Also known as: Arsen, Arsenia
Chemical reference number (CAS): 07440-38-2

Arsenic is a naturally occurring mineral found in soil, bedrock, and water. In its pure form, arsenic is a silver-gray or white brittle metal. Arsenic has no odor and is almost tasteless. Arsenic and its compounds have a variety of commercial uses. Manufacturers use arsenic to make other metals, glass, electronic components, and wood preservatives.

Arsenic occurs naturally in some Wisconsin drinking water supplies. Drugs used to treat parasite diseases have contained arsenic.

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Last Revised: June 2, 2017

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