what is cesium fluoride
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Caesium fluoride Caesium fluoride or cesium fluoride is an inorganic compound usually encountered as a hygroscopic white solid. It is used in organic synthesis as a source of the fluoride anion.Caesium has the lowest electronegativity of all non-radioactive elements and fluorine has the highest electronegativity of all elements.aesium fluoride can be prepared by the reaction of caesium hydroxide (CsOH) with hydrofluoric acid (HF). The resulting salt can then be purified by recrystallization.
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cesium-137 cesium-137 (137 Cs), a radioactive material with a half-life of 30.2 years that is used in radiotherapy as a sealed source of gamma rays intended for application to various malignancies that are treated by brachytherapy.Cesium has replaced radium for such applications.See also brachytherapy. radioactive material with a half-life of 30.2 years that is used in radiotherapy as a sealed source of gamma rays intended for application to various malignancies that are treated by brachytherapy. Cesium has replaced radium for such applications. See also brachytherapy.
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Cesium Element Facts Bunsen and Kirchhoff named the element cesium, from the Latin word ‘caesius’ meaning sky blue, after the blue lines they saw in the spectrum. The Latin spelling is still reflected in British English where cesium is spelt ‘caesium.’. In 1861 Bunsen and Kirchhoff also discovered rubidium by the same method.
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Hydrofluoric acid From Wikipedia, the free encyclopedia. Hydrofluoric acid is a solution of hydrogen fluoride (HF) in water. It is a precursor to almost all fluorine compounds, including pharmaceuticals such as fluoxetine (Prozac), diverse materials such as PTFE (Teflon), and elemental fluorine itself.
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Francium Francium is a chemical element with symbol Fr and atomic number 87. It was formerly known as eka-caesium and actinium K. It is the second-least electronegative element, behind only caesium. Francium is a highly radioactive metal that decays into astatine, radium, and radon. As an alkali metal, it has one valence electron. Bulk francium has never been viewed.
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- Fluoride varnish is composed of a high concentration of fluoride as a salt or silane preparation in a fast drying, alcohol and resin based solution. The concentration, form of fluoride, and dispensing method may vary depending on the manufacturer.
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- Goose Green Vermont obituaries, or death notices, are actually a type of classified ad placed in a newspaper and are not generally reported news.. Much like wedding announcements, for sale ads, and personals, Goose Green VT obituaries are taken out by interested parties wishing to give a public notice.
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Water Quality Terms and Definitions Fluoride is a compound which occurs naturally in both groundwater and surface water. At low levels, fluoride can provide protection against tooth decay by increasing the durability of tooth enamel. The USEPA has set a maximum drinking water standard for fluoride of 4 parts per million (ppm). EPA has also set a secondary fluoride standard of 2 ppm to protect against dental fluorosis (tooth staining or pitting in developing teeth of children under 9 years old).
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- Polyvinylidene fluoride (PVDF) PVDF (Polyvinylidene fluoride) is a family of semi-crystalline fluoropolymers. They possess the characteristic stability of fluoropolymers especially when exposed to harsh thermal, chemical and UV environments. This polymer has two important properties.
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APOAEQUORIN APOAEQUORIN Overview Information. Apoaequorin is a protein that was obtained in 1962 from a specific type of jellyfish that glows. When apoaequorin is exposed to calcium, the protein and calcium bind and a blue light is produced. For more than 40 years, apoaequorin has been used to study how calcium works inside cells. Recently apoaequorin has been manufactured on a larger scale for use in the dietary supplement Prevagen.
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Fluorite Fluorite (also called fluorspar) is the mineral form of calcium fluoride, CaF2. It belongs to the halide minerals. It crystallizes in isometric cubic habit, although octahedral and more complex isometric forms are not uncommon. Mohs scale of mineral hardness, based on scratch Hardness comparison, defines value 4 as Fluorite.
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What is Francium? Like other radioactive elements, francium is toxic. Exposure to the element can cause radiation damage in the body, which can lead to long term health effects or more immediate health problems, depending on the amount of the dosage.
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- Steps. 1. Sign in to your Yahoo! account. You will need to sign in with the account that you want to delete. If you forgot your password, follow the password recovery link at the login page. Ad. 2. Open the Yahoo! homepage. Scroll down and click the Help link at the bottom-right corner of the page.
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Barium Fluoride (BaF 2) Whilst BaF 2 is the most resistant of the optical fluorides to high-energy radiation, it degrades in moisture and is susceptible to thermal shock, so care must be taken in systems intended for harsh environments. Roditi's optical BaF 2 material is single-crystal optical quality, fabricated to order.
