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Description:Arsenic is a naturally occurring element that is widely distributed in the Earth’s crust.
Arsenic is classified chemically as a metalloid, having both properties of a metal and a nonmetal; however, it is frequently referred to as a metal. Elemental arsenic
(sometimes referred to as metallic arsenic) is a steel grey solid material. However, arsenic is usually found in the environment combined with other elements such as oxygen, chlorine, and sulfur. Arsenic combined with these elements is called inorganic arsenic. Arsenic combined with carbon and hydrogen is referred to as organic arsenic.
Most inorganic and organic arsenic compounds are white or colorless powders that do not evaporate. They have no smell, and most have no special taste. Thus, you
usually cannot tell if arsenic is present in your food, water, or air. Inorganic arsenic occurs naturally in soil and in many kinds of rock. When these ores are heated in smelters, most of the arsenic goes up the stack and enters the air as a fine dust. Smelters may collect this dust and take out the arsenic as a compound called arsenic trioxide (As2O3). However, arsenic is no longer produced in the United States; all of the arsenic used in the United States is imported.
CS249496-A
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arsenic_toxzine.pdf
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