Dipotassium phosphate
In this article we will delve into Dipotassium phosphate, a topic of great relevance today. Dipotassium phosphate is a point of interest that has captured the attention of experts, academics and the general public due to its impact on various aspects of daily life. Through detailed analysis and exhaustive exploration of its different aspects, we seek to better understand the implications of Dipotassium phosphate in today's world. Furthermore, we will examine its evolution over time and its influence in different fields, in order to offer a comprehensive vision that enriches the debate around this topic. Without a doubt, Dipotassium phosphate is a topic that arouses great interest and controversy, so it is essential to address it with the seriousness and depth it deserves.
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| Names | |
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| IUPAC name
Potassium hydrogen phosphate
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| Other names
Potassium monohydrogen phosphate
Phosphoric acid dipotassium salt Potassium phosphate dibasic | |
| Identifiers | |
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3D model (JSmol)
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| ChEBI | |
| ChEMBL | |
| ChemSpider | |
| ECHA InfoCard | 100.028.940 |
| EC Number |
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| E number | E340(ii) (antioxidants, ...) |
PubChem CID
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| UNII |
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CompTox Dashboard (EPA)
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| Properties | |
| K2HPO4 | |
| Molar mass | 174.2 g/mol |
| Appearance | white powder deliquescent |
| Odor | odorless |
| Density | 2.44 g/cm3 |
| Melting point | > 465 °C (869 °F; 738 K) decomposes |
| 149.25 g/100 mL (20 °C) | |
| Solubility | slightly soluble in alcohol |
| Acidity (pKa) | 12.4 |
| Basicity (pKb) | 6.8 |
| Hazards | |
| NFPA 704 (fire diamond) | |
| Flash point | Non-flammable |
| Related compounds | |
Other cations
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Disodium phosphate Diammonium phosphate |
Related compounds
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Monopotassium phosphate Tripotassium phosphate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa).
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Dipotassium phosphate (K2HPO4) (also dipotassium hydrogen orthophosphate; potassium phosphate dibasic) is the inorganic compound with the formula K2HPO4.(H2O)x (x = 0, 3, 6). Together with monopotassium phosphate (KH2PO4.(H2O)x), it is often used as a fertilizer, food additive, and buffering agent.[1] It is a white or colorless solid that is soluble in water.
It is produced commercially by partial neutralization of phosphoric acid with two equivalents of potassium chloride:[1]
- H3PO4 + 2 KCl → K2HPO4 + 2 HCl
Uses
As a food additive, dipotassium phosphate is used in imitation dairy creamers, dry powder beverages, mineral supplements, and starter cultures.[2] It functions as an emulsifier, stabilizer and texturizer; it also is a buffering agent, and chelating agent especially for the calcium in milk products..[3]
As a food additive, dipotassium phosphate is generally recognized as safe by the United States Food and Drug Administration,[4] and is commonly used (in conjunction with other inorganic salts) to add taste to bottled water.[5]
References
- ^ a b Klaus Schrödter; Gerhard Bettermann; Thomas Staffel; Friedrich Wahl; Thomas Klein; Thomas Hofmann (2012). "Phosphoric Acid and Phosphates". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a19_465.pub3. ISBN 978-3-527-30673-2.
- ^ John H. Thorngate III; Seppo Salminen; Larry A. Branen; Michael P. Davidson, eds. (2001). "Food Phosphates". Food Additives. Food Science and Technology. Vol. 116. CRC Press. doi:10.1201/9780824741709.ch25 (inactive 2024-11-11). ISBN 978-0-8247-9343-2.
{{cite book}}: CS1 maint: DOI inactive as of November 2024 (link) - ^ "What is dipotassium phosphate?". 30 April 2018. Retrieved 2020-09-09.
- ^ "Database of Select Committee on GRAS Substances (SCOGS) Reviews". Archived from the original on 2007-05-21. Retrieved 2008-03-22. (listed as "potassium phosphate, dibasic")
- ^ "Brands Of Bottled Water With Electrolytes (Confirmed By Lab Tests) - Water Purification Guide".
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