THis is a general report on copper. It describes it's physical properties, chemical properties, and its uses.

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…moderately toxic upon acute oral exposure. There have been reports of human suicide resulting from the ingestion of gram quantities of this material. The lowest dose of copper sulfate that has been toxic when ingested by humans is 11 mg/kg . Ingestion of copper sulfate is often not toxic because vomiting is automatically triggered by its irritating effect on the gastrointestinal tract. Another copper compound is Copper I Chloride (CuCl). It is a white crystalline solid.