Ascorbyl stearate 3687287 210743554 2008-05-07T05:28:16Z Panfily 6970830 {{chembox new | ImageFile = Ascorbyl stearate.png | ImageSize = 350px | IUPACName = [(''2S'')-2-[(''2R'')-4,5-Dihydroxy-3-oxo-2-furyl]-2-hydroxy-ethyl] octadecanoate | OtherNames = E304<br>L-Ascorbic acid, 6-octadecanoate<br>Ascorbyl monooctadecanoate | Section1 = {{Chembox Identifiers | Abbreviations = | CASNo = 10605-09-1 | EINECS = 234-231-5 | PubChem = 10343784 | SMILES = OC([C@]([C@@H](O)COC(CCCCCCCCCCCCCCCCC)=O)([H])O1)=C(O)C1=O | InChI = | RTECS = | MeSHName = | ChEBI = | KEGG = | ATCCode_prefix = | ATCCode_suffix = | ATC_Supplemental =}} | Section2 = {{Chembox Properties | Formula = C<sub>24</sub>H<sub>42</sub>O<sub>7</sub> | MolarMass = 442.586 g/mol | Appearance = | Density = | MeltingPt = | Melting_notes = | BoilingPt = | Boiling_notes = | Solubility = | SolubleOther = | Solvent = | pKa = | pKb = }} | Section7 = {{Chembox Hazards | EUClass = | EUIndex = | MainHazards = | NFPA-H = | NFPA-F = | NFPA-R = | NFPA-O = | RPhrases = | SPhrases = | RSPhrases = | FlashPt = | Autoignition = | ExploLimits = | PEL = }} }} '''Ascorbyl stearate''' (C<sub>24</sub>H<sub>42</sub>O<sub>7</sub>) is an [[ester]] formed from [[ascorbic acid]] and [[stearic acid]]. In addition to its use as a source of [[vitamin C]], it is used as an [[antioxidant]] [[food additive]] in [[margarine]] ([[E number]] E305). The [[United States Department of Agriculture|USDA]] limits its use to 0.02% individually or in conjunction with other antioxidants. ==See also== *[[Ascorbyl palmitate]] ==References== *{{cite book | last = Burdock | first = George A | title = Encyclopedia of Food & Color Additives | pages = 213 | year = 1996 | publisher = CRC Press | id = ISBN 0-8493-9412-0}} *{{cite book | last = Lewis | first = Richard J | title = Food Additives Handbook | pages = 70 | year = 1989 | publisher = Springer | id = ISBN 0-442-20508-2}} ==External links== [[Category:Stearates]] [[Category:Carboxylate esters]] [[Category:Food additives]] {{ester-stub}} [[hu:Aszkorbil-sztearát]]