21 C.F.R. § 582.4101
Diacetyl tartaric acid esters of mono- and diglycerides of edible fats or oils, or edible fat-forming fatty acids
(a) Product. Diacetyl tartaric acid esters of mono- and diglycerides of edible fats or oils, or edible fat-forming fatty acids.
(b) Conditions of use. This substance is generally recognized as safe when used in accordance with good manufacturing or feeding practice.