Tellurium and compounds

The 2003 ACGIH threshold limit value-time-weighted average (TLV-TWA) for tellurium, and compounds as Te, is O.lmg/mk... 

Tellurium and compounds are toxic. Acceptable concentration limit for an 8-hour daily exposure to dust and fumes in air is 0.1 milligrams of tellurium per cubic meter of air. Even exposure at this level may cause what is termed garlic breath.Proper ventilation, appropriate hygienic practices, and good housekeeping should be observed in handling tellurium. Although... 

TELLURIUM and COMPOUNDS (as Te) (Tellurium compounds have variable molecular formulas. The molecular formula for tellurium is Te. The molecular formulas for hydrogen telluride and potassium tellurite are H2Te and KaTeOs, respectively. Tellurium compounds have variable formula weights. The formula weight for tellurium is 127.60. The formula weights for hydrogen telluride and potassium tellurite are 129.6 and 253.8, respectively.)... 

SPILL CLEAN-UP ventilate area of spill or leak sweep spilled substance into sealed containers for disposal in a designated landfill absorb liquid containing tellurium and compounds with noncombustible materials (e.g., dry earth, sand, or vermiculite) for hydrogen telluride, stop flow of gas if possible if source of leak is a cylinder, cautiously remove leaking cylinder to a safe place in open air, and allow cylinder to empty. 

Tellurium and compounds (as Te) Complaints of sleepiness, nausea, metallic taste, and garlicky odor on breath and perspiration associated with workplace exposures. Neuropathies have been noted in high-dose studies. Hydrogen telluride causes pulmonary irritation and hemolysis however, its ready decomposition reduces likelihood of a toxic exposure. Some tellurium compounds are fetotoxic or teratogenic in test animals. 0.1 mg/m (as Te) 25 mg/m (as Te) Metallic tellurium Is a solid with a sllveiy-whlte or grayish luster. 

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