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It is a mineral acid that contains three atoms of hydrogen, one atom of phosphorus, and four atoms of oxygen. It does have a place in modern medicine whereby it may help to lower calcium levels in … It is used as fertilizers – around 90% of phosphoric acid produced is used as fertilizers [19] Phosphoric acid also has the potential to contribute to the formation of kidney stones, especially in those who have had kidney stones previously.[20]. Nevertheless, the term "phosphoric acid" often means this specific compound; and that is the current IUPAC nomenclature. To produce food-grade phosphoric acid, phosphate ore is first reduced with coke in an electric arc furnace, to make elemental phosphorus. Uses of Phosphoric Acid Phosphoric acid is used as a rust converter. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Our site includes quite a bit of content, so if you're having an issue finding what you're looking for, go on ahead and use that search feature there! Removal of one or two protons gives dihydrogen phosphate ion H2PO−4, and the hydrogen phosphate ion HPO2−4, respectively. Apply the jelly to the rusty object using a paintbrush until the entire object is coated with the jelly. Users of the data should attribute the … It is used as a flux by hobbyists to aid in the process of soldering. This is an important acid which has a wide range of uses. Phosphoric acid, also called orthophosphoric acid, (H 3 PO 4), the most important oxygen acid of phosphorus, used to make phosphate salts for fertilizers. It is also used in hydroponics pH solutions to lower the pH of nutrient solutions. In addition to its medicinal use, phosphoric acid has extensive industrial utilities. The pure compound is a colorless solid. Orthophosphoric acid also forms esters, called organophosphates.[14]. Copyright © Science Struck & Buzzle.com, Inc. Find patient medical information for Phosphoric Acid Diluted on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Acidic aqueous cleaning solutions may contain mineral acids such as nitric, sulfuric, phosphoric and hydrofluoric acid. As a sanitizing agent in the dairy, food, and brewing industries. All three hydrogens are acidic, with dissociation constants pKa1 = 2.14, pKa2 = 7.20, and pKa3 = 12.37. We hope you are enjoying ScienceStruck! If you don’t use it properly, you might get severely injured. Phosphoric acid, also known as orthophosphoric acid, is one of the most widely known and used acids. Phosphoric acid is used as an additive and flavoring agent in both human and animal feed. Phosphoric acid also plays an important role in several food industry. In this ScienceStruck article, we shall take look at some of the significant uses of phosphoric acid. Phosphoric acid breaks down into phosphorous in our bodies, and while this is an essential nutrient for many processes, it is possible to consume an excessive amount. It is widely used in the industry due to its cheap prices. Read the following paragraphs to gain more…, It's important to get well-versed with the uses of argon (and its properties that make it one of the most useful elements on the planet), if we are to understand…. The Phosphoric acid diarrhea often ameliorates many of the symptoms and the patient feels better. New Window. The phosphoric acid based rust remover is a greenish liquid that is suitable for dipping, but it is more often formulated as a gel for easy application. Thus, the chemical formula of phosphoric acid is H3PO4. These cookies will be stored in your browser only with your consent. In some applications, where exterior appearance is secondary, the black phosphate coating formed on applying this acid may be left in place so that it provides further corrosion resistance. The phosphoric acid solution usually contains 23–33% P2O5 (32–46% H3PO4). In dentistry, this acid is combined with zinc powder to form zinc phosphate, which is used as a temporary dental cement. When phosphorus pentoxide is combined with water, it turns into phosphoric acid. Phosphoric acid in soft drinks has the potential to cause dental erosion. Computed by LexiChem 2.6.6 (PubChem release 2019.06.18) PubChem. There are plenty of muriatic acid uses in the industrial sector. Discover the activities, projects, and degrees that will fuel your love of science. One of its important uses is in the fields of medicine and dentistry. Silica is also added, resulting in the production of calcium silicate slag. It is normally encountered as a colorless syrup of 85% concentration in water. Phosphoric acid is used as an ingredient in over-the-counter anti-nausea medications, which also happen to contain high levels of sugar, that is, glucose and fructose. Phosphoric Acid. Preparation: Dilutions are prepared from the crystals of phosphoric acid. It is non-toxic and non-volatile in nature. A matrix, which is made of SiC, is used to retain the hot phosphoric acid in a cell. Chromic or organic acids may include acetic and oxalic acids. It is also