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Trisodium citrate information


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
CAS Number
  • 68-04-2 checkY
  • 6132-04-3 (dihydrate) checkY
  • 6858-44-2 (pentahydrate) checkY
3D model (JSmol)
  • Interactive image
ChEMBL
  • ChEMBL1355 checkY
ChemSpider
  • 5989 checkY
ECHA InfoCard 100.000.614 Edit this at Wikidata
E number E331iii (antioxidants, ...)
PubChem CID
  • 6224
RTECS number
  • GE8300000
UNII
  • RS7A450LGA checkY
  • B22547B95K (dihydrate) checkY
CompTox Dashboard (EPA)
  • DTXSID2026363 Edit this at Wikidata
InChI
  • 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
SMILES
  • C(C(=O)[O-])C(CC(=O)[O-])(C(=O)[O-])O.[Na+].[Na+].[Na+]
Properties
Chemical formula
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
Solubility in water
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
Irritant
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
1
0
0
Lethal dose or concentration (LD, LC):
LD50 (median dose)
1548 mg/kg (intraperitoneal, rat)[3]
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 checkY☒N ?)
Infobox references

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.

  1. ^ "Sodium citrate | 68-04-2". Retrieved 14 December 2023.
  2. ^ "CRC Handbook of Chemistry and Physics". Retrieved 22 November 2013.
  3. ^ Chambers, Michael. "ChemIDplus - 68-04-2 - HRXKRNGNAMMEHJ-UHFFFAOYSA-K - Sodium citrate anhydrous - Similar structures search, synonyms, formulas, resource links, and other chemical information". chem.nlm.nih.gov.

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acidulatum), is an acid salt of citric acid. Disodium citrate and trisodium citrate are also known. It can be prepared by partial neutralisation of citric...

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reduced-osmolarity ORS include glucose, table salt, potassium chloride, and trisodium citrate. For general use, each packet should be mixed with a liter of water...

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with a microgram of plutonium. Hempelmann gave him a mouthwash of trisodium citrate, which would combine with the plutonium to form a soluble liquid,...

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