Sunflower lecithin is a food additive. Below are all the products whose label lists it, ordered just like the other lists.
Sunflower lecithin (E322) – emulsifier. Lecithins, usually from soya or sunflower, keep fat and water mixed in chocolate, margarine and baked goods. Soya lecithin is declared as soya (an allergen).
Source: EU register of food additives (Reg. (EC) No 1333/2008) and EFSA.