywords for Database
This site provides the official U.S. time for each time zone.
Omnitab 80 (Web, free access)
OMNITAB 80 is a high-level spread sheet for statistical analysis. OMNITAB, the precursor of Minitab(TM), was developed in the Statistical Engineering Division and is maintained by the Statistical Engineering Division. OMNITAB performs many different statistical analyses, arithmetic and trigonometric calculations, and matrix and array operations. The software responds to simple instructions and uses reliable computational algorithms.
Parallel Adaptive Solution of Partial Differential Equations (PHAML) (Web, free access)
PHAML (Parallel Hierarchical Adaptive MultiLevel) is a parallel implementation (SPMD message passing) of the techniques used by MGGHAT. This program is written in Fortran 90 and uses either PVM or MPI for message passing.
SRD 145 Periodic Table: Atomic Properties of the Elements (Web, free access)  Keywords for Database
A periodic table, containing NIST critically-evaluated data on atomic properties of the elements [SP 966] was designed as a NIST handout for use at exhibitions and trade shows.
Phase Diagrams and Computational Thermodynamics - Solder Systems (Web, free access)
Phase Diagrams and Computational Thermodynamics - Solder Systems predicts melting temperatures and freezing ranges of lead-free solders which are used to remove lead-containing components from commercial products. This database also shows the effects of non-equilibrium solidification. Also included is a collection of calculated binary and ternary systems that are relevant to solders.
SRD 172 Polymer MALDI MS Methods Database (Web, free access)
This database consists of methods, taken largely from the peer-review scientific literature, for matrix-assisted laser desorption ionization (MALDI) mass spectrometry on a wide variety of synthetic polymers. These methods have not necessarily been tested by the Standards and Data Subgroup of the Characterization and Measurement Group of the Polymers Division of the National Institute of Standards and Technology (NIST), nor does NIST claim the database to be a comprehensive list of all methods to be found in the literature. This database is provided solely as a resource for the polymer mass spectroscopy community.
SRD 143 NIST Potential Energy Surface Database of Group II Dimer (Web, free access)  Keywords for Database
This database provides critical atomic and molecular data needed in order to evaluate the feasibility of using laser cooled and trapped Group II atomic species (Mg, Ca, Sr, and Ba) for ultra-precise optical clocks or quantum information processing devices.
SRD 150 NIST Property Data Summaries for Advanced Materials (Web, free access)  Keywords for Database
Property Data Summaries are topical collections of property values derived from surveys of published data. Thermal, mechanical, structural, and chemical properties are included in the collections.
SRD 138 NIST Property Data Summaries for Fracture Toughness (Web, free access)
NIST Property Data Summaries for Fracture Toughness provide fracture toughness data on numerous materials.
SRD 137 NIST Property Data Summaries for Oxide Glasses (Web, free access)
The NIST Oxide Glasses Collection has property data on borate base glasss, germanate base glasses, phosphate base glasses and silicate base glasses.
SRD 120 Radionuclide Half-Life Measurements (Web, free access)
Radionuclide Half-Life Measurements presents the half-lives of many radionuclides measured in the Radio Activity Group at NIST. Revised values for the half lives of various 'short-lived' radionuclides arise from improved impurity analysis, incorporation of additional data from new sources, and reevaluation of old data.
SRD 116 NIST Recommended Rest Frequencies for Observed Interstellar Molecular Microwave Transitions - 2002 Revision (Web, free access)  Keywords for Database
Critically evaluated transition frequencies for the molecular transitions detected in interstellar and circumstellar clouds are presented.
SRD 158 SAHA Plasma Population Kinetics Modeling Database (Web, free access)  Keywords for Database
This database contains benchmark results for simulation of plasma population kinetics and emission spectra.
SRD 165 NIST Semantics for Biological Data Resource: Cell Image Database (Web, free access)  Keywords for Database
This Database is a prototype to test concepts for semantic searching of cell image data based on experimental details.
SRD 130 Short Tandem Repeat DNA Internet Database (Web, free access)  Keywords for Database
Short Tandem Repeat DNA Internet Database is intended to benefit research and application of short tandem repeat DNA markers for human identity testing. Facts and sequence information on each STR system, population data, commonly used multiplex STR systems, PCR primers and conditions, and a review of various technologies for analysis of STR alleles have been included.
SRD 106 IUPAC-NIST Solubility Database (Web, free access)  Keywords for Database
These solubilities are compiled from 18 volumes (Click here for List) of the International Union for Pure and Applied Chemistry(IUPAC)-NIST Solubility Data Series. The database includes liquid-liquid, solid-liquid, and gas-liquid systems. 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 67,500 solubility measurements and over 1800 references.