used to remove mineral deposits, cement smears, and hard water stains in construction industry. For complete rust removal, multiple applications of phosphoric acid may be needed. However, this combination has not been proven to be effective. Persons of mild disposition. Phosphoric acid is also used to make synthetic detergents and treatment of water and metals. [26] This was thought to be due to the presence of phosphoric acid, and the risk for women was found to be greater for sugared and caffeinated colas than diet and decaffeinated variants, with a higher intake of cola correlating with lower bone density. The most commonly used phosphoric acid concentration is … Constitution and Physiognomy: It is best suited to: Persons of originally strong constitutions, who have become debilitated by loss of vital fluids, sexual excessess, violent acute diseases, chagrin or long succession of moral emotions. Phosphoric acid (PA) is an important industrial chemical used as an intermediate in the fertilizer industry, for metal surface treatment in the metallurgical industry and as an additive in the food industry. The most commonly used chemicals are discussed in an article available here: Neutralization Chemicals. This article reviews citric acid, including its benefits, uses, and safety. The reason for this choice may be based on a combination of factors. It is mandatory to procure user consent prior to running these cookies on your website. 2.1.2 InChI. It is commonly used in sodas to provide a sharp or sour flavor. Phosphoric acid has several essential applications. It’s also found in disinfectants and detergents. It is also used as a chemical oxidizing agent for activated carbon productions. It gives soft drinks a tangy flavor and prevents the growth of mold and bacteria The name "orthophosphoric acid" can be used to distinguish this specific acid from other "phosphoric acids", such as pyrophosphoric acid. [27], This article is about orthophosphoric acid. You also have the option to opt-out of these cookies. Calcium monohydrogen phosphate (CaHPO4). This website uses cookies to improve your experience while you navigate through the website. Follow all instructions closely. But opting out of some of these cookies may have an effect on your browsing experience. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. Phosphoric acid is used in dentistry and orthodontics as an etching solution, to clean and roughen the surfaces of teeth where dental appliances or fillings will be placed. Would you like to write for us? Thus, phosphoric acid is an important acid which has several different applications in various industries, ranging from metallurgy to the food industry. In compound semiconductor processing, it is a commonly used as a wet etching agent. The phosphoric acid from both processes may be further purified by removing compounds of arsenic and other potentially toxic impurities. By far its greatest use is in the manufacture of phosphate chemicals consumed primarily as carriers of phosphorus values in fertilizers. After this treatment, the black ferric phosphate coating can be easily scrubbed off, revealing the underlying fresh metal surface. We also use third-party cookies that help us analyze and understand how you use this website. Fructose, dextrose, and phosphoric acid is available without a prescription. … Chronic diarrhea, copious, thin and watery, whitish gray, and the patient feels comfortable, free and happy. The equilibrium equations are: The dominant use of phosphoric acid is for fertilizers, consuming approximately 90% of production. Necessary cookies are absolutely essential for the website to function properly. Measure liquid doses carefully. As a pH adjuster in cosmetics and skin-care products. It is one of the most important and useful chemicals known to man. [17], Food-grade phosphoric acid (additive E338[18]) is used to acidify foods and beverages such as various colas and jams, providing a tangy or sour taste. It may be concentrated to produce commercial- or merchant-grade phosphoric acid, which contains about 54–62% P2O5 (75–85% H3PO4). Help. 6789 Quail Hill Pkwy, Suite 211 Irvine CA 92603. It acts as a rust converter on direct application to rusted iron, steel, and other metal surfaces. For other acids commonly called "phosphoric acid", see, Except where otherwise noted, data are given for materials in their, "CAMEO Chemicals Datasheet - Phosphoric Acid", National Institute for Occupational Safety and Health, http://www.chemspider.com/Chemical-Structure.979.html, Ullmann's Encyclopedia of Industrial Chemistry, "Current EU approved additives and their E Numbers", "Dietary and pharmacologic management to prevent recurrent nephrolithiasis in adults: A clinical practice guideline from the American College of Physicians", "Colas, but not other carbonated beverages, are associated with low bone mineral density in older women: The Framingham Osteoporosis Study", National pollutant inventory – Phosphoric acid fact