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Sodium salts aresalts composed of asodium cation and anyanion. The anion may be theconjugate base of someinorganic ororganic acids, or any monatomic orpolyatomic anion. They can be formed by theneutralization of acids withsodium hydroxide.
Sodium salts can be categorized into:
| Sodium salts of somefatty acids |
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Inpharmaceutical technology acidic pharmaceutical substances are often converted into sodium salts, because they are more stable, more soluble or membrane-permeable (bioavailable) than the base compound. Examples of such sodium salts are (selection):Bispyribac,bithionol,bosentan,brequinar,bromfenac,Cefmenoxime,ceftiofur,citicoline,cromolyn,diclofenac,Flucloxacillin,fosinopril,Mordant brown 33,naproxen,Netobimin,ozagrel,pantoprazole,pemetrexed,secobarbital,sitamaquin,sitaxentan,sulfamiderazin,sulfapyridine,sulfaquinoxaline,sulfathiazole,sulfazecin,thiamylal andmesna.[1] Most of these salts are sodium salts of organic carboxylic acids or sulfonic acids.
Herbicides are often used as sodium salts for the reasons discussed above. One example is the sodium salt of methylflupyrsulfuron.[2]
Sodium salts of long chain sulfonic acids (e.g.sodium lauryl sulfate) are often included intoothpaste andshampoo. The sodium salts of fatty acids may serve as soaps and can therefore be called sodium soaps.
Sodium salts of certain aromatic sulfonic acids—particularlynaphthalenesulfonic acid—are used in the preparation ofazo dyes.
Examples of important inorganic sodium salts aresodium fluoride,sodium chloride,sodium bromide,sodium iodide,sodium sulfate,sodium bicarbonate andsodium carbonate.Sodium amide (NaNH2) is the sodium salt ofammonia (NH3).