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.

Octyl gallate

Names
Preferred 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
CAS Number	1034-01-1 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:83631 Y
ChEMBL	ChEMBL277346 Y
ChemSpider	55194 N
ECHA InfoCard	100.012.863
EC Number	213-853-0
E number	E311 (antioxidants, ...)
PubChem CID	61253
UNII	079IIA2811 Y
CompTox Dashboard (EPA)	DTXSID4040713
InChI InChI=1S/C15H22O5/c1-2-3-4-5-6-7-8-20-15(19)11-9-12(16)14(18)13(17)10-11/h9-10,16-18H,2-8H2,1H3 N Key: NRPKURNSADTHLJ-UHFFFAOYSA-N N InChI=1/C15H22O5/c1-2-3-4-5-6-7-8-20-15(19)11-9-12(16)14(18)13(17)10-11/h9-10,16-18H,2-8H2,1H3 Key: NRPKURNSADTHLJ-UHFFFAOYAL
SMILES CCCCCCCCOC(=O)C1=CC(=C(C(=C1)O)O)
Properties
Chemical formula	C15H22O5
Molar mass	282.336 g·mol−1
Appearance	White solid
Melting point	98 to 101 °C (208 to 214 °F; 371 to 374 K)
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H317
Precautionary statements	P261, P264, P270, P272, P280, P301 P312, P302 P352, P321, P330, P333 P313, P363, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) 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).