SRD 40 NDRL/NIST Solution Kinetics Database on the Web (Web, free access)  Keywords for Database
Data for free radical processes involving primary radicals from water, inorganic radicals and carbon-centered radicals in solution, and singlet oxygen and organic peroxyl radicals in various solvents.
Sparse Basic Linear Algebra Subprograms (Web, free access)
Sparse Basic Linear Algebra Subprograms (BLAS) Library describes kernels operations for sparse vectors and matrices. The current distribution adheres to the ANSI C interface of the BLAS Technical Forum Standard. Older libraries corresponding to previous designs are also included for archival and historical purposes.
SRD 113 Spectral Data for the Chandra X-ray Observatory (Web, free access)
Tables of critically compiled wavelengths, energy levels, line classifications, and transition probabilities are given for ionized spectra of neon (Ne V to Ne VIII), magnesium (Mg V to Mg X), silicon (Si VI to Si XII), and sulfur (S VIII to S XIV ) in the 20 Å to 170 Å region. These tables provide data of interest for the Emission Line Project in support of analyses of astronomical data from the Chandra X-Ray Observatory.
Standard Test Data and Peak Fitting for XPS Measurements (Web, free access)  Keywords for Database
This web site provides an extensive set of simulated photoelectron spectroscopy data for users to test software for determining the positions and intensities of overlapping peaks. Users download the data, perform their analyses, and then upload their results. A Java program evaluates the results and provides a graphical presentation of the errors in the user's analyses.
Statistical Reference Datasets (Web, free access)  Keywords for Database
The Statistical Reference Datasets is also supported by the Standard Reference Data Program. The purpose of this project is to improve the accuracy of statistical software by providing reference datasets with certified computational results that enable the objective evaluation of statistical software.
SRD 124 Stopping-Power and Range Tables for Electrons, Protons, and Helium Ions (Web, free access)  Keywords for Database
The databases ESTAR, PSTAR, and ASTAR calculate stopping-power and range tables for electrons, protons, or helium ions. Stopping-power and range tables can be calculated for electrons in any user-specified material and for protons and helium ions in 74 materials.
SRD 30 NIST Structural Ceramics Database (Web, free access)  Keywords for Database
The NIST Structural Ceramics Database (WebSCD) provides evaluated materials property data for a wide range of advanced ceramics known variously as structural ceramics, engineering ceramics, and fine ceramics.
SRD 126 Tables of X-Ray Mass Attenuation Coefficients and Mass Energy - Absorption Coefficients (Web, free access)
Tables of X-Ray Mass Attenuation Coefficients and Mass Energy - Absorption Coefficients from 1 keV to 20 MeV for Elements Z = 1 to 92 and 48 Additional Substances of Dosimetric Interest include tables covering energies of the photon (x-ray, gamma ray, bremsstrahlung) from 1 keV to 20 MeV.
Template Numerical Toolkit (Web, free access)
The Template Numerical Toolkit (TNT) is a collection of interfaces and reference implementations of numerical objects useful for scientific computing in C++. The toolkit defines interfaces for basic data structures, such as multidimensional arrays and sparse matrices, commonly used in numerical applications. The goal of this package is to provide reusable software components that address many of the portability and maintennace problems with C++ codes.
SRD 161 The Spectrum of Th-Ar Hollow Cathode Lamps in the 691nm to 5804nm region Database (Web, free access)  Keywords for Database
This atlas presents observations of the infra-red (IR) spectrum of a low current Th-Ar hollow cathode lamp with the 2-m Fourier transform spectrometer (FTS) at NIST. These observations establish more than 2400 lines that are suitable for use as wavelength standards in the range 691 nm to 5804 nm. The observations were made in collaboration with the European Southern Observatory (ESO), in order to provide calibration reference data for new high-resolution Echelle spectrographs, such as the Cryogenic High-Resolution IR Echelle Spectrograph ([CRIRES]), ESO's new IR spectrograph at the Very Large Telescope in Chile.
SRD 74 Thermodynamics of Enzyme-Catalyzed Reactions Database (Web, free access)  Keywords for Database
The Thermodynamics of Enzyme-Catalyzed Reactions Database contains thermodynamic data on enzyme-catalyzed reactions that have been recently published in the Journal of Physical and Chemical Reference Data (JPCRD). For each reaction the following information is provided: the reference for the data, the reaction studied, the name of the enzyme used and its Enzyme Commission number, the method of measurement, the data and an evaluation thereof.
