Selenium powder Se powder CAS 7782-49-2

(Selenium powder Se powder CAS 7782-49-2)

Overview of Selenium powder

Selenium powder, chemical formula Se, black gray nonmetal, soluble in concentrated sulfuric acid, chloroform, slightly soluble in carbon disulfide, toxic, insoluble in water, ethanol. Selenium powder is usually in the form of powder or granule, with pure appearance, consistent color, purity up to 99.99%, no soil and other impurities, stable composition and even moisture.

Selenium is a chemical element with the symbol Se and an atomic number of 34. It is a nonmetal (much less thought of as a nonmetal), somewhere between sulfur and tellurium on the periodic table, and also similar to arsenic. Selenium is found in metallic sulfide ores, where it partially displaces sulfur. Commercially, selenium is a by-product of the refining process of these ores, usually during the production process. Pure selenium or selenate compounds are known but are rare. Today the main commercial uses for selenium are glassmaking and pigments. Selenium is a semiconductor used in photovoltaic cells. The once important applications of electronic products have been largely replaced by silicon semiconductor devices. Selenium is still used in several types of DC power surge protectors and one type of fluorescent quantum dot. TRUNNANO is a trusted global Selenium powder Se powder supplier. Feel free to send an inquiry about the latest price of Selenium powder at any time.

Although trace amounts of selenium are necessary for cellular function in many animals (including humans), the elements of selenium and (especially) selenium salts are toxic in even small doses, leading to selenium poisoning. Selenium is an ingredient in many multivitamins and other dietary supplements, as well as infant formula, and is a component of the antioxidant enzymes glutathione peroxidase and thioredoxin reductase (which indirectly reduce certain oxidizing molecules in animals and some plants) and three diiodide enzymes.

Features of selenium powder

Amorphous red powder, becoming black on standing and crystalline on heating; vitreous and colloidal forms may be prepared. Amorphous form softens at 40 °C and melts at 217 °C. It rarely occurs in its elemental state in nature, or as pure ore compounds. Soluble in concentrated nitric acid and in (liquid form) common alkalies. Forms binary alloys with silver, copper, zinc, lead, etc. Low toxicity. A necessary nutritional factor for animals.

How is Selenium powder Se powder Produced?

Selenium is a kind of sparse element, and there is no independent selenium production plant in the world. Selenium is associated with electrolytic copper and nickel, which exists in anode mud of electrolytic anode. There are many methods to recover and purify selenium and tellurium from copper electrolytic anode mud, such as caustic oxidation pressure leaching, oxidation roasting high-temperature leaching, low-temperature oxidation roasting, dilute sulfuric acid leaching, etc. Selenium and tellurium are reduced mostly by sulfur dioxide reduction and copper reduction. Due to the method of pre-roasting and oxidation, the maintenance cost of complex power equipment is high, the sulfur dioxide gas is harmful to the human body and the environment, and the recovery and purity of selenium and tellurium are high. With H2O2 as oxidant, selenium and tellurium were oxidized in a weakly acidic solution. After solid-liquid separation, selenium and tellurium were separated by adjusting pH, and selenium and tellurium were reduced by Na2SO3 under hydrochloric acid acidification. The recoveries of selenium and tellurium were 99% and 98%, respectively, and the purity of both of them could reach 99%.

Applications of Selenium powder Se powder

Selenium can be used in different fields, depending on its purity. Selenium is now used in a wide variety of applications, from glass and metallurgy to pigments, agriculture and electronics. Selenium powder is mainly used in the production of selenium dioxide as electrolytic manganese melting catalyst, other applications in rectifier, photographic exposure agent, petroleum working catalyst, copy toner cartridge, selenium photosensitive plate, alloy, feed and pigment in plastics, paint, enamel and glass, medical and health care medicine and other industries.

Storage Condition of selenium powder:

The damp reunion will affect Se powder dispersion performance and using effects, therefore, selenium Se powder should be sealed in vacuum packing and stored in cool and dry room, the selenium Se powder can not be exposure to air. In addition, the Se powder should be avoided under stress.

Company Profile

NANOTRUN(www.rboschco.com) is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and nanomaterials, including boride powder, nitride powder, graphite powder, sulfide powder, 3D printing powder, etc.The company has a professional technical department and Quality Supervision Department, a well-equipped laboratory, and equipped with advanced testing equipment and after-sales customer service center.If you are looking for high-quality zirconium plate steel metals, please feel free to contact us or click on the needed products to send an inquiry. 

Payment Term

L/C, T/T, Western Union, Paypal, Credit Card etc.

Shipment Term

By sea, by air, by express, as customers request.

Storage Conditions

1) Store in a dry environment at room temperature.

2) Avoid damp and high temperature.

3) Use immediately after opening the inner packing bag.

FAQ

Q1

Is selenium anti-cancer?

Low selenium and some selenium-suitable people may benefit from selecting selenium supplementation for cancer prevention. Still, it has yet to be determined which part of the selenium-suitable population is suitable for selenium supplementation and which part is not. Therefore, selenium supplementation should be taken with caution, and it is advisable to evaluate it according to the type of cancer targeted for prevention and control, the baseline selenium level of the human body, and other comprehensive factors. The amount of selenium supplementation should be strictly controlled, and the type of selenium supplementation should be scientifically selected.

Q2

What are the signs of selenium deficiency?

Selenium is a very important trace element in the human body. It can improve immunity, detoxification, liver disease prevention, and cancer cell inhibition. Selenium deficiency can have a significant impact on the body, including hair loss, nail loss, and skin symptoms.

Q3

What are the application areas of selenium?

Used as a photosensitive material, catalyst in the manganese electrolysis industry, essential nutrient element for animal bodies and beneficial nutrient element for plants, etc.; involved in electronics, glass, metallurgy, chemical industry, healthcare and agriculture.

Q4

What is the function of selenium in the human body?

Excessive free radicals in the body are an important cause of cell cancer. Selenium has a powerful antioxidant ability, which can remove excess free radicals and activate oncogenes in cells to prevent normal cells from becoming cancerous.

Q5

How is selenium extracted?

Industrially, it is mainly produced by separating it from the anode sludge used in the electrolysis of copper or lead. The roasted anode sludge is treated to obtain selenium dioxide, which is then processed to produce selenium.