Copper——Sources of Exposure; Industrial Hygiene and Risk Assessments
Copper (symbol Cu; CAS #7440-50-8) is distributed widely in nature; it is the twenty-sixth most abundant element in the earth’s crust and is an essential element for many life forms. Copper is an abun
Mar 6，2020 Inorganic chemistry
Cobalt: Sources of Exposure & Medical Management
Cobalt (Co; CASRN 7440-48-4) is a silvery-gray brittle but hard metal, which is distributed widely in nature, including rocks, soil, plants, and animals. It is a metal with no odor and no vapor pressu
Mar 6，2020 Inorganic chemistry
Chromium——Sources of Exposure & Risk Assessments
Chromium occurs in several different oxidation states from chromium metal to hexavalent chromium (Cr(VI)) compounds. In the environment, chromium exists primarily in the trivalent (Cr(III)) and Cr(VI)
Mar 6，2020 Inorganic chemistry
Sources of Exposure and Risk Assessments of Cadmium
Cadmium (symbol Cd; CAS #744-43-9) is a naturally occurring element found in combination with zinc in the earth’s crust. Most cadmium used in the United States is derived from zinc, copper, or lead ex
Mar 6，2020 Inorganic chemistry
Boron——Sources of Exposure & Industrial Hygiene
Boron occurs naturally as sodium borate (Na2B4O7) and calcium borate. Borax (Na2B4O710H2O) has been used for many purposes for years. The earth’s crust contains approximately 0.0008% boron (Cotton et
Mar 6，2020 Inorganic chemistry
Bismuth——Exposure Sources&Risk Assessments
Bismuth is a relatively rare metal found in the earth’s crust at about the same level as silver. It is usually associated with copper, lead, tungsten, silver, and gold ores. Bismuth typically is a byp
Mar 5，2020 Inorganic chemistry
Exposure Sources & Medical Management of Beryllium
Beryllium (Be; CASRN 7440-41-7) is the lightest structural metal known to exist at this time. It is stronger than steel by 40%, its dimensional stability, favorable stiffness-to-weight ratio, high the
Mar 5，2020 Inorganic chemistry
Exposure Sources & Risk Assessments of Barium
Barium(symbolBa;CASRN7440-39-3)isadense,silver-white metal thatoxidizesrapidlyinair,assumingasilver-yellowcolor, when present in its elemental state. The TSCA inventory, established by the Toxic Subst
Mar 5，2020 Inorganic chemistry
Arsenic——Exposure Sources & Medical Management
Arsenic (As; CAS #7440-38-2) is a brittle solid with a metallic coloring that ranges from silver to gray. It is a naturally occurring element found in the earth’s crust,
Mar 5，2020 Inhibitors
Antimony——Exposure Sources & Industrial Hygiene
Antimony is a metal with synonyms, including antimony black; elemental antimony; antimony metal; metallic antimony; stibanylidynestibane; antimony ingot; antimony powder; antimony regulus; stibium and
Mar 5，2020 Inorganic chemistry