Phosphate soda

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A soda jerk at Franklin Fountain in Philadelphia holds up his phosphate bottle. Soda jerk with bottle of phosphoric acid, Franklin Fountain, Philadelphia, Pennsylvania - 20110501.jpg
A soda jerk at Franklin Fountain in Philadelphia holds up his phosphate bottle.

Phosphate soda is a type of beverage that has a tangy or sour taste. These beverages became popular among children in the 1870s in the United States. Phosphate beverages were made with fruit flavorings, egg, malt, or wine. In the 1900s, the beverages became popular, and fruit-flavoured phosphate sodas were served at soda fountains, before losing popularity to ice cream-based treats in the 1930s. [1]

Phosphoric acid is used in many bottled soft drinks, including Coca-Cola. The original acid phosphate, made by the Horsford Chemical Company, was a mixture of calcium, magnesium and potassium phosphate salts with a small amount of phosphoric acid producing a liquid mixture with a pH of around 2 to 3, the same as freshly squeezed lime juice.

Horsford used bone ash, which is mostly calcium phosphate. In the 21st century, bone ash is used primarily in the ceramics industry, and is rarely available as food grade stock. The ingredients can, however, be synthesized from modern food-grade chemicals.

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In chemistry, a phosphate is an anion, salt, functional group or ester derived from a phosphoric acid. It most commonly means orthophosphate, a derivative of orthophosphoric acid, AKA phosphoric acid H3PO4.

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Trisodium phosphate (TSP) is the inorganic compound with the chemical formula Na3PO4. It is a white, granular or crystalline solid, highly soluble in water, producing an alkaline solution. TSP is used as a cleaning agent, builder, lubricant, food additive, stain remover, and degreaser.

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Bone ash is a white material produced by the calcination of bones. Typical bone ash consists of about 55.82% calcium oxide, 42.39% phosphorus pentoxide, and 1.79% water. The exact composition of these compounds varies depending upon the type of bones being used, but generally the formula for bone ash is: Ca5(OH)(PO4)3. Bone ash usually has a density around 3.10 g/mL and a melting point of 1670 °C (3038 °F). Most bones retain their cellular structure through calcination.

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<span class="mw-page-title-main">Tricalcium phosphate</span> Chemical compound

Tricalcium phosphate (sometimes abbreviated TCP), more commonly known as Calcium phosphate, is a calcium salt of phosphoric acid with the chemical formula Ca3(PO4)2. It is also known as tribasic calcium phosphate and bone phosphate of lime (BPL). It is a white solid of low solubility. Most commercial samples of "tricalcium phosphate" are in fact hydroxyapatite.

<span class="mw-page-title-main">Monocalcium phosphate</span> Chemical compound

Monocalcium phosphate is an inorganic compound with the chemical formula Ca(H2PO4)2 ("AMCP" or "CMP-A" for anhydrous monocalcium phosphate). It is commonly found as the monohydrate ("MCP" or "MCP-M"), Ca(H2PO4)2·H2O. Both salts are colourless solids. They are used mainly as superphosphate fertilizers and are also popular leavening agents.

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References

  1. Smith, Andrew F. (2007). The Oxford Companion to American Food and Drink. New York: Oxford University Press. pp. 478–. ISBN   978-0-19-530796-2 . Retrieved 1 April 2011.

Further reading