Octyl gallate
Octyl gallate is the ester of 1-octanol and gallic acid. As a food additive, it is used under the E number E311 as an antioxidant and preservative.
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| Names | |
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| IUPAC name
Octyl 3,4,5-trihydroxybenzoate | |
| Other names
E311; Progallin O; n-Ocyl gallate; Stabilizer GA-8; Gallic acid octyl ester; 3,4,5-Trihydroxybenzoic acid octyl ester | |
| Identifiers | |
3D model (JSmol) |
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| ChEBI | |
| ChEMBL | |
| ChemSpider | |
| ECHA InfoCard | 100.012.594  |
| EC Number |
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| E number | E311 (antioxidants, ...) |
PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| C15H22O5 | |
| Molar mass | 282.336 g·mol−1 |
| Appearance | White solid[1] |
| Melting point | 98 to 101 °C (208 to 214 °F; 371 to 374 K)[1] |
| Hazards | |
| R-phrases (outdated) | R22-R43[1] |
| S-phrases (outdated) | S24-S37[1] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
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| Infobox references | |
Properties
Octyl gallate is a white powder with a characteristic odor. It is very slightly soluble in water and soluble in alcohol. Its solubility in lard is 1.1%. Octyl gallate darkens in the presence of iron.
Uses
This antioxidant is used in numerous pharmaceutical, cosmetic, and food products; such as soaps, shampoos, shaving soaps, skin lotions, deodorants, margarine, and peanut butter.
It is a synergistic antioxidant with butylated hydroxytoluene (BHT) and butylated hydroxyanisole (BHA).
References
- Octyl gallate at chemicalland21.com
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