Names | |
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Preferred IUPAC name
Trisodium 2-hydroxypropane-1,2,3-tricarboxylate | |
Other names
Sodium citrate
Trisodium citrate Citrosodine Trisodium salt E331 | |
Identifiers | |
3D model (JSmol)
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ChEMBL | |
ChemSpider | |
ECHA InfoCard | 100.000.614 |
E number | E331iii (antioxidants, ...) |
PubChem CID
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RTECS number |
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UNII |
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CompTox Dashboard (EPA)
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Properties | |
Na3C6H5O7 | |
Molar mass | 258.06 g/mol (anhydrous), 294.10 g/mol (dihydrate) |
Appearance | White crystalline powder |
Density | 1.7 g/cm3 |
Melting point | > 300 °C (572 °F; 573 K) (hydrates lose water ca. 150 °C) |
Boiling point | Decomposes |
Anhydrous form:57 g/100 g H2O (25 °C) [1] Pentahydrate form: 92 g/100 g H2O (25 °C)[2] | |
Hazards | |
Occupational safety and health (OHS/OSH): | |
Main hazards
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Irritant |
NFPA 704 (fire diamond) | |
Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
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1548 mg/kg (intraperitoneal, rat)[3] |
Safety data sheet (SDS) | External MSDS |
Related compounds | |
Related compounds
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Monosodium citrate Disodium citrate Calcium citrate Citric acid |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Trisodium citrate has the molecular formula Na3C6H5O7. It is sometimes referred to simply as "sodium citrate", though sodium citrate can refer to any of the three sodium salts of citric acid. It possesses a saline, mildly tart flavor, and is a mild alkali.