Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Chemical compound
Sodium aluminium phosphate (SAlP) describes the inorganic compounds consisting of sodium salts of aluminium phosphates. The most common SAlP has the formulas NaH14Al3(PO4)8·4H2O and Na3H15Al2(PO4)8.[1] These materials are prepared by combining alumina, phosphoric acid, and sodium hydroxide.[2]
In addition to the usual hydrate, an anhydrous SAlP is also known, Na3H15Al2(PO4)8
(CAS#10279-59-1), referred to as 8:2:3, reflecting the ratio of phosphate to aluminium to sodium. Additionally an SAlP of ill-defined stoichiometry is used (NaxAly(PO4)z (CAS# 7785-88-8).[3]
The acidic sodium aluminium phosphates are used as acids for baking powders for the chemical leavening of baked goods.[4] Upon heating, SAlP combines with the baking soda to give carbon dioxide. Most of its action occurs at baking temperatures, rather than when the dough or batter is mixed at room temperature. SAlPs are advantageous because they impart a neutral flavor.
As a food additive, it has the E number E541.[5][6] Basic sodium aluminium phosphates are also known, e.g., Na15Al3(PO4)8. These species are useful in cheese making.[2]
^Klaus Schrödter, Gerhard Bettermann, Thomas Staffel, Friedrich Wahl, Thomas Klein, Thomas Hofmann "Phosphoric Acid and Phosphates" in Ullmann’s Encyclopedia of Industrial Chemistry 2008, Wiley-VCH, Weinheim. doi:10.1002/14356007.a19_465.pub3
^ ab"Phosphoric Acids and Phosphates" David R. Gard, 2005, Wiley-VCH. doi:10.1002/0471238961.1608151907011804.a01.pub2
^Lampila, Lucina E. (2013). "Applications and functions of food-grade phosphates". Ann. N.Y. Acad. Sci. 1301 (1): 37–44. Bibcode:2013NYASA1301...37L. doi:10.1111/nyas.12230. PMID 24033359.
^Brooks, David W. "Leavening Agents". Teaching and Research Web Site. University of Nebraska - Lincoln. Archived from the original on 2011-07-20. Retrieved 2011-03-06.
Sodiumaluminiumphosphate (SAlP) describes the inorganic compounds consisting of sodium salts of aluminiumphosphates. The most common SAlP has the formulas...
Many forms of baking powder contain sodium bicarbonate combined with calcium acid phosphate, sodiumaluminiumphosphate, or cream of tartar. Baking soda...
compounds are known, such as the basic sodiumaluminium carbonate mineral dawsonite (NaAlCO3(OH)2) and hydrated basic aluminium carbonate minerals scarbroite...
to be aluminium hydroxide, is an aluminiumphosphate. Nonetheless, both gibbsite and hydrargillite refer to the same polymorphism of aluminium hydroxide...
Sodium aluminate is an inorganic chemical that is used as an effective source of aluminium hydroxide for many industrial and technical applications. Pure...
co-mingled with the phosphate ores to produce hexafluorosilicic acid (H2SiF6). The majority of the hexafluorosilicic acid is converted to aluminium fluoride and...
fluorophosphate mineral, (Li,Na)AlPO4(F,OH), composed of lithium, sodium, aluminium, phosphate, fluoride and hydroxide. The mineral occurs in pegmatite deposits...
County, New Hampshire. Brazilianite, NaAl3(PO4)2(OH)4 is a hydrous sodiumaluminiumphosphate that forms through the metasomatic alteration of amblygonite-montebrasite...
Wardite is a hydrous sodiumaluminiumphosphate hydroxide mineral with formula: NaAl3(PO4)2(OH)4·2(H2O). Wardite is of interest for its rare crystallography...
spraying, or immersion. Phosphate conversion coatings can also be used on aluminium, zinc, cadmium, silver and tin. The phosphatizing of firearms was discovered...
Sodiumaluminium sulfate is the inorganic compound with the chemical formula NaAl(SO4)2·12H2O (sometimes written Na2SO4·Al2(SO4)3·24H2O). Also known as...
pyrophosphate (Na2H2P2O7), and sodiumaluminiumphosphates (NaH14Al3(PO4)8·4H2O and Na3H15Al2(PO4)8). These compounds combine with sodium bicarbonate to give carbon...
and is used extensively in the industrial production of aluminium. The compound is the sodium (Na+) salt of the hexafluoroaluminate (AlF63−) ion. Most...
cement. Many aluminium compounds have niche applications, for example: Aluminium acetate in solution is used as an astringent. Aluminiumphosphate is used...
aluminium germanium phosphate LISICON Solid-state electrolyte Sodium-ion battery Lithium-ion battery Fergus, J. W. (2012). "Ion transport in sodium ion...
electrolytic capacitors. Anodic films are most commonly applied to protect aluminium alloys, although processes also exist for titanium, zinc, magnesium, niobium...
(PO(OH)3), sodium fluorosilicate, aluminiumphosphate etc.. Before application water solution of sodium silicate is mixed with curing agent. Sodium silicate...
phosphoric acid A number of copper phosphate minerals, including : Turquoise, a hydrated basic copper aluminiumphosphate, CuAl6(PO4)4(OH)8·4H2O Pseudomalachite...
(NaNO3), di- and tri-sodium phosphates, sodium thiosulfate (Na2S2O3·5H2O), and borax (Na2B4O7·10H2O). In compounds, sodium is usually ionically bonded...
Pierre Seignette, of La Rochelle, France. Potassium sodium tartrate and monopotassium phosphate were the first materials discovered to exhibit piezoelectricity...
diphosphate anti-caking agent 541 A E U sodiumaluminiumphosphate acidity regulator, emulsifier 542 A U bone phosphate anti-caking agent 544 U calcium polyphosphates...
It should not be confused with sodiumphosphate, Na3PO4. In addition to Na3P, five other binary compositions of sodium and phosphorus are known: NaP,...
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