The carmine color of pyrotechnic flares used in military and civilian environments arises from the combustion of strontium salts, some based on chlorides. The military-launched search for chlorine-free formulations has recently ...
Materials Science
Aug 17, 2015
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The Environmental Protection Agency has asked local US communities to test more carefully for hexavalent chromium, a probable carcinogen.
Environment
Jan 13, 2011
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A US environmental group has found that drinking water in 35 American cities contains hexavalent chromium, a probable carcinogen, The Washington Post reported Sunday.
Environment
Dec 19, 2010
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