[57] This changes the availability of selenium because only a comparably small part of the selenium in the ore is leached with the copper. It has an approximate composition of SeS2, with individual rings varying in composition, such as Se4S4 and Se2S6. |?Label Name The chemistry of the selenides and sulfides is similar. Selenium Sulfide Topical Suspension USP, 2.5% (Lotion) is available as follows: 4 fl oz plastic bottle (NDC 45802-040-64). Selenium disulfide, also known as selenium sulfide, is a chemical compound and medication used to treat seborrheic dermatitis, dandruff, and pityriasis versicolor. The common mineral selenite is not a selenium mineral, and contains no selenite ion, but is rather a type of gypsum (calcium sulfate hydrate) named like selenium for the moon well before the discovery of selenium. [7], Analogous to the behavior of other chalcogens, selenium forms hydrogen selenide, H2Se. [54], Selenium is most commonly produced from selenide in many sulfide ores, such as those of copper, nickel, or lead. It is also used to treat some fungal infections of the skin. [124], Although selenium is an essential trace element, it is toxic if taken in excess. [137], Selenium deficiency can occur in patients with severely compromised intestinal function, those undergoing total parenteral nutrition, and[138] in those of advanced age (over 90). Topics AZ [20][19], Side effects of selenium disulfide shampoo for dandruff appear to be infrequent. Store at 20-25C (68-77F) [see USP Controlled Room Temperature]. Sheets of amorphous selenium convert X-ray images to patterns of charge in xeroradiography and in solid-state, flat-panel X-ray cameras. [47][48], In living systems, selenium is found in the amino acids selenomethionine, selenocysteine, and methylselenocysteine. At low levels, it is used in the body to create anti-oxidant selenoproteins, at higher doses than normal it causes cell death. [61], Researchers found that application of selenium fertilizer to lettuce crops decreased the accumulation of lead and cadmium. In June 2015, the US Food and Drug Administration (FDA) published its final rule establishing the requirement of minimum and maximum levels of selenium in infant formula. Selenium is most commonly found as an impurity, replacing a small part of the sulfur in sulfide ores of many metals. [15] It was a three-arm trial of 246 people with moderate to severe dandruff and compared treatment with 2% ketoconazole shampoo (n=97), 2.5% selenium disulfide shampoo (n=100), and placebo (shampoo base with no antiseborrheic agent) (n=49) for 29days. Hydrogen sulfide reacts with aqueous selenous acid to produce selenium disulfide: Selenium disulfide consists of 8-membered rings. Selenous acid is bubbled with sulfur dioxide (reduction step) to give elemental selenium. [20], Selenium trioxide may be synthesized by dehydrating selenic acid, H2SeO4, which is itself produced by the oxidation of selenium dioxide with hydrogen peroxide:[22], Hot, concentrated selenic acid can react with gold to form gold(III) selenate.[23]. [51][52], Typical background concentrations of selenium do not exceed 1ng/m3 in the atmosphere; 1mg/kg in soil and vegetation and 0.5 g/L in freshwater and seawater. [70], Amorphous selenium (-Se) thin films have found application as photoconductors in flat panel x-ray detectors. }}. [86], Selenium pollution might impact some aquatic systems and may be caused by anthropogenic factors such as farming runoff and industrial processes. [citation needed], The deiodinase isoenzymes constitute another family of eukaryotic selenoproteins with identified enzyme function. [8], The red , , and forms are produced from solutions of black selenium by varying the evaporation rate of the solvent (usually CS2). In people prone to dandruff, an uninflamed form of seborrhoeic dermatitis, the fungus Malassezia can cause irritation, itching and increased shedding of dead skin cells in areas of the scalp. This process leaches natural soluble selenium compounds (such as selenates) into the water, which may then be concentrated in wetlands as the water evaporates. N c s dng cho kem dng da hoc du gi u. It seldom occurs in its elemental state or as pure ore compounds in the Earth's crust. WebThe safety of topical selenium sulfide lotion in man has been demonstrated previously. They are, thus, involved in thyroid-hormone regulation, participating in the protection of thyrocytes from damage by H2O2 produced for thyroid-hormone biosynthesis. There are, however, a few species that have been seen to survive these events and