Thallium , and

Differential pulse polarography is used to determine the concentrations of lead, thallium, and indium in a mixture. ... 

The usual symptoms in human thaHotoxicosis resulting from acute, subacute, or chronic intoxication are generaHy the same. Common symptoms include nausea, vomiting, abdominal coHc, pain in legs, nervousness and irtitabHity, chest pain, gingivitis or stomatitis, and anorexia. Alopecia (hair loss) does not always occur, especiaHy in cases of mass intake of thallium and low resistance where the patient may die before the occurrence of hair loss. 

Eor laboratory use, cyclopentadienylthalLium [34822-90-7] reacts cleanly with TiX compounds, where X is halogens (258—264). The cost and toxicity of thallium compounds ate drawbacks to large-scale use. However, Cp2Pb may, in certain cases, be useful (see Lead compounds Thallium and thallium compounds) (265). 

The capability of zinc to reduce the ions of many metals to theh metallic state is the basis of important appHcations. However, metals are removed from zinc solutions by displacement with finely divided zinc before winning by electrolysis. Gold and silver are displaced from cyanide leach solutions with zinc and the following metals are similarly recovered from various solutions platinum group, cadmium, indium, thallium, and sometimes copper. 

Stannous bis-cyclopentadienyl [26078-96-6] M 248.9. Purified by vacuum sublimation, and stored under dry N2. The related thallium and indium compounds are similarly prepared. 

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