SRD 134 Database of the Thermophysical Properties of Gases Used in the Semiconductor Industry (Web, free access)
The Database of the Thermophysical Properties of Gases Used in the Semiconductor Industry contains transport and thermodynamic property data for the gases used in semiconductor processing. The data are useful for equipment modeling in chemical vapor deposition (CVD) processes and the data will also provide a rational basis for the calibration of mass flow controllers (MRCs) used to meter process gases.
SRD 117 Triatomic Spectral Database (Web, free access)  Keywords for Database
All of the rotational spectral lines observed and reported in the open literature for 55 triatomic molecules have been tabulated. The isotopic molecular species, assigned quantum numbers, observed frequency, estimated measurement uncertainty and reference are given for each transition reported.
TRYZAF Program (Web, free access)
TRYZAF is a freeware experimental design/analysis program that shows the magnitude and variability of the corrections to electron microbeam analysis data produced by the various, currently-used physical models and parameters account for the differences in x-ray production (Z), absorption (A) and fluorescence (F) between sample and standard. TRYZAF provides a simple and effective way to estimate the magnitude of error in compositional analyses due to uncertainties in the correction procedures.
SRD 119 Vibrational branching ratios and asymmetry parameters in the photoionization of CO2 in the region between 650 Å and 840 Å (Web, free access)  Keywords for Database
CO2 is studied using dispersed synchrotron radiation in the 650 Å to 850 Å spectral region. The vibrationally resolved photoelectron spectra are analyzed to generate relative vibrational transition amplitudes and the angular asymmetry parameters describing the various transitions observed.
NIST Visible Cement Dataset (Web, free access)
The NIST Visible Cement Dataset consists of data on cement pastes with w/c ratios between 0.3 and 0.45 that were prepared and viewed after various hydration times.
SRD 118 Wavenumber Calibration Tables from Heterodyne Frequency Measurements (Web, free access)
Wavenumber Calibration Tables from Heterodyne Frequency Measurements contains the bibliography and atlas as updated through November 1994. The atlas and wavenumber tables consist of many pages of spectral maps accompanied by tables of transition wavenumbers and their identity.
SRD 202 NIST/TRC Web Thermo Tables (WTT) - Lite Edition (Online Subscription)  Keywords for Database
WTT - Lite Edition, a Web version of the TRC Thermodynamic Tables, represents a collection of critically evaluated thermodynamic property data for 150 commonly-used (primarily organic) pure compounds.
SRD 203 NIST/TRC Web Thermo Tables (WTT) - Professional Edition (Online Subscription)  Keywords for Database
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 Nov. 2011, WTT contains information on 23999 compounds.
SRD 126 X-Ray Attenuation and Absorption for Materials of Dosimetric Interest (Web, free access)  Keywords for Database
Tables and graphs of the photon mass attenuation coefficient and the mass energy-absorption coefficient are presented for all of the elements Z = 1 to 92, and for 48 compounds and mixtures of radiological interest. The tables cover energies of the photon (x-ray, gamma ray, bremsstrahlung) from 1 keV to 20 MeV.
SRD 66 X-Ray Form Factor, Attenuation and Scattering Tables (Web, free access)  Keywords for Database
This database collects tables and graphs of the form factors, the photoabsorption cross section, and the total attenuation coefficient for any element (Z <= 92).
SRD 20 X-ray Photoelectron Spectroscopy Database (Version 4.1) (Web, free access)  Keywords for Database
The NIST XPS Database gives access to energies of many photoelectron and Auger-electron spectral lines. The database contains over 22,000 line positions, chemical shifts, doublet splittings, and energy separations of photoelectron and Auger-electron lines.
SRD 128 X-Ray Transition Energies Database (Web, free access)  Keywords for Database
This X-ray transition table provides the energies and wavelengths for the K and L transitions connecting energy levels having principal quantum numbers n = 1, 2, 3, and 4. The elements covered include Z = 10, neon to Z = 100, fermium. There are two unique features of this data base: (1) a serious attempt to have all experimental values on a scale consistent with the International System of measurement (the SI) and (2) inclusion of accurate theoretical estimates for all transitions.
SRD 8 XCOM: Photon Cross Sections Database (Web, free access)  Keywords for Database
A web database is provided which can be used to calculate photon cross sections for scattering, photoelectric absorption and pair production, as well as total attenuation coefficients, for any element, compound or mixture (Z <= 100) at energies from 1 keV to 100 GeV.
Last modified: November 6, 2008 (Created: November 9, 2001)
For questions or comments: Contact Us