Section 172.270 - Sulfated butyl oleateSulfate butyl oleate may be safely used in food, subject to the following prescribed conditions:
(a) The additive is prepared by sulfation, using concentrated sulfuric acid, of a mixture of butyl esters produced by transesterification of an edible vegetable oil using 1-butanol. Following sulfation, the reaction mixture is washed with water and neutralized with aqueous sodium or potassium hydroxide. Prior to sulfation, the butyl oleate reaction mixture meets the following specifications: (1) Not less than 90 percent butyl oleate.(2) Not more than 1.5 percent unsaponifiable matter.(b) The additive is used or intended for use at a level not to exceed 2 percent by weight in an aqueous emulsion in dehydrating grapes to produce raisins, whereby the residue of the additive on the raisins does not exceed 100 parts per million.57 FR 12711, Apr. 13, 1992