Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
New
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.
NEW
NIST Standard Reference Database Database 1a
NIST/EPA/NIH Mass Spectral Library with Search Program (Data Version: NIST 17, Software Version 2.3g)
This database is the product of a multiyear, comprehensive evaluation and expansion of the world's most widely used mass spectral reference library.
(available ONLY from distributors)
What's New in NIST MS Search program v2.0g distributed with NIST 17
| Contents of the NIST 17 Mass Spectral and Retention Index Libraries | ||
|---|---|---|
| Library Description | Library Name | Library Contents |
| NIST/EPA/NIH Mass Spectral Library (EI) | ||
| Main EI MS library | mainlib | Spectra for 267,376 chemical compounds |
| Replicate EI MS spectra | replib | 39,246 replicate spectra |
| Tandem (MS/MS)Library | ||
|
Tandem (MS/MS) Library - small molecules |
nist_msms | 121,586 Spectra of 15,180 ions |
| Tandem (MS/MS) Library - biologically-active peptides | nist_msms2 | 90,244 spectra of 6,803 precursor ions from 1,904 peptides |
| GC Method / Retention Index Library | ||
| Retention Index Library |
nist_ri |
404,045 RI values for 99,400 compounds; 72,361 compounds in the Main Library have retention index data. |
NIST Standard Reference Subscription Database 202 Web Thermo Tables (WTT) - Lite Edition
This web application provides access to a collection of critically evaluated thermodynamic property data for pure compounds with a primary focus on organics. These data were generated through dynamic data analysis, as implemented in the NIST ThermoData Engine software package. As of November, 2010, WTT - Lite Edition contains information on 150 commonly-used compounds and access to a total of 86407 evaluated experimental data points.
NIST Standard Reference Subscription Database 203 Web Thermo Tables (WTT) - Professional Edition
This web application provides access to a collection of critically evaluated thermodynamic property data for pure compounds with a primary focus on organics. These data were generated through dynamic data analysis, as implemented in the NIST ThermoData Engine software package. As of November, 2011, WTT - Professional Edition contains information on 23399 compounds and access to a total of 512538 evaluated experimental data points. This product also provides critically evaluated data for some non-molecular species such as radicals and organic salts carried from the TRC Thermodynamic Tables published from 1942-2009.
Update
The NIST Ceramics WebBook was updated July 2015.