Ascorbyl palmitate

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Ascorbyl palmitate
Ascorbyl palmitate.png
Abbreviations E304
CAS number 137-66-6 YesY
PubChem 5282506
ChemSpider 16736579 YesY
Jmol-3D images Image 1
Molecular formula C22H38O7
Molar mass 414.533 g/mol
Appearance White to yellowish colored powder
Melting point 116–117 °C
Solubility in water Very slightly soluble in water; freely soluble in ethanol
Flash point 178.1 °C (352.6 °F; 451.2 K)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 YesY (verify) (what is: YesY/N?)
Infobox references

Ascorbyl palmitate is an ester formed from ascorbic acid and palmitic acid creating a fat-soluble form of vitamin C. In addition to its use as a source of vitamin C, it is also used as an antioxidant food additive (E number E304). It is approved for use as a food additive in the EU,[1] the U.S.,[2] Australia, and New Zealand.[3]

Ascorbyl palmitate taken orally is, in all probability, far less effective than the claims made by advertisers and marketers. This is due to the fact that ascorbyl palmitate is known to be broken down (through the digestive process) into ascorbic acid and palmitic acid (a saturated fatty acid) before being absorbed into the bloodstream.[4] Ascorbyl palmitate is also marketed as "vitamin C ester".

See also[edit]


  1. ^ UK Food Standards Agency: "Current EU approved additives and their E Numbers". Retrieved 2011-10-27. 
  2. ^ US Food and Drug Administration: "Listing of Food Additives Status Part I". Retrieved 2011-10-27. 
  3. ^ Australia New Zealand Food Standards Code"Standard 1.2.4 - Labelling of ingredients". Retrieved 2011-10-27. 
  4. ^ DeRitter E.; Cohen, N; Rubin, SH (1951). "Physiologic availability of dehydro-L-ascorbic acid and palmitoyl-L-ascorbic acid". Science 113 (2944): 628–631. doi:10.1126/science.113.2944.628. PMID 14845692. 

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