Ascorbyl palmitate

Ascorbyl palmitate
IUPAC name

[(2S)-2-[(2R)-4,5-Dihydroxy-3-oxo-2-furyl]-2-hydroxy-ethyl] hexadecanoate
Other names

Ascorbyl palmitate
L-Ascorbic acid 6-hexadecanoate
6-O-Palmitoylascorbic acid
Identifiers
Abbreviations E304
CAS number 137-66-6 Y
PubChem 5282506
ChemSpider 16736579 Y
UNII QN83US2B0N Y
ChEMBL CHEMBL220190 Y
Jmol-3D images Image 1
Properties
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
Hazards
Flash point 178.1 °C
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
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], USA [2] and Australia and New Zealand.[3]

Ascorbyl palmitate taken orally is less effective, due to the substance's breaking down again into ascorbic acid (not necessarily Vitamin C) and palmitic acid (a saturated fatty acid) before being digested. [4] Ascorbyl palmitate is also marketed as "vitamin C ester".

See also

External links

References

  1. ^ UK Food Standards Agency: "Current EU approved additives and their E Numbers". http://www.food.gov.uk/safereating/chemsafe/additivesbranch/enumberlist. Retrieved 2011-10-27. 
  2. ^ US Food and Drug Administration: "Listing of Food Additives Status Part I". http://www.fda.gov/Food/FoodIngredientsPackaging/FoodAdditives/FoodAdditiveListings/ucm091048.htm. Retrieved 2011-10-27. 
  3. ^ Australia New Zealand Food Standards Code"Standard 1.2.4 - Labelling of ingredients". http://www.comlaw.gov.au/Details/F2011C00827. 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.