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Scientific Data

Amino Acids (http://www.chemie.fu-berlin.de/chemistry/bio/amino-acids.html) Exit NIEHS Website
Listing of amino acids, abbreviation, linear structure and 3-D molecular model (German labels).

Standard Atomic Weights of the Elements 2003 (http://web.mit.edu/5.112/www/Fall04/pdfs/PeriodicTableList.pdf) Download Adobe Acrobat Reader (61 KB) Exit NIEHS Website
The Commission on Atomic Weights and Isotopic Abundances (CAWIA), part of the International Union of Pure and Applied Chemistry (IUPAC), provides the latest measures of evaluated atomic weight and isotopic abundance data.

Conversion Tables

Online Conversion (http://www.onlineconversion.com/) Exit NIEHS Website
Converts more than 5,000 units and 50,000 conversion measures related to length/distance, temperature, speed, volume, weight/mass, area, force, power, energy, pressure, etc.

Digital Dutch (http://www.digitaldutch.com/unitconverter/) Exit NIEHS Website
Converts area, bits/bytes, density, energy, force, length, mass, power, pressure, speed, temperature and volume units.

Periodic Table

Chemicool (http://www-tech.mit.edu/Chemicool/index.html) Exit NIEHS Website
Quick pick an element from the colorful periodic table. Each element’s record includes general properties, states, energies, oxidation and electrons, appearance, reactions, conductivity and abundance information.

Web Elements (http://www.webelements.com/) Exit NIEHS Website
The first periodic table on the Web that provides essential background information; data on the element’s crystallography, electronic, physical, and nuclear properties; isolation; usage; and its compounds. Images of the element are available when possible.

USA.gov Department of Health & Human Services National Institutes of Health
This page URL: http://www.niehs.nih.gov/research/resources/library/research/referencetools/sci_data.cfm
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Email the Web Manager at webmanager@niehs.nih.gov
Last Reviewed: April 30, 2007