Ascorbyl palmitate

Structural formula
General
Surname	Ascorbyl palmitate
other names	Ascorbyl palmitate; E 304 (ambiguous); 6-palmitoyl- L -ascorbic acid; ASCORBYL PALMITATE ( INCI ) ;
Molecular formula	C 22 H 38 O 7
Brief description	white solid with a faint odor
External identifiers / databases
EC number	205-305-4
ECHA InfoCard	100.004.824
PubChem	54680660
Wikidata	Q424521
properties
Molar mass	414.53 g mol −1
Physical state	firmly
Melting point	111-115 ° C
boiling point	150–160 ° C (decomposition)
solubility	almost insoluble in water
safety instructions
GHS labeling of hazardous substances	no GHS pictograms
	no GHS pictograms
H and P phrases	H: no H-phrases
	P: no P-phrases
Toxicological data	> 5000 mg kg −1 ( LD 50 , rat , oral )
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

As palmitate or ascorbyl palmitate is referred to ester of ascorbic acid as alcohol and palmitic acid as the acid component. Ascorbyl palmitate is an antioxidant and emulsifier . It is considered to be harmless and is a food additive with the number E 304, which is also approved in infant formula and infant follow-on formula , whereby it also refers to ascorbyl stearate, E 304 (II).

Extraction and presentation

Ascorbyl palmitate is obtained by esterifying ascorbic acid with palmitic acid. In the small intestine, it is slowly broken down again into the starting materials.

use

In foods, ascorbyl palmitate is found in sausage products, mayonnaise and chicken broth , where it is also used as a color stabilizer, among other things.

In cosmetic products , ascorbyl palmitate can be used as an antioxidant called ASCORBYL PALMITATE .

Web links

E 304 ascorbic acid ester
E 304 I - ascorbyl palmitate
Entry on Ascorbyl palmitate in the Consumer Product Information Database

Individual evidence

↑ Entry on E 304: Fatty acid esters of ascorbic acid in the European database for food additives, accessed on June 27, 2020.
↑ ^a ^b Entry on ASCORBYL PALMITATE in the CosIng database of the EU Commission, accessed on December 18, 2019.
↑ ^a ^b ^c ^d ^e ^f ^g Data sheet L (+) - ascorbyl palmitate (PDF) from Merck , accessed on February 28, 2018.
↑ B. Muermann / P. Kuhnert: Handbook of Food Additives , ISBN 978-3-925673-89-4 .

[E-Nummer304-1] Entry on E 304: Fatty acid esters of ascorbic acid in the European database for food additives, accessed on June 27, 2020.

[CosIng-2] Entry on ASCORBYL PALMITATE in the CosIng database of the EU Commission, accessed on December 18, 2019.

[msds-3] ↑ ^a ^b ^c ^d ^e ^f ^g Data sheet L (+) - ascorbyl palmitate (PDF) from Merck , accessed on February 28, 2018.

[4] B. Muermann / P. Kuhnert: Handbook of Food Additives , ISBN 978-3-925673-89-4 .