Ascorbyl palmitate
| Ascorbyl palmitate | |
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[(2S)-2-[(2R)-4,5-Dihydroxy-3-oxo-2-furyl]-2-hydroxy-ethyl] hexadecanoate |
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Other names
Ascorbyl palmitate |
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| Identifiers | |
| Abbreviations | E304 |
| CAS number | 137-66-6  |
| PubChem | 5282506 |
| ChemSpider | 16736579 |
| UNII | QN83US2B0N |
| ChEMBL | CHEMBL220190 |
| Jmol-3D images | Image 1 |
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| 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 |
 (verify) (what is:  / ?)Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| 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".
[edit] See also
[edit] External links
- Information from the Linus Pauling Institute
- Record in the Household Products Database of NLM
[edit] References
- ^ 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.
- ^ 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.
- ^ Australia New Zealand Food Standards Code"Standard 1.2.4 - Labelling of ingredients". http://www.comlaw.gov.au/Details/F2011C00827. Retrieved 2011-10-27.
- ^ 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.