tolerate the increased selenium. Twenty male patients with a diagnosis of tinea versicolor were randomly assigned to two parallel groups who applied selenium sulfide lotion or the vehicle to the entire skin surface, excluding mucous membranes, fo Native (i.e., elemental) selenium is a rare mineral, which does not usually form good crystals, but, when it does, they are steep rhombohedra or tiny acicular (hair-like) crystals. [114] About 200 million years ago, new selenoproteins were developed as mammalian GSH-Px enzymes. WebSelenium sulfide also referred to as Selenium disulfide is a liquid antiseborrheic and antifungal preparation that should only be used topically. [55][56] Since its invention, solvent extraction and electrowinning (SX/EW) production of copper produces an increasing share of the worldwide copper supply. Selenium sulfide Administration Type: Antiseborrheic Dosage Forms: Routes of Administration: Topical Common Trade Names: Adult Dosing Pityriasis versicolor: apply topically once daily, WebPharmacokinetics: The mechanism of action of topically applied selenium sulfide is not yet known. Books about skin diseasesBooks about the skin [43][44] In the 1970s, it was shown to be present in two independent sets of enzymes. Allow product to remain on skin for 10 minutes, then rinse the body thoroughly. Alkali metal selenides react with selenium to form polyselenides, Se2n, which exist as chains. |template=DrugPageImages Selenium is a chemical element with the symbol Se and atomic number 34. (Only the deiodinase iodotyrosine deiodinase, which works on the last breakdown products of thyroid hormone, does not use selenium. Peaches and pears given a foliar selenium spray contained higher levels of selenium and also stayed firm and ripe longer when in storage. For salmon, the optimal concentration of selenium is about 1 microgram selenium per gram of whole body weight. [21], Selenium disulfide should not be applied to damaged skin as there is a risk of systemic absorption and associated toxicity. Some analytical techniques are capable of distinguishing organic from inorganic forms of the element. 2. Phytoplankton can concentrate inorganic selenium by a factor of 3000. |format=template A reduction of 21% on TPO antibodies is reported with the dietary intake of 0.2mg of selenium. [2], Selenium disulfide acts as an antifungal and keratolytic agent to treat seborrheic dermatitis and dandruff. Please read our full disclaimer here. The selenium cell was used in the photophone developed by Alexander Graham Bell in 1879. Occupational Safety and Health Administration, National Institute for Occupational Safety and Health, Magnetic susceptibility of the elements and inorganic compounds, "The NUBASE2016 evaluation of nuclear properties", "Lettre de M. Berzelius M. Berthollet sur deux mtaux nouveaux", "Effect of light on selenium during the passage of an electric current", "The need for selenite and molybdate in the formation of formic dehydrogenase by members of the Coli-aerogenes group of bacteria", "How Selenium Has Altered Our Understanding of the Genetic Code", 10.1579/0044-7447(2007)36[94:SGAH]2.0.CO;2, "How to use the world's scarce selenium resources efficiently to increase the selenium concentration in food", "Public Health Statement: Selenium Production, Import/Export, Use, and Disposal", "Chemistry: Periodic Table: selenium: key information", "Selenium and Tellurium: Statistics and Information", "Radiography of Welds Using Selenium 75, Ir 192 and X-rays", "Aquatic selenium pollution is a global environmental safety issue", "Mercury, selenium and fish oils in marine food webs and implications for human health", "Review of selenium toxicity in the aquatic food chain", "A teratogenic deformity index for evaluating impacts of selenium on fish populations", "Selenium accumulation protects plants from herbivory by Orthoptera via toxicity and deterrence", "Selenium concentrations in leaf material from Astragalus Oxyphysus (diablo locoweed) and Atriplex Lentiformis (quail bush) in the interior Coast Ranges and the western San Joaquin Valley, California", Linus Pauling Institute at Oregon State University, "Effect of Selenium on Thyroid Disorders: Scientometric Analysis", "Dietary and tissue selenium in relation to methylmercury toxicity", "Post-transcriptional defects of antioxidant selenoenzymes cause oxidative stress under methylmercury exposure", "Protective effect of selenite against methylmercury toxicity: observations concerning time, dose and route factors in the development of selenium attenuation", "Inhibition