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The Acid Test of Fluoride: How pH Modulates Toxicity Fluoride (F−) at concentrations of 0.7 to 1.2 ppm in drinking water is beneficial as an anti-cariogenic [1]. However, higher levels of F− can occur naturally in groundwater or on land, as is found in several areas in the world [2].
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Cesium Cesium-137 is radioactive and may be used for radiation therapy to treat certain cancers. Space travel engineers have discovered that burning cesium in space is a very efficient form of fuel. It is determined to be 140 times more efficient than any other fuel.
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Period 6 element It has a range of applications in the production of electricity, in electronics, and in chemistry. The radioactive isotope caesium-137 has a half-life of about 30 years and is used in medical applications, industrial gauges, and hydrology.Although the element is only mildly toxic, it is a hazardous material as a metal and its radioisotopes present a high health risk if released into the environment.aesium is an alkali metal and has physical and chemical properties similar to those of rubidium and potassium. The metal is extremely reactive and pyrophoric, reacting with water even at −116 °C (−177 °F).
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Liquid Elements - Elements That Are Liquids Near Room Temperature Cesium (Cs) , a soft metal that violently reacts with water, melts at 301.59 K. Like francium, cesium's low melting point and softness is a consequence of the size of its atoms: Cs atoms are larger than those of any other known element.
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Molybdenum Fluoride is a mineral that occurs naturally in all water sources, even the oceans. The fluoride ion comes from the element fluorine. Fluorine, the 17th most abundant element in the earth's crust, is never encountered in its free state in nature. It exists only in combination with other elements as a fluoride compound.
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Tom's of Maine Our calcium carbonate-based toothpastes require the use of sodium monofluorophosphate. We use sodium fluoride in our anticavity gel toothpastes and our anticavity mouthwashes. We've set high standards in defining natural, sustainable, and responsible.luoride is currently the only toothpaste ingredient recognized by the US Food and Drug Administration to prevent cavities. The FDA recognizes three forms of fluoride: sodium monofluorophosphate, sodium fluoride, and stannous fluoride and regulates the levels at which they can be included in toothpaste formulations.
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- Hydrofluoric acid is a solution of hydrogen fluoride (HF) in water.It is a precursor to almost all fluorine compounds, including pharmaceuticals such as fluoxetine (Prozac), diverse materials such as PTFE (Teflon), and elemental fluorine itself.ydrogen fluoride gas is an acute poison that may immediately and permanently damage lungs and the corneas of the eyes. Aqueous hydrofluoric acid is a contact-poison with the potential for deep, initially painless burns and ensuing tissue death.
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- Fluoride salts and hydrofluoric acid are the main fluorides of industrial value. Compounds with C-F bonds fall into the realm of organofluorine chemistry. The main uses of fluoride, in terms of volume, are in the production of cryolite, Na3AlF6. It is used in aluminium smelting.
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What is ammonium fluoride? Ammonium fluoride is a white crystalline solid that is soluble in water and is fairly stable. Ammonium fluoride is labeled as a poison by the Department of Transportation. Ammonium fluoride is utilized in brewing, chemical analysis and wood preservation. Continue Reading.
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- Sodium fluoride /ˌsoʊdiəm ˈflʊəraɪd/ is an inorganic chemical compound with the formula NaF. A colorless solid, it is a source of the fluoride ion in diverse applications. Sodium fluoride is less expensive and less hygroscopic than the related salt potassium fluoride.odium fluoride /ˌsoʊdiəm ˈflʊəraɪd/ is an inorganic chemical compound with the formula NaF. A colorless solid, it is a source of the fluoride ion in diverse applications. Sodium fluoride is less expensive and less hygroscopic than the related salt potassium fluoride.
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- ANTIMONY PENTAFLUORIDE page 2 of 6 This Fact Sheet is a summary source of information of all potential and most severe health hazards that may result from exposure. Duration of exposure, concentration of the substance and other factors will affect your susceptibility to any of the potential effects described below. Repeated high exposure can cause deposits of Fluorides in the bones and teeth, a condition called “ Fluorosis .” * The above health effects do NOT occur at the level of Fluoride used in water for preventing cavities in teeth. IDENTIFICATION Antimony Pentafluoride is an oily, colorless liquid.
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Cerium Cerium is a chemical element with symbol Ce and atomic number 58. It is a soft, silvery, ductile metal which easily oxidizes in air. Cerium was named after the dwarf planet Ceres (itself named after the Roman goddess of agriculture). Cerium is the most abundant of the rare earth elements, making up about 0.0046% of the Earth's crust by weight. It is found in a number of minerals, the most important being monazite and bastnaesite. bastnäsite