What is selenium powder and what is it used for?

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Selenium powder It is a chemical with the atomic number and symbol Se. It is nonmetal, but it’s more commonly called a metalloid. It has properties that are in between sulfur and tellurium on the periodic table. It is rare to find it in its pure ore compound form in the Earth’s crust. Selenium powder Water and ethanol are insoluble. Selenium powder can be in powder or grain form. It is usually a powder with a uniform color and a consistent appearance.
Selenium Application
Selenium Selenium is found in metal sulfur ores where it partly replaces the sulfur. Selenium is most often produced commercially as a byproduct during the refining and production of metal sulfide ores. Selenates and selenides are rare minerals. Selenium is used primarily in glassmaking, and as a pigment. Selenium can be used as a photocell and semiconductor. The silicon semiconductor has replaced most of the electronic applications, which were once very important. In some types of DC power surge protecters and in one type of fluorescent quantum dot, selenium is still used.
Selenium is toxic at even low doses. This can lead to selenosis. Selenium appears in many multivitamins as well other dietary supplement, infant formula and as a component to the antioxidant enzymes glutathione-peroxidase and Thioredoxin-reductase which reduce indirectly certain oxidized molecule in animals and in some plants. Selenium needs in plants vary by species. Some require large amounts of the element, while others appear to need none.

Preparation with Selenium Powder
Selenium is an element that is rare. No independent selenium plant exists in the world. Selenium is generally associated with the electrolysis and nickel in the electrolytic mud. Selenium and tellurium are recovered and purified using many different methods. These include caustic oxidative pressurized leaching (COPL), oxidative roasteding and high temperature leaching (OHTL), low-temperature roasting with oxidative leaching (LTOLR), dilute sulfuric acid-leaching etc. Selenium and tellurium reduction is mainly carried out by copper and sulfur dioxide reduction. method. Pre-roasting oxidation is a more complex method that increases the cost and complexity of the power equipment. In addition, sulfur dioxide gas can be harmful to humans and the environment. After solid-liquid seperation, use H2O2 for the oxidant. Adjust the pH in order to separate the selenium from the tellurium. Reduce selenium with Na2SO3 and hydrochloric acid. Selenium and Tellurium recover at 99% each. The purity of the product can reach 99%.
Selenium powder Toxicity
Inhalation causes respiratory membrane irritation and edema. It can also cause bronchial inflammatory disease, pneumonia, or bronchial edema. Elemental Selenium powder Exposure can also cause mucous membrane inflammation, nose bleeding, and coughing.

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