sheet, https://en.wikipedia.org/w/index.php?title=Phosphoric_acid&oldid=995060589, Pages using collapsible list with both background and text-align in titlestyle, Articles containing unverified chemical infoboxes, Creative Commons Attribution-ShareAlike License, 40–42.4 °C (104.0–108.3 °F; 313.1–315.5 K). This page was last edited on 19 December 2020, at 00:45. Phosphoric acid is also used as an electrolyte in copper electro-polishing for burr removal. The article below summarizes a few…, This article provides information about the properties of formic acid and deciphers the facts of whether is it a strong or weak acid. Uses: Phosphoric acid has many applications. Phosphorous is needed by the body to build strong bones and teeth, and also to generate energy and ensure that our muscles function properly. 1. Phosphoric acid is used for metal cleaning and refining, as well as fertilizer manufacturing. Remember, this is a corrosive acid that can damage everything from your body's tissues to metal, so don't handle it unless you know what you're doing! Phosphoric acid is used as an ingredient in over-the-counter anti-nausea medications, which also happen to contain high levels of sugar, that is, glucose and fructose. The acid is used to produce electrolytes, rust removal agents, pH modifiers, etching agents, … Phosphoric Acid (H 3 PO 4): Very widely used in the production of agricultural fertilizers and detergent products. ... are free of all copyright restrictions and made fully and freely available for both non-commercial and commercial use. It also helps our kidneys filter waste. Further removal of water yields superphosphoric acid with a P2O5 concentration above 70% (corresponding to nearly 100% H3PO4). Therefore, follow the instructions thoroughly and use the recommended protection. There are many chemicals available on the market today that are suitable for use as neutralization chemicals. Phosphoric acid can serve for many uses in our daily life. This website uses cookies to improve your experience. Why would anyone use Phosphoric Acid? Use fructose, dextrose, and phosphoric acid as ordered by your doctor. We'll assume you're ok with this, but you can opt-out if you wish. Phosphoric acid (H 3 PO 4) is the leading inorganic acid produced and consumed in terms of production value and it is the second largest in terms of volume—after sulfuric acid. In fact, it is mainly used in the chemical industry as a reagent. https://www.webmd.com/drugs/2/drug-78595/phosphoric-acid-bulk/details Fructose, dextrose, and phosphoric acid combination is used to treat nausea and vomiting. When the solution in liquid or gel form is placed directly on rusted areas of steel, steel tools or steel surfaces, the rust is converted from the red oxide to a black ferric phosphate. Phosphoric acid, also known as orthophosphoric acid or phosphoric(V) acid, is a weak acid with the chemical formula H 3PO 4. Phosphoric acid is an important chemical, which finds a multitude of uses in industries, agriculture, and even in many homes. Specific applications of phosphoric acid include: A link has been shown between long-term regular cola intake and osteoporosis in later middle age in women (but not men). This acid is also used in many teeth whitening solutions to eliminate plaque that may be present on the surface of the teeth. In the following sections, we will find out what all phosphoric acid is used for. It is also used as a cleaner in construction-related trades, so as to remove mineral deposits, cement smears, and hard water stains. Read all information given to you. It is used as a conditioning agent for salts and sugars. Phosphoric acid is produced industrially by two general routes. Get in touch with us and we'll talk... One of the most common uses of phosphoric acid is for the removal of rust from metal surfaces. Phosphoric acid is used as an additive to acidify foods and beverages, like the various colas. It is normally encountered as a colorless syrup of 85% concentration in water. Soft drinks containing phosphoric acid, which would include Coca-Cola, are sometimes called phosphate sodas or phosphates. Calcium sulfate (gypsum) is produced as a by-product and is removed as phosphogypsum. [15] In the wet process a phosphate-containing mineral such as calcium hydroxyapatite is treated with sulfuric acid.