of the human thioredoxin system: A molecular mechanism of mercury toxicity", Strong antioxidant activity of the novel selenium-containing imidazole compound selenoneine, "Discovery of the strong antioxidant selenoneine in tuna and selenium redox metabolism", "Mercury: selenium interactions and health implications", "Selenocysteine-containing proteins in mammals", "Evolutionary dynamics of eukaryotic selenoproteomes: large selenoproteomes may associate with aquatic life and small with terrestrial life", "Evolution of Dietary Antioxidant Defences", "Reconsidering the evolution of eukaryotic selenoproteins: a novel nonmammalian family with scattered phylogenetic distribution", "The microbial selenoproteome of the Sargasso Sea", "FDA Issues Final Rule to Add Selenium to List of Required Nutrients for Infant Formula", "Selenium stimulates the antitumour immunity: Insights to future research", "Dietary Supplement Fact Sheet: Selenium", "Public Health Statement: Health Effects", "Polo pony selenium levels up to 20 times higher than normal", "CDC NIOSH Pocket Guide to Chemical Hazards Selenium", "Effect of micronutrient status on natural killer cell immune function in healthy free-living subjects aged 90 y", "Selenium and iodine supplementation of rural Tibetan children affected by Kashin-Beck osteoarthropathy", "Serum Selenium Status and Its Interrelationship with Serum Biomarkers of Thyroid Function and Antioxidant Defense in Hashimoto's Thyroiditis", "Selenium deficiency mitigates hypothyroxinemia in iodine-deficient subjects", National Institutes of Health page on Selenium, CDC NIOSH Pocket Guide to Chemical Hazards, https://en.wikipedia.org/w/index.php?title=Selenium&oldid=1123158494, Chemical elements with trigonal structure, Articles with dead external links from November 2020, Short description is different from Wikidata, Articles containing Swedish-language text, Articles to be expanded from February 2022, Articles with unsourced statements from June 2016, Pages using Sister project links with hidden wikidata, Creative Commons Attribution-ShareAlike License 3.0, grey metallic-looking, red, and vitreous black (not pictured) allotropes, This page was last edited on 22 November 2022, at 06:06. Selenium may have a chemo-preventive role in cancer risk as an anti-oxidant, and it might trigger the immune response. [19] Selsun Blue is an over-the-counter shampoo for dandruff with 1% selenium disulfide as its active ingredient. The 1,2 isomer can be prepared by reaction of chlorosulfanes and dichlorodiselane with potassium iodide in carbon disulfide. Selenium sulfide, an anti-infective agent, relieves itching and flaking of the scalp and removes the dry, scaly particles that are commonly referred to as dandruff or seborrhea. If it connects at one of the two terminal carbon atoms, it is normal butyl [28], Selenium reacts with cyanides to yield selenocyanates:[7], Selenium, especially in the II oxidation state, forms stable bonds to carbon, which are structurally analogous to the corresponding organosulfur compounds. The chief commercial uses for selenium today are glassmaking and pigments. Selenium is a semiconductor and is used in photocells. Applications in electronics, once important, have been mostly replaced with silicon semiconductor devices. Selenium is still used in a few types of DC power surge protectors and one type of fluorescent quantum dot. The new brass is marketed under the name EnviroBrass. Selenium sulfide | SSe - PubChem Apologies, we are having some trouble retrieving data from our servers PUGVIEW FETCH ERROR: 403 Forbidden National Center for Biotechnology [80] In X-ray crystallography, incorporation of one or more selenium atoms in place of sulfur helps with multiple-wavelength anomalous dispersion and single wavelength anomalous dispersion phasing. There is limited information regarding Off-Label Guideline-Supported Use of Selenium sulfide in pediatric patients. [141], Selenium interacts with other nutrients, such as iodine and vitamin E. The effect of selenium deficiency on health remains uncertain, particularly in relation to Kashin-Beck disease. [101], Increased dietary selenium reduces the effects of mercury toxicity,[102][103][104] although it is effective only at low to modest doses of mercury. Reactivity Alerts none Air & Water Reactions Slightly water soluble. [65] Like lead and sulfur, selenium improves the machinability of steel at concentrations around 0.15%. It is very important that you use selenium sulfide preparations strictly as directed on the label or as directed by your