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Selenium Derivatives

- Barium Selenite
- Benzene Seleninic Acid
- Benzyl Seleno Benzoate
- Copper Selenate Pentahydate
- Dibanzoyl Selenide
- Diphenyl Diselenide
- Phenyl Benzeneseleno Sulphonate
- Phenyl Selenyl Bromide
- 2- Seleno Pyridine
- Benzeneseleninic Anhydride
- Copper Selenate
- Dibenzoyl Diselenide
- Dibenzyl Diselenide
- Diphenyl Selenide
- Phenyl Benzeneseleno Sulfonate

  Benzyl Seleno Benzoate

Elemental selenium and most metallic selenides have relatively low toxicities because of their low bioavailability. By contrast, selenate and selenite are very toxic, and have modes of action similar to that of arsenic. Hydrogen selenide is an extremely toxic, corrosive gas.[10] Selenium also occurs in organic compounds such as dimethyl selenide, selenomethionine, selenocysteine and methylselenocysteine, all of which have high bioavailability and are toxic in large doses. Nano-size selenium has equal efficacy, but much lower toxicity.

  Copper Selenate

Although selenium is an essential trace element, it is toxic if taken in excess. Exceeding the tolerable upper intake level of 400 micrograms per day can lead to selenosis. [8] symptoms of selenosis include a garlic odor on the breath, gastrointestinal disorders, hair loss, sloughing of nails, fatigue, irritability and neurological damage. Extreme cases of selenosis can result in cirrhosis of the liver, pulmonary edema and death.

  Copper Selenate Pentahydate

Dietary selenium comes from nuts, cereals, meat, fish, and eggs. Brazil nuts are the richest ordinary dietary source (though this is soil-dependent, since the Brazil nut does not require high levels of the element for its own needs). High levels are found in kidney, tuna, crab and lobster, in that order.

  Dibenzoyl Diselenide

Natural sources of selenium include certain selenium-rich soils, and selenium that has been bioconcentrated by certain toxic plants such as locoweed. Anthropogenic sources of selenium include coal burning and the mining and smelting of sulfide ores.

  Dibanzoyl Selenide

Selenium is most commonly produced from selenide in many sulfide ores, such as those of copper, silver, or lead. It is obtained as a byproduct of the processing of these ores, from the anode mud of copper refineries and the mud from the lead chambers of sulfuric acid plants. These muds can be processed by a number of means to obtain free selenium.

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