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Curated Data Collections

Curated Data Collections include some former SRDs and other data collections. These collections have been classified into five categories. 

Data Compilations Bibliographic Collections  Information Compilations Search Engines  Portals


Data Compilations

NIST develops and provides valuable compilations of data from the literature, NIST research, partner organizations, or any combination of the above. Some of these databases have been developed in collaboration with other organizations.

NIST/ARPA-E Database of Novel and Emerging Adsorbent Materials (formerly SRD 205)
This database is a web-based catalog of adsorbent materials, measured adsorption properties of numerous materials, and adsorption isotherms. Read More

NIST Atomic Weights and Isotopic Compositions with Relative Atomic Masses (formerly SRD 144)
This is a compliation of data from three sources on the atomic weights of elements Z = 1 to 118 and on isotopic compositions or abundances when appropriate. Read More

NIST Cryogenic Materials Property Database (formerly SRD 152)
Equations of properties as a function of temperature for engineering materials at cryogenic properties are presented in this database. Read More
NIST Chemical Kinetics Database (formerly SRD 17)
Kinetics results for thermal gas-phase chemical reactions are provided in this database, which may be searched by specific reactants involved, reactions resulting in specified products, or all the reactions of a particular species. Read More
NIST Database of the Thermophysical Properties of Gases Used in the Semiconductor Industry (formerly SRD 134)
This database provides thermophysical properties for process gases used in chemical vapor deposition of semiconducting materials. Read More
NIST NLTE4 Plasma Population Kinetics Database (formerly SRD 159)
Benchmark results for the simulation of plasma population kinetics and emission spectra are presented in this database. Read More

NIST Phase Diagrams and Computational Thermodynamics (formerly SRD 139)
Calculated phase diagrams for binary and ternary lead-free solder systems and thermodynamic descriptions of these systems are provided in this compilation. Read More

NIST Potential Energy Surface Database of Group II Dimer Molecules (formerly SRD 143)
This compilation provides critical atomic and molecular data needed in order to evaluate the feasibility of using laser cooled and trapped Group II atomic species for ultra-precise optical clocks or quantum information processing devices. Read More
NIST SAHA Plasma Population Kinetics Modeling Database (formerly SRD 158)
This database contains benchmark results for simulation of plasma population kinetics and emission spectra. Read More
NIST Short Tandem Repeat DNA Internet DataBase (formerly SRD 130)
Short tandem repeat DNA data of importance to the forensics DNA and human identity testing communities are included in this database. Read More

NIST Bibliographic Collections

NIST compiles and provides valuable collections of references in key topical areas. Some of these collections are associated with an SRD.

NIST Atomic Energy Levels and Spectra Bibliographic Database (formerly SRD 169)
References contained in this database pertain to atomic structure and spectra. The database is a companion to SRD 78, NIST Atomic Spectra Database. Read More
NIST Atomic Spectral Line Broadening Bibliographic Database (formerly SRD 109)
This database contains references to publications that include numerical data, general information, comments, and reviews on atomic line broadening and shifts. It is a companion to SRD 78, NIST Atomic Spectra Database. Read More
NIST Atomic Transition Probability Bibliographic Database (formerly SRD 110)
References to publications that include numerical data, comments, and reviews on atomic transition probabilities are provided in this database. It is a companion to SRD 78, NIST Atomic Spectra Database. Read More
NIST Bibliography of Photon Total Cross Section (Attenuation Coefficient) Measurements (formerly SRD 125)
This database contains references of absolute measurements of photon (XUV, X-ray, gamma-ray, bremsstrahlung) total interaction cross sections or attenuation coefficients for the elements and some compounds. Read More
NIST Fundamental Physical Constants Searchable Bibliography (formerly SRD 123)
This searchable bibliography of relevance to the fundamental physical constants is a companion to SRD 121, CODATA Internationally Recommended 2014 Values of the Fundamental Physical Constants. Read More
NIST Short Tandem Repeat DNA Internet DataBase (formerly SRD 130)
More than 3600 reference regarding DNA typing and short tandem repeated DNA sequences are included in this multifunctional database. Read More
ThermoLit: NIST Literature Report Builder for Thermophysical and Thermochemical Property Measurements (formerly SRD 171)
This web application provides free access to an extensive literature collection on thermophysical and thermochemical properties and to an easy-to-use tool for generation of a NIST Literature Report. Read More

NIST Information Compilations

NIST compiles and provides information resources in topical areas of importance to broad user communities. 

NIST Periodic Table of the Elements: Atomic Properties (formerly SRD 145)
This version of the periodic table contains NIST’s latest critically evaluated data for atomic properties of the elements. Read More

NIST Short Tandem Repeat DNA Internet DataBase (formerly SRD 130)
A large quantity of information for the forensics DNA and human identity testing communities, including project lists, presentations and training materials, is available in this database. Read More

NIST Synthetic Polymer MALDI Recipes Database (formerly SRD 172)
This database contains methods for matrix-assisted laser desorption ionization (MALDI) mass spectrometry on a wide variety of synthetic polymers. Read More
NIST ThermoPlan: Experimental Planning and Coverage Evaluation Aid for Thermophysical Property Measurements (formerly SRD 167)
This web application provides free and open access for the broader research community to the experimental planning utilities that are incorporated into the ThermoData Engine (TDE) software. Read More

Search Engines

NIST develops and provides search engines based on a novel rule and root-based algorithmic method. The databases that are searched are not critically evaluated or hosted or curated by NIST.

NIST Biofuels Database (formerly SRD 153)
This database enables the identification of 3-D structures of biofuel materials. Read More
NIST Chem-Blast Gateway to Protein Data Bank and PubChem (formerly SRD 155)
Chemical compounds are identified by searching the Protein Data Bank and PubChem for  ligands of chemical structures. Read More
NIST Human Mitochondrial Protein Database (formerly SRD 131)
This database provides data from searches on mitochondrial and human nuclear-encoded proteins involved in mitochondrial biogenesis and function. Read More



NIST provides portals to access SRD databases and NIST curated data collections.

NIST Ceramics WebBook (formerly SRD 151)
This portal is a gateway to five Standard Reference Databases on the properties of various ceramic materials. Read More

Elemental Data Index (formerly SRD 105)
Data in numerous Standard Reference Databases and NIST curated data collections generated by the NIST Physical Measurement Laboratory are accessible by selecting an element in the periodic table. Read More

Surface Data
This portal is a gateway to seven Standard Reference Databases. Read more


Created April 16, 2018, Updated March 26, 2020