Trisodium citrate

Trisodium citrate has the chemical formula of 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.

Sodium citrate
Names
Preferred IUPAC name
Trisodium 2-hydroxypropane-1,2,3-tricarboxylate
Other names
Sodium citrate
Trisodium citrate
Citrosodine
Citric acid, trisodium salt
E331
Identifiers
3D model (JSmol)
ChEMBL
ChemSpider
ECHA InfoCard 100.000.614
E number E331iii (antioxidants, ...)
RTECS number
  • GE8300000
UNII
  • InChI=1S/C6H8O7.3Na/c7-3(8)1-6(13,5(11)12)2-4(9)10;;;/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12);;;/q;3*+1/p-3 N
    Key: HRXKRNGNAMMEHJ-UHFFFAOYSA-K N
  • InChI=1/C6H8O7.3Na/c7-3(8)1-6(13,5(11)12)2-4(9)10;;;/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12);;;/q;3*+1/p-3
    Key: HRXKRNGNAMMEHJ-DFZHHIFOAL
  • C(C(=O)[O-])C(CC(=O)[O-])(C(=O)[O-])O.[Na+].[Na+].[Na+]
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) Pentahydrate form: 92 g/100 g H2O (25 °C)
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Irritant
NFPA 704 (fire diamond)
1
0
0
Lethal dose or concentration (LD, LC):
1548 mg/kg (intraperitoneal, rat)
Safety data sheet (SDS) External MSDS
Related compounds
Related compounds
 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).
N verify (what is YN ?)
Infobox references
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