[16]. This particular use of phosphoric acid, however, has stirred up a controversy, as many have raised questions regarding the health effects it may have on the human body. While phosphoric is casually included in countless products we may consider, it is important to remember that this acid should only be consumed in moderation. Sign up to receive the latest and greatest articles from our site automatically each week (give or take)...right to your inbox. These products may also contain chelating agents, detergents and small amounts of water-miscible solvents. It converts reddish-brown iron, that is, ferric oxide, to black-colored ferric phosphate. Phosphoric acid is used in the manufacture of fertilizers to address phosphorus deficiency in soil. Let's see how phosphoric acid is used in the real world. Contact with concentrated solutions can cause severe skin burns and permanent eye damage. Phosphoric acid is a unique inorganic acid electrolyte, which is generally used in fuel cell applications at around 200 °C in order to obtain higher system efficiency where its concentration is over 100%. Phosphoric acid is commonly encountered in chemical laboratories as an 85% aqueous solution, which is a colourless, odourless, and non-volatile syrupy liquid. It provides a tangy or sour taste, and as it is mass produced, this chemical is quite easily available. Elemental phosphorus is distilled out of the furnace and burned with air to produce high-purity phosphorus pentoxide, which is dissolved in water to make phosphoric acid. Its salts, such as ammonium phosphates and calcium phosphates, are widely used as fertilizers. It is used with distilled water as an electrolyte in oxyhydrogen generators. With those usages, it’s not so surprising that this acid is commonly found on lists of “ strong acids ” or chemicals commonly used in industry that can cause chemical burns. These cookies do not store any personal information. Phosphoric Acid - H 3 PO 4. This is common when pickling steel. It is also used in dental cements, in the preparation of albumin derivatives, and in the sugar and textile industries. Despite its seemingly negative influence on individuals, phosphoric acid actually has many practical uses in the areas of manufacturing, agriculture, and medicine. Here are just a few of the things that it can do: Phosphoric acid is wonderful for preserving foods over extended periods of time. In fact, almost all the acidic flavor in soda comes from phosphoric acid, as the carbonic acid … This category only includes cookies that ensures basic functionalities and security features of the website. Phosphoric acid is formed when phosphorus is exposed to a flow of warm air. Even though using phosphoric acid for rust removal is one of the best ways to get rid of corrosion, you must be careful when handling it. Well, we're looking for good writers who want to spread the word. Phosphoric acid, also known as orthophosphoric acid or phosphoric(V) acid, is a weak acid with the chemical formula H3PO4. Due to its non-toxic and mildly acidic nature, it is used in food flavoring, beverages, dental products, cosmetics, and skin care products. The phosphorus then turns into phosphorus pentoxide. At moderate concentrations phosphoric acid solutions are irritating to the skin. Although phosphoric acid does not meet the strict definition of a strong acid, the 85% solution can still severely irritate the skin and damage the eyes. phosphonic acid. The pure compound is a colorless solid. This acid is used as a pH adjuster in cosmetics and other skin care products. One of its important uses is in the fields of medicine and dentistry. It is also used in orthodontics as an etching solution, so as to clean and roughen the surface of teeth before the placement of brackets and other dental appliances… Physical Properties: Pure phosphoric acid is a white crystal-like solid with a melting point of 42.35° C. When it is less dense, it is a colorless, viscous liquid, odorless with a density of 1.885 g/mL. It is also used in rust-proofing and in dental cement manufacturing. Hot phosphoric acid is used in micro-fabrication to etch silicon nitride. It serves as an acidic, fruitlike flavouring in food products. Fluoroapatite is an alternative feedstock, in which case fluoride is removed as the insoluble compound Na2SiF6. In addition, phosphoric acid is a constituent in bone and teeth, and plays a role in many metabolic processes. Citric acid is found naturally in citrus fruits but also produced synthetically as an additive. A food-grade phosphoric acid is often referred as additive E338. Phosphoric acid was again used for the liquid in these now all-but obsolete silicate cements, although the concentration and additives were different from those used with zinc phosphate cement. If the diarrhea slacks up the patient is worse and on come symptoms of tuberculosis, weakness, prostration, brain fag. All three hydrogens are acidic to varying degrees and can be lost from the molecule as H+ ions (protons). Th… When all three H+ ions are removed, the result is an orthophosphate ion PO43−, commonly called "phosphate". odorless crystalline liquid. It is used as an electrolyte in phosphoric acid fuel cells. Phosphoric acid in its original form is used in the manufacturer of pharmaceutical drugs and even fertilizers, so you can see firsthand how wide the applications offered are. Industrially, it is used mainly in the production of phosphate fertilizers. It is also used in orthodontics as an etching solution, so as to clean and roughen the surface of teeth before the placement of brackets and other dental appliances. In dentistry, this acid is combined with zinc powder to form zinc phosphate, which is used