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Airgas distributes industrial, medical, and specialty gases, welding supplies, safety products, and tools online through over 700 locations nationwide. Register here for access to Airgas.com.

DuPont is a science-based products and services company. Founded in 1802, DuPont puts science to work by creating sustainable solutions essential to a better, safer, healthier life for people everywhere. Operating in more than 70 countries, DuPont of...

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Praxair, Inc. a worldwide provider of industrial gases, including atmospheric, process and specialty gases. Praxair helps virtually every industry improve product quality, boost performance and benefit the environment through the application of atmos...

Find environmental information about your community: learn how bad the pollution is, where the toxic chemicals come from, what the health risks are, and what actions you can take

Explore the updated online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of articles, biographies, videos, images, and web sites.

ChemSpider is a free chemical structure database providing fast access to over 26 million structures, properties and associated information.