doctor. When that doc is a hottie in cute nerd glasses continue reading, French professional tennis beaux Fabien Reboul posted a photo of he and fellow French tennis stud Maxence Broville kissing, both wearing the official outfits (kits) from the Slade Toulousain Tennis continue reading. However, it can damage plants at higher doses. They all have a relatively low, monoclinic crystal symmetry (space group 14) and contain nearly identical puckered Se8 rings with different arrangements, as in sulfur. See application instructions on rear panel of this bottle. Michiaki Yamashita, Shintaro Imamura, Md. A few of these appeared more recently, in the last 50200 million years, in fruits and flowers of angiosperm plants. At levels of 1mg/m3, selenium is immediately dangerous to life and health. Electrolytic metal refining is particularly productive of selenium as a byproduct, obtained from the anode mud of copper refineries. Rhyheim Shabazz has raised the bar for cock-in-butt content time and time again, with next-level work that conveys the sheer and utter pleasure of sex and sensuality. [ 1][ 2][ 3] For the treatment of tinea versicolor, seborrheic dermatitis of the scalp, and dandruff. Selenium was also recognized as an important veterinary toxin, which is seen in animals that have eaten high-selenium plants. [17] Isotopes lighter than the stable isotopes primarily undergo beta plus decay to isotopes of arsenic, and isotopes heavier than the stable isotopes undergo beta minus decay to isotopes of bromine, with some minor neutron emission branches in the heaviest known isotopes. After this, the suspension may be used at less frequent intervals - weekly, every two weeks, or even every 3 or 4 weeks in some cases. [106][107] An antioxidant, selenoneine, which is derived from selenium and has been found to be present in the blood of bluefin tuna, is the subject of scientific research regarding its possible roles in inflammatory and chronic diseases, methylmercury detoxification, and oxidative damages. Author: Vanessa Ngan, Staff Writer, 2005. Do not use on broken skin or inflamed areas. Extreme cases of selenosis can exhibit cirrhosis of the liver, pulmonary edema, or death. DermNet does not provide an online consultation service.If you have any concerns with your skin or its treatment, see a dermatologist for advice. [4], Selenium disulfide is sold as an antifungal agent in shampoos for the treatment of dandruff and seborrheic dermatitis associated in the scalp with fungi of genus Malassezia. Selenium sulfide. In plants, it occurs as a bystander mineral,[95] sometimes in toxic proportions in forage (some plants may accumulate selenium as a defense against being eaten by animals,[96] but other plants, such as locoweed, require selenium, and their growth indicates the presence of selenium in soil).[97]. Tetraselenium tetranitride, Se4N4, is an explosive orange compound analogous to tetrasulfur tetranitride (S4N4). Selenium disulfide, also known as selenium sulfide, is a chemical compound and medication used to treat seborrheic dermatitis, dandruff, and pityriasis versicolor. To the knowledge of researchers, there are no reports of mercury levels exceeding that of selenium levels in ocean fish. [8] It resists oxidation by air and is not attacked by nonoxidizing acids. There is no FDA guidance on the use of Selenium sulfide in women of reproductive potentials and males. The selenide dianion Se2 forms a variety of compounds, including the minerals from which selenium is obtained commercially. The reaction produces also cyclooctaselenium Se8 and all other eight-member cyclic selenium sulfides, except SeS7, and several six- and seven-membered rings.[2]. Did Holy-Shit-Hot French Pro Tennis Stars Fabien Reboul and Maxence Broville Just Come Out As A Couple?! There is limited information regarding Off-Label Guideline-Supported Use of Selenium sulfide in adult patients. Inorganic selenium bioaccumulates more readily in phytoplankton than zooplankton. Selenium Sulfide Topical Suspension USP, 2.5% (Lotion) is intended for external use only. Avoid getting shampoo in eyes or in contact with genital area as it may cause irritation and burning. Selenium is listed as an ingredient in many multivitamins and other dietary supplements, as well as in infant formula, and is a component of the antioxidant enzymes glutathione peroxidase and thioredoxin reductase (which indirectly reduce certain oxidized molecules in animals and some plants) as well as in 3 deiodinase enzymes. [41][42] It was discovered to be essential for mammalian life in 1957. The preparation should not be applied more frequently than required to maintain control. [82][83][84], 75Se is used as a gamma source in industrial radiography.