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| Names | |
|---|---|
| IUPAC name disodium (2R,3R)-2,3-dihydroxybutanedioate | |
| Other names Sal tartar; Disodium tartrate; Bisodium tartrate; Sodiuml-(+)-tartrate; E335 | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider |
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| UNII |
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| Properties | |
| C4H4Na2O6 (anhydrous) C4H8Na2O8 (dihydrate) | |
| Molar mass | 194.051 g/mol (anhydrous) 230.082 g/mol (dihydrate) |
| Appearance | white crystals |
| Density | 1.545 g/cm3 (dihydrate) |
| soluble | |
| Solubility | insoluble inethanol |
| Pharmacology | |
| A06AD21 (WHO) | |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Sodium tartrate (Na2C4H4O6) is a salt used as anemulsifier and a binding agent in food products such asjellies,margarine, andsausage casings. As afood additive, it is known by theE number E335.
It is made by the combination reaction ofbaking soda/Sodium Bicarbonate (NaHCO₃) withtartaric acid.
Because itscrystal structure captures a very precise amount ofwater, it is also a common primary standard forKarl Fischer titration, a common technique to assay water content.
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