Gallic acid octyl ester

Synonyms Gallic acid octyl ester n-Octyl ester of 3,4,5-trihydroxybenzoic acid n-Octyl gallate Octyl 3,4,5-trihydroxybenzoate 3,4,5-Trihydroxybenzoic acid octyl ester... 

Propyl (PG, E 310), octyl (OG, E 311), and dodecyl (or lauryl) (DG, E 312) esters of gallic acid, usually named alkyl gallates, form a part of the synthetic phenolic antioxidants, mainly used as food additives, with PG being the most frequently used alkyl gallate. The molecular structure of these compounds is composed of a hydrophilic head (phenolic ring) and a hydrophobic alkyl chain (Figure 14.1). PG is slightly soluble in water but OG and DG are insoluble in water. The three compounds are soluble in ethanol, ethyl ether, and oils. 

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