E351 (Potassium malate) is a chemical compound, potassium salt of malic acid.

It appears in the form of a white powder.

What it is used for and where

Food

Ingrediente inserito nella lista degli additivi alimentari europei come E351, agente tampone.

Other uses

Potassium malate is used to increase the growth and elongation of cotton fibres in the continuous process using two membrane units in the wine industry.

• Molecular Formula   C₄H₅KO₅
• Molecular Weight      172.18
• CAS  4675-64-3
• UNII    51LY1256Y1
• EC Number   225-126-5
• IUPAC  potassium;2,4-dihydroxy-4-oxobutanoate
• InChl=1S/C4H6O5.K/c5-2(4(8)9)1-3(6)7;/h2,5H,1H2,(H,6,7)(H,8,9);/q;+1/p-1
• InChl Key      JZRVQGVITBCZDB-UHFFFAOYSA-M
• SMILES  C(C(C(=O)[O-])O)C(=O)O.[K+]  

References:

• Malic acid, monopotassium salt
• monopotassium malate