Metatartaric acid

Metatartaric acid
Idealized chemical structure of metartaric acid
Names
Other names
E353
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.116.846
EC Number
  • 609-694-5
E number E353 (antioxidants, ...)
  • InChI=1S/C8H8O10/c9-1(5(11)12)3-7(15)18-4(8(16)17-3)2(10)6(13)14/h1-4,9-10H,(H,11,12)(H,13,14)
    Key: KWBYTEOPKORPPY-UHFFFAOYSA-N
  • C1(C(=O)OC(C(=O)O1)C(C(=O)O)O)C(C(=O)O)O
Properties
(C4H4O5)n
Molar mass Variable
Appearance Off-white solid
Freely soluble
Solubility in ethanol Soluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Metatartaric acid is a food additive. Chemically, it is a polymeric lactone of variable composition and different molecular weights obtained through a dehydration reaction by heating tartaric acid.

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