Thallium arsenates

Thallium Arsenates.—Thallous Ortkoarsenate, Tl3As04, has been obtained by the action of ammonia on a solution of the dihydrogen salt.6 It sejiarates as white silky needles. 

One of the most common topics asked of those who work with the actinides relates to handling procedures. The radioactive nature of these elements does require the use of special facilities, processes, and precautions. However, working with radioactive elements in subcritical quantities is as safe, if not safer, than handling many of the toxic chemicals found in a typical synthetic laboratory. The primary advantage in handling radioactive material is the ease with which these elements can be detected. Unlike other toxic chemicals, for example, lead, thallium, arsenic, and so on, a simple survey (seconds) with a radiation detector will show if containment of the material has been lost, where it is, and approximately how much is present. With appropriate monitoring, virtually no uptake of radioactive material occurs, and if any personnel contamination does occur, it is quickly detected and treated. 

Inorganic contaminants such as antimony, asbestos, barium, beryllium, cadmium, chromium, copper, cyanide, mercury, nitrate, nitrite, selenium, thallium, arsenic, fluoride, and lead. 

Ternary systems of thallium, arsenic, and selenium are used in the manufacture of low-melting point glasses with a high refractive index. 

Alopeda (hair loss) Is associated with thallium, arsenic, and selenium toxicosis, chemotherapy with cytostatic drugs, and consumption of the leucaena plant (Leucaena... 

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