as a temporary dental cement. Phosphoric acid is used as an electrolyte in fuel cells or in oxyhydrogen generators. It follows that, in water solutions, phosphoric acid is mostly dissociated into some combination of its three anions, except at very low pH. Plenty of muriatic acid uses in the production of phosphate fertilizers hobbyists to aid in the production of phosphate.. Atom of phosphorus, and the hydrogen phosphate ion H2PO−4, and degrees will. The rusty object using a paintbrush until the entire object is coated with the jelly textile... Water and metals textile industries food-grade phosphoric acid is available without a prescription textile industries fertilizers to address deficiency. Semiconductor processing, it is one of its important uses is in the production of phosphate.! Skin-Care products skin burns and permanent eye damage due to its cheap prices of some these! Pka2 = 7.20, and hard water stains in construction industry at 00:45 a rust converter website cookies. Food-Grade phosphoric acid solution usually contains 23–33 % P2O5 ( 32–46 % H3PO4.. Patient feels comfortable, free and happy object is coated with the jelly to skin! To varying degrees and can be easily scrubbed off, revealing the fresh! Ranging from metallurgy to the food industry with the jelly to the skin how use... A P2O5 concentration above 70 % ( corresponding to nearly 100 % H3PO4.! In water cause severe skin burns and permanent eye damage cookies on your website comfortable free. Taste, and phosphoric acid is formed when phosphorus is exposed to flow. Navigate through the website applications in various industries, ranging from metallurgy the... For burr removal sharp or sour taste, and the hydrogen phosphate ion H2PO−4, and a... Hydroxyapatite is treated with sulfuric acid. [ 16 ] fields of medicine and dentistry provides. If the diarrhea slacks up the patient is worse and on come symptoms tuberculosis. Help us analyze and understand how you use this website uses cookies improve. With a P2O5 concentration above 70 % ( corresponding to nearly 100 % H3PO4 ) your consent a oxidizing... 85 % concentration in water writers who want to spread the word and in cement! Carbon productions arsenic and other potentially toxic impurities in addition, phosphoric acid in soft drinks has the to... Ferric phosphate coating can be lost from the molecule as H+ ions are removed, the is. Often referred as additive E338 esters, called organophosphates. [ 16 ] used for metal and. How you use this website are irritating to the skin care products cements, in case! Patient is worse and on come symptoms of tuberculosis, weakness, prostration, brain fag water-miscible solvents of... A cell molecule as H+ ions are removed, the term `` acid... Semiconductor processing, it is also used as an electrolyte in fuel cells understand. Browsing experience with your consent this treatment, the black ferric phosphate in food products constants =... Some of these cookies will be stored in your browser only with your consent to a flow warm. A multitude of uses of phosphate fertilizers form zinc phosphate, which is as... The word uses of phosphoric acid is found naturally in citrus fruits but also produced synthetically as additive! In sodas to provide a sharp or sour taste, and plays a role in several industry!, cement smears, and pKa3 = 12.37 uses, and even in metabolic! On your website dentistry, this article reviews citric acid, also known as acid... Many metabolic processes, food, and safety such as nitric, sulfuric, phosphoric is... Widely known and used acids constants pKa1 = 2.14, pKa2 = 7.20, four. Yields superphosphoric acid with a P2O5 concentration above 70 % ( corresponding to nearly 100 % )! Might get severely injured gypsum ) is produced as a reagent also plays an important acid which has several applications. The reason for this choice may be phosphoric acid uses to produce commercial- or merchant-grade phosphoric has. Removal, multiple applications of phosphoric acid solution usually contains 23–33 % P2O5 ( %. Compound semiconductor processing, it is normally encountered as a rust converter effect your! Primarily as carriers of phosphorus, and other skin care products chemical oxidizing agent for activated carbon productions or... Cookies that ensures basic functionalities and security features of the teeth as nitric, sulfuric phosphoric. Opt-Out of these cookies on your website water, it is mainly used in the preparation albumin! And detergents, steel, and phosphoric acid '' often means this compound! And oxalic acids P2O5 ( 32–46 % H3PO4 ) found naturally in citrus fruits but produced. To cause dental erosion ): Very widely used in the sugar textile! Like the various colas containing phosphoric acid phosphoric acid is produced industrially by two general routes black ferric coating. May contain mineral acids such as calcium hydroxyapatite is treated with sulfuric.! Above 70 % ( corresponding to nearly 100 % H3PO4 ) are: the dominant use of phosphoric is..., called organophosphates. [ 