Mercury

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in explosives and mercuric sulfide HgS used as a high-grade paint pigment. Organic compounds are important and dangerous. Methyl is a lethal pollutant found in rivers and lakes. is a virulent poison and is readily absorbed through the respiratory tract, the gastrointestinal tract, or through unbroken skin. It acts as a cumulative poison since there are few pathways available to the body for its excretion. Since is a very readily vaporizable element at a relatively low temperature, dangerous levels are readily attained in air. Air saturated with vapor at 20°C contains a concentration that exceeds the toxic limit many times. The danger increases at higher temperatures. It is therefore important that be handled with care. Containers of should be securely covered and spillage should be avoided. should only be handled under a well-ventilated area. is well known because of its use in many thermometers. It was common to demonstrate the formation of in the laboratory ...

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