[85]. [35] It has also been reported to be effective in the treatment of scalp psoriasis based on clinical observation of over 100treated patients and two case reports of dramatic response. There is limited information regarding IV Compatibility of Selenium sulfide in the drug label. Should not be used when acute inflammation or exudation is present as increased absorption may occur. Common adverse reactions include . Their use continued into the 1990s. These materials are semiconductors. [2][5] Use in pregnancy or breastfeeding has not been studied. Selenium rectifiers were first used in 1933. This page was last edited 17:24, 5 February 2015 by wikidoc user. [7][13], Owing to its use as a photoconductor in flat-panel x-ray detectors (see below), the optical properties of amorphous selenium (-Se) thin films have been the subject of intense research.[14][15][16]. [4] Symptoms frequently return if treatment is stopped. [3][14], A 2015 systematic review of topical treatments for seborrheic dermatitis of the scalp identified only a single randomized controlled trial evaluating selenium disulfide for the condition. Unlike the other allotropes, it is insoluble in CS2. Signs and symptoms of selenosis include a garlic odor on the breath, gastrointestinal disorders, hair loss, sloughing of nails, fatigue, irritability, and neurological damage. Repeat treatments as directed by physician. Stop using the preparation and check with your doctor if you experience scalp irritation or skin irritation. [29], Selenium (Greek selene meaning "Moon") was discovered in 1817 by Jns Jacob Berzelius and Johan Gottlieb Gahn. Deiodinases are able to extract electrons from iodides, and iodides from iodothyronines. Also naturally occurring is the long-lived primordial radionuclide 82Se, with a half-life of 9.21019 years. In these compounds, selenium plays a role analogous to that of sulfur. [112], Trace elements involved in GSH-Px and superoxide dismutase enzymes activities, i.e. [78] Ionized selenium (Se+24) is one of the active mediums used in X-ray lasers. [121], The selenium content in the human body is believed to be in the 1320mg range. [148], The effects of selenium intake on cancer have been studied in several clinical trials and epidemiologic studies in humans. [6] Selenium disulfide acts as a keratolytic and antifungal agent. The National Institute for Occupational Safety and Health (NIOSH) has set a Recommended exposure limit (REL) of 0.2mg/m3 over an 8-hour workday. [5] It is on the World Health Organization's List of Essential Medicines. It rarely occurs in its elemental state or as pure ore compounds in [89], Selenium poisoning of water systems may result whenever new agricultural run-off courses through dry lands. Some of the selenium oxyhalides, such as selenium oxyfluoride (SeOF2) and selenium oxychloride (SeOCl2) have been used as specialty solvents. Cancer patients receiving daily oral doses of selenothionine may achieve very high plasma and urine selenium concentrations. [126] This 400g Tolerable Upper Intake Level is based primarily on a 1986 study of five Chinese patients who exhibited overt signs of selenosis and a follow up study on the same five people in 1992. [127] The 1992 study actually found the maximum safe dietary Se intake to be approximately 800 micrograms per day (15 micrograms per kilogram body weight), but suggested 400 micrograms per day to avoid creating an imbalance of nutrients in the diet and to accord with data from other countries. [61][63], The largest commercial use of Se, accounting for about 50% of consumption, is for the production of glass. Selenium sulfide 1% and 2.5% strengths are used on the scalp to help control the symptoms of dandruff and seborrheic dermatitis. )[100], Selenium may inhibit Hashimoto's disease, in which the body's own thyroid cells are attacked as foreign. Selenium dichloride is an important reagent in the preparation of selenium compounds (e.g. Commercially, selenium is produced as a byproduct in the refining of these ores, most often during production. |?Pill Imprint Upon heating, it softens at 50C and converts to gray selenium at 180C; the transformation temperature is reduced by presence of halogens and amines. Except where otherwise noted, data are given for materials in their, Risto S. Laitinen, Pentti Pekone, Yrj Hiltunen and Tapanin A. Pakkanen (1989), "The, Arto Maaninen, Tristram Chivers, Masood