Disodium citrate

Chemical compound From Wikipedia, the free encyclopedia

Disodium citrate, also known as disodium hydrogen citrate, (Neo-Alkacitron) and sesquihydrate, is an acid salt of citric acid with the chemical formula Na2C6H6O7.[2] It is used as an antioxidant in food and to improve the effects of other antioxidants. It is also used as an acidity regulator and sequestrant. Typical products include gelatin, jam, sweets, ice cream, carbonated beverages, milk powder, wine, and processed cheeses.

Quick facts Names, Identifiers ...
Disodium citrate
Names
IUPAC name
Disodium 3-carboxy-3-hydroxypentanedioate[1]
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.005.113 Edit this at Wikidata
EC Number
  • 205-623-3
E number E331ii (antioxidants, ...)
RTECS number
  • GE7580000
UNII
  • InChI=1S/C6H8O7.2Na/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;2*+1/p-2
    Key: CEYULKASIQJZGP-UHFFFAOYSA-L
  • C(C(=O)[O-])C(CC(=O)[O-])(C(=O)O)O.[Na+].[Na+]
Properties
C6H6Na2O7
Molar mass 236.087 g·mol−1
Appearance white crystalline powder
Melting point 149 °C (300 °F; 422 K)
Hazards
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 0: Exposure under fire conditions would offer no hazard beyond that of ordinary combustible material. E.g. sodium chlorideFlammability 1: Must be pre-heated before ignition can occur. Flash point over 93 °C (200 °F). E.g. canola oilInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
0
1
0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Uses

Food

It is used as an antioxidant in food and to improve the effects of other antioxidants.[3] It is also used as an acidity regulator and sequestrant.[3] Typical products include gelatin, jam, sweets, ice cream, carbonated beverages, milk powder, wine, and processed cheeses. Disodium citrate can also be used as a thickening agent or stabilizer.[4]

Manufacturing

Disodium citrate can also be used as an ingredient in household products that remove stains.[5]

Health

Disodium citrate may be used in patients to alleviate discomfort from urinary-tract infections.[6][7]

References

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