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Calcium fluoride is the inorganic compound of the elements calcium and fluorine with the formula CaF 2. It is a white solid that is practically insoluble in water. It occurs as the mineral fluorite (also called fluorspar), which is often deeply coloured owing to impurities.
The tables below provides information on the variation of solubility of different substances (mostly inorganic compounds) in water with temperature, at one atmosphere pressure. Units of solubility are given in grams of substance per 100 millilitres of water (g/(100 mL)), unless shown otherwise. The substances are listed in alphabetical order.
The following chart shows the solubility of various ionic compounds in water at 1 atm pressure and room temperature (approx. 25 °C, 298.15 K). "Soluble" means the ionic compound doesn't precipitate, while "slightly soluble" and "insoluble" mean that a solid will precipitate; "slightly soluble" compounds like calcium sulfate may require heat to precipitate.
Fluorite is a major source of hydrogen fluoride, a commodity chemical used to produce a wide range of materials. Hydrogen fluoride is liberated from the mineral by the action of concentrated sulfuric acid: CaF 2 + H 2 SO 4 → CaSO 4 (s) + 2 HF. The resulting HF is converted into fluorine, fluorocarbons, and diverse fluoride materials. As of ...
Calcium(I) fluoride is an unstable inorganic chemical compound with the chemical formula CaF. It can exist as a high temperature gas, or an isolated molecule in a ...
Some 53% of these water systems have fluoride concentration within recommended levels - between 0.7mg per liter and 1.2mg per liter. Just under half of them (47%) have fluoride concentration under ...
Water fluoridation, which is the act of adding fluoride to drinking water to reach a recommended level, is designed to help prevent cavities, the ADA explains. The ADA refers to this as a “cost ...
Fluoride will be removed from the drinking water in Stuart beginning Wednesday, Dec. 4 — at least temporarily — to shield people from what state health authorities say are potentially harmful ...
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