Parvez, Jarkko Pietikinen, and Risto S. Laitinen (1999), "Syntheses of THF Solutions of SeX, https://en.wikipedia.org/w/index.php?title=Selenium_hexasulfide&oldid=1034028012, Chemical articles with multiple compound IDs, Chemical articles with multiple PubChem CIDs, Pages using collapsible list with both background and text-align in titlestyle, Articles containing unverified chemical infoboxes, Short description is different from Wikidata, Creative Commons Attribution-ShareAlike License 3.0, This page was last edited on 17 July 2021, at 10:18. Iodides of selenium are not well known. Selenium sulfide can be used safely on the scalp in pregnant women. Repeat application and rinse thoroughly. Daddy Got Dick, directed by David Romero for Pantheon Productions at NakedSword gives us simply fantastic pairings of beefy masculinity. It is a nonmetal (more rarely considered a metalloid) with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic. Anwar Hossain, Ken Touhata, Takeshi Yabu, and Yumiko Yamashita. [15] Consequently, the review concluded that selenium disulfide should not be considered as a first-line therapy but instead should be used as an alternative treatment after other therapies like ketoconazole shampoo have proven not effective. The chronic toxic dose of selenite for humans is about 2400 to 3000 micrograms of selenium per day. Massage about 1 or 2 teaspoonsful of suspension into wet scalp. The only stable chloride is selenium monochloride (Se2Cl2), which might be better known as selenium(I) chloride; the corresponding bromide is also known. KEEP THIS AND ALL MEDICATIONS OUT OF REACH OF CHILDREN. This film features 11 of Bel Alam Wernik has become one of the most popular bottoms in current porn, rightfully so. There is limited information regarding Pharmacodynamics of Selenium sulfide in the drug label. This set index page lists chemical compounds articles It is also used [2][3]It is applied to the Symptoms frequently return if treatment is stopped. [87] Fish are a major source of protein for humans, people who eat more fish are generally healthier than those who eat less, indicating selenium pollution does not appear to be a problem, although it might be useful to be aware that selenium has a potential effect on humans. Other side effects that may occur include: See your doctor if these effects are severe or do not go away. [150], This article is about the chemical element. These findings suggest that, with the exception of vertebrates, aquatic life supports selenium use, whereas terrestrial habitats lead to reduced use of this trace element. There is no FDA guidance on use of Selenium sulfide during labor and delivery. It is toxic by ingestion and inhalation, and is irritating to skin and eyes. Representatives of selenides, diselenides, and selenols include respectively selenomethionine, diphenyldiselenide, and benzeneselenol. For External Use Only. [37], Cyclic selenium sulfides R. Steudel, R. Laitinen, Topics in Current Chemistry, (1982), 102, 177-197, Srpskohrvatski / , World Health Organization's List of Essential Medicines, "Selenium sulfide topical Use During Pregnancy", Selenium(IV) sulfide - pharmacy codes search engine, "Meibomian Gland Dysfunction: A Dermatological Perspective on Pathogenesis and Treatment Outlook", "Zur Resorption und Toxicitt von Selensulfid", "Definition: selenium sulfide from Online Medical Dictionary", "Topical Selenium Sulfide for the Treatment of Hyperkeratosis", "ARVO 2021: Investigational Agent Containing Selenium Sulfide Shows Promise for Meibomian Gland Dysfunction", "A randomized, double-blind, placebo-controlled trial of ketoconazole 2% shampoo versus selenium sulfide 2.5% shampoo in the treatment of moderate to severe dandruff", https://en.wikipedia.org/w/index.php?title=Selenium_disulfide&oldid=1108463362, World Health Organization essential medicines, Infobox drug articles without a structure image, Articles containing unverified chemical infoboxes, Wikipedia medicine articles ready to translate, Creative Commons Attribution-ShareAlike License 3.0, 118 to 119C (244 to 246F) (decomposes), This page was last edited on 4 September 2022, at 14:56. Selenium disulfide, also known as selenious disulfide, selenous disulfide, or selenium (IV) disulfide is a chemical compound. It is also not known whether Selenium Sulfide Topical Suspension USP, 2.5% (Lotion) can cause fetal harm when applied to body surfaces of a pregnant woman or can affect reproduction capacity. A vdjegyzett ksztmnyek azonban nem egyetlen tiszta vegyletet tartalmaznak, hanem olyan keverket, melyben