Metatartaric acid
![]() Idealized chemical structure of metartaric acid | |
Names | |
---|---|
Other names E353 | |
Identifiers | |
CAS Number |
|
ECHA InfoCard | 100.116.846 ![]() |
E number | E353 (antioxidants, ...) |
Properties | |
Chemical formula | (C4H4O5)n |
Molar mass | Variable |
Appearance | Off-white solid[1] |
Solubility in water | Freely soluble[1] |
Solubility in ethanol | Soluble[1] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references |
Chemical compound
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.[2]
Uses
As a food additive, it has the E number E353 and is classified as an acidity regulator.[1] It is added to wine to prevent the precipitation of potassium hydrogen tartrate and calcium tartrate.[3]
References
- ^ a b c d Younes M, Aquilina G, Castle L, Engel KH, Fowler P, Frutos Fernandez MJ, et al. (March 2020). "Re-evaluation of metatartaric acid (E 353) as a food additive". EFSA Journal. 18 (3): e06031. doi:10.2903/j.efsa.2020.6031. PMC 7448071. PMID 32874249.
- ^ "Cold Stabilization". Australian Wine Research Institute.
- ^ "3.3.7 Treatment with Metatartaric Acid" (PDF). International Code of Oenological Practices.
- v
- t
- e
![]() | This wine-related article is a stub. You can help Wikipedia by expanding it. |
- v
- t
- e