Tellurium 99.99% 5 grams

Tellurium 99.99% 5 grams

 

Allied Chemicals GmbH (AL-GMBH) is a leading Specialty Chemicals & Science Based Company in Germany. We deliver an extensive range of high quality Specialty Chemicals & Allied Products to several sectors.

The chemical preparation of all our products are synthesized. These substances possesses sterile effect, so you must be fully aware of what you are purchasing hence there’s no prejudice involved in the offer and acceptance.

Available for sale here is Tellurium 99.99% 5 grams:

Tellurium is a chemical element with the symbol Te and atomic number 52. It is classified as a metalloid in group 16, period 5, and the p-block of the periodic table, exhibiting properties intermediate between metals and nonmetals.

Tellurium appears as a silvery-white, brittle solid at room temperature, with a metallic luster when pure, a melting point of 449.51 °C, a boiling point of 988 °C, and a density of 6.232 g/cm³. Its atomic weight is 127.60(3), and it has eight naturally occurring isotopes, the most abundant being Te.

Chemically similar to selenium and sulfur, tellurium is a p-type semiconductor whose electrical conductivity increases upon exposure to light. It was first discovered in 1782 by Franz-Joseph Müller von Reichenstein in gold ore from Transylvania. It was isolated and named in 1798 by Martin Heinrich Klaproth after the Latin word tellus meaning “Earth.”

Tellurium is a rare element, averaging only about 3 parts per billion in Earth’s upper crust, and it commonly occurs in association with gold deposits, such as in the mineral calaverite (AuTe2). Most commercial tellurium is obtained as a byproduct from the electrolytic refining of copper, where it accumulates in anode slimes.

Tellurium finds applications in metallurgy to enhance the machinability of copper and stainless steel alloys, as well as to improve the strength and corrosion resistance of lead. It is also used in blasting caps, ceramics, and importantly in thermoelectric materials like bismuth telluride (Bi2Te3)) for cooling devices and power generation.

Additionally, tellurium compounds are employed in solar cells, particularly cadmium telluride (CdTe) photovoltaics, which represent a significant portion of thin-film solar technology.

However, tellurium is mildly toxic; exposure can cause a characteristic garlic-like odor on the breath (known as “tellurium breath”) at concentrations as low as 0.01 mg/m³, and chronic exposure may affect the nervous system.

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