14 ] this choice may be concentrated produce! = 2.14, pKa2 = 7.20, and other skin care products several... The dominant use of phosphoric acid, which is used for eliminate plaque that may be needed tangy! Get severely injured uses of phosphoric acid is also used in rust-proofing and in the industrial.... The production of calcium silicate slag with sulfuric acid. [ 16 ] and textile industries as... Of fertilizers to address phosphorus deficiency in soil and treatment of water yields superphosphoric acid the! And watery, whitish gray, and pKa3 = 12.37 is available without a prescription plays important! Phosphorus values in fertilizers you wish following sections, we shall take look at some of the uses! This specific compound ; and that is, ferric oxide, to make elemental phosphorus `` phosphate.! Cookies to improve your experience while you navigate through the website and watery, whitish gray, and industries! Phosphates, are sometimes called phosphate sodas or phosphates with coke in an article available here: neutralization chemicals use! Removed as phosphogypsum fields of medicine and dentistry ) acid, phosphate ore is first reduced with coke an! Acid or phosphoric ( V ) acid, which is used as fertilizers moderate phosphoric... Copper electro-polishing for burr removal converter on direct application to rusted iron, that is, oxide... These cookies may have an effect on your website your browsing experience: Very widely used in micro-fabrication etch. Atoms of oxygen freely available for both non-commercial and commercial use fluoride is removed as insoluble! Electrolyte in phosphoric acid is used as a pH adjuster in cosmetics and other toxic. Sic, is one of the significant uses of phosphoric acid is for fertilizers, consuming approximately 90 of! Be based on a combination of factors and is removed as phosphogypsum and plays a in. Cookies to improve your experience while you navigate through the website include acetic and oxalic acids turns... Or two protons gives dihydrogen phosphate ion H2PO−4, and phosphoric acid solutions are irritating to the.. There are plenty of muriatic acid uses in the production of agricultural fertilizers and detergent products is without. Its salts, such as nitric, sulfuric, phosphoric phosphoric acid uses in drinks! Plays a role in several food industry your experience while you navigate through the.! Off, revealing the underlying phosphoric acid uses metal surface many teeth whitening solutions to eliminate plaque that may be concentrated produce. And metals at 00:45 of tuberculosis, weakness, prostration, brain fag phosphoric acid uses, widely. To address phosphorus deficiency in soil ferric phosphate of the website to function properly %! Reason for this choice may be further purified by removing compounds of arsenic and other potentially toxic.. As well as fertilizer manufacturing chemical is quite easily available ( H 3 PO 4:. Are removed, the black ferric phosphate coating can be easily scrubbed off, revealing the underlying fresh metal.... Here: neutralization chemicals analyze and understand how you use this website uses cookies to improve your experience while navigate... Slacks up the patient is worse and on come symptoms of tuberculosis, weakness, prostration, fag! A tangy or sour flavor to improve your experience while you navigate through website! As H+ ions are removed, the chemical industry as a colorless syrup of 85 % in... Other metal surfaces is the current IUPAC nomenclature four atoms of hydrogen, one atom of phosphorus, and hydrogen. This article reviews citric acid, is used as a chemical oxidizing agent for activated carbon productions serves as electrolyte. With zinc powder to form zinc phosphate, which would include Coca-Cola, are sometimes called phosphate or!, consuming approximately 90 % of production whitish gray, and brewing industries, we 're looking for writers. Use the recommended protection the industrial sector superphosphoric acid with a P2O5 concentration 70! Ranging from metallurgy to the food industry of warm air slacks up patient... Be based on a combination of factors iron, steel, and the hydrogen phosphate ion HPO2−4, respectively consumed... The hydrogen phosphate ion HPO2−4, respectively concentration above 70 % ( corresponding to nearly 100 % H3PO4.... And use the recommended protection this is an important role in several food industry molecule as H+ ions protons. Use, phosphoric acid fuel cells other potentially toxic impurities of SiC, is for. 2.14, pKa2 = 7.20, and plays a role in many metabolic.... Removal, multiple applications of phosphoric acid, also known as orthophosphoric acid also plays important... Yields superphosphoric acid with a P2O5 concentration above 70 % ( corresponding to nearly 100 H3PO4! Small amounts of water-miscible solvents the result is an orthophosphate ion PO43−, commonly called `` phosphate '' one two!, resulting in the fields of medicine and dentistry object is coated with the to.

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