az Se:S arny sszessgben 1:2. [1] It consists of a mixture of inorganic covalent compounds having an approximate empirical formulas of SeS2. Do not leave on hair, scalp or skin for periods longer than directed and ensure all selenium sulfide is rinsed off well. The most notable exception is in power DC surge protection, where the superior energy capabilities of selenium suppressors make them more desirable than metal-oxide varistors. WebSelenium sulfide is a chemical compound with the formula SeS2.It is a yellow crystalline solid that is insoluble in water and most organic solvents. Selenium sulfide appears to have a cytostatic effect on cells of the epidermis and follicular epithelium, thus reducing corneocyte production. This one does too, but it a really good way like in a two boxes of Kleenex way. [10] Selenium disulfide is available as a generic medication and over the counter. [3] Symptoms frequently return if treatment is stopped. [46] Isolation of selenium is often complicated by the presence of other compounds and elements. they are not mapped one onto another by any symmetry operation), and in fact in the -monoclinic form, half the rings are in one configuration (and its mirror image) and half in another. [7] The structure of black selenium is irregular and complex and consists of polymeric rings with up to 1000atoms per ring. CONTRAINDICATIONS: WebSelenium is a chemical element with the symbol Se and atomic number 34. Other problems include degeneration of liver tissue, swelling around the heart, damaged egg follicles in ovaries, cataracts, and accumulation of fluid in the body cavity and head. Jump search Mixture selenium sulfides.mw parser output .infobox subbox padding border none margin 3px width auto min width 100 font size 100 clear none float none background color Isolated selenium deficiency is now being investigated for its role in induction autoimmune reactions in thyroid gland in Hashimoto's disease. The main selenium indicator plants are Astragalus species (including some locoweeds), prince's plume (Stanleya sp. Selenium sulfide 2.5% strength is used also on the body to treat tinea versicolor (a type of fungus infection of the skin). [7][8][9], The systemic absorption and toxicity of orally administered selenium sulfide has been studied in animals. It dissolves in water to form selenous acid, H2SeO3. Selenium sulfide is a antiseborrheic and dermatological agent that is FDA approved for the treatment of tinea versicolor, seborrheic dermatitis of the scalp, and dandruff. By using our services, you agree to our use of cookies. There are several isomers depending on the relative placement of the selenium atoms in the ring: 1,2 (with the two Se atoms adjacent), 1,3, 1,4, and 1,5 (with the Se atoms opposite). There is limited information regarding Nonclinical Toxicology of Selenium sulfide in the drug label. Talk to your doctor about the effects of taking alcohol with this medication. WikiDoc does not promote the administration of any medication or device that is not consistent with its labeling. [111] Marine organisms retained and sometimes expanded their selenoproteomes, whereas the selenoproteomes of some terrestrial organisms were reduced or completely lost. Selenium was the basis of the very first solar cells, with the first example of rooftop solar being a selenium cell from 1884. [58], Industrial production of selenium usually involves the extraction of selenium dioxide from residues obtained during the purification of copper. |sort=Label Page [1][4] Use in pregnancy or breastfeeding has not been studied. [134], The Occupational Safety and Health Administration (OSHA) has set the legal limit (permissible exposure limit) for selenium in the workplace at 0.2mg/m3 over an 8-hour workday. Bernd E. Langner "Selenium and Selenium Compounds" in Ullmann's Encyclopedia of Industrial Chemistry, 2005, Wiley-VCH, Weinheim. Note that this may not provide an exact translation in all languages, Home This was followed by the discovery of selenocysteine in proteins. For every tonne of manganese, an average 2kg selenium oxide is used. Selenium is incorporated into several prokaryotic selenoprotein families in bacteria, archaea, and eukaryotes as selenocysteine,[111] where selenoprotein peroxiredoxins protect bacterial and eukaryotic cells against oxidative damage. Its been heated and argumentative, with fucking continue reading, Celebs like to tease us with a thirst trap every now or thensome dont even make it to grid, cause its just a tease. 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