References (Click the 
next to a value above to see complete citation information for that entry)
Barsan, Michael E., editor. NIOSH Pocket Guide to Chemical Hazards.
Cincinnati, Ohio: NIOSH Publications, 2007.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Aluminum. http://www.cdc.gov/niosh-rtecs/bd50910.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Antimony. http://www.cdc.gov/niosh-rtecs/cc3d6aa8.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Argon. http://www.cdc.gov/niosh-rtecs/cf231860.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Arsenic. http://www.cdc.gov/niosh-rtecs/cg802c8.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Barium. http://www.cdc.gov/niosh-rtecs/cq7fb750.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Beryllium. http://www.cdc.gov/niosh-rtecs/ds1ab3f0.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Bromine. http://www.cdc.gov/niosh-rtecs/ef8adae0.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Calcium. http://www.cdc.gov/niosh-rtecs/ev7aae40.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Carbon. http://www.cdc.gov/niosh-rtecs/ff501c34.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Carbon Black.
http://www.cdc.gov/niosh-rtecs/ff588040.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Carbon Black.
http://www.cdc.gov/niosh-rtecs/RS7D80E8.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Chlorine. http://www.cdc.gov/niosh-rtecs/fo200b20.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Chromium. http://www.cdc.gov/niosh-rtecs/gb401640.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Cobalt. http://www.cdc.gov/niosh-rtecs/gf8583b0.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Copper. http://www.cdc.gov/niosh-rtecs/gl5140c8.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Fluorine. http://www.cdc.gov/niosh-rtecs/lm62ccf8.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Hafnium. http://www.cdc.gov/niosh-rtecs/mg4630c0.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Helium. http://www.cdc.gov/niosh-rtecs/mh637cc0.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Hydrogen. http://www.cdc.gov/niosh-rtecs/mw87cda0.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Indium. http://www.cdc.gov/niosh-rtecs/nl100590.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Iodine. http://www.cdc.gov/niosh-rtecs/nn180858.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Lead. http://www.cdc.gov/niosh-rtecs/of72d288.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Lithium. http://www.cdc.gov/niosh-rtecs/oj5488a0.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Magnesium. http://www.cdc.gov/niosh-rtecs/om200b20.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Manganese. http://www.cdc.gov/niosh-rtecs/oo8d8678.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Mercury. http://www.cdc.gov/niosh-rtecs/ov456d70.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Molybdenum.
http://www.cdc.gov/niosh-rtecs/qa476940.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Neon. http://www.cdc.gov/niosh-rtecs/qp43e6d0.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Nickel. http://www.cdc.gov/niosh-rtecs/qr5aca30.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Nitrogen. http://www.cdc.gov/niosh-rtecs/qw9402a0.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Oxygen. http://www.cdc.gov/niosh-rtecs/rs1f6ee0.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Platinum. http://www.cdc.gov/niosh-rtecs/tp20f580.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Potassium. http://www.cdc.gov/niosh-rtecs/ts629260.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Radon. http://www.cdc.gov/niosh-rtecs/ve393870.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Rhodium. http://www.cdc.gov/niosh-rtecs/vi8a61c8.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Selenium. http://www.cdc.gov/niosh-rtecs/vs757e20.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Silicon. http://www.cdc.gov/niosh-rtecs/vw61a80.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Silver. http://www.cdc.gov/niosh-rtecs/vw3567e0.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Sodium. http://www.cdc.gov/niosh-rtecs/vya77b0.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Sulfur. http://www.cdc.gov/niosh-rtecs/ws40d990.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Tantalum. http://www.cdc.gov/niosh-rtecs/ww53ffe8.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Tellurium. http://www.cdc.gov/niosh-rtecs/wy280de8.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Thallium. http://www.cdc.gov/niosh-rtecs/xg3442e8.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Thorium. http://www.cdc.gov/niosh-rtecs/xo61a800.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Tin. http://www.cdc.gov/niosh-rtecs/xp6fb1c0.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Tungsten. http://www.cdc.gov/niosh-rtecs/yo6d7b58.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Uranium. http://www.cdc.gov/niosh-rtecs/YR3540D0.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for White
Phosphorus. http://www.cdc.gov/niosh-rtecs/th3567e0.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Xenon. http://www.cdc.gov/niosh-rtecs/ze138800.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Yttrium. http://www.cdc.gov/niosh-rtecs/ZG2D78A0.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Zinc. http://www.cdc.gov/niosh-rtecs/zg8339c0.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Zirconium. http://www.cdc.gov/niosh-rtecs/zh6be130.html. Accessed on May 5, 2010.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Cadmium. http://www.cdc.gov/niosh-rtecs/eu958940.html. Accessed on November 15, 2009.
National Institute for Occupational Safety and Health (NIOSH). The Registry of Toxic Effects of Chemical Substances for Strontium. http://www.cdc.gov/niosh-rtecs/wk757e20.html. Accessed on November 15, 2009.
