Food Additives Labelling Regulations 1992 (S.I. No. 1978 of 1992).

"Food additive" here means such food as comprises material (with or without nutritive value): (a) which is within one or more than one category listed in Part I, as supplemented by Part II, of Schedule 1 below; (b) which is neither normally consumed as a food in itself nor normally used as a characteristic ingredient of food; (c) which is not within a category (or more than one category) listed in Schedule 2 below, and; (d) the intentional addition of which to other food for a technological purpose in the manufacture, processing, preparation, treatment, packaging, transport or storage of that other food results, or may be reasonably expected to result, in that material or its by-products becoming directly or indirectly a component of that other food.
No person shall make a business sale of any food additives to any person for use as ingredients in the preparation of food unless the food additives are in a container and the requirements for sales of food additives are observed in relation to that sale. No person shall make a consumer sale of food additives to any person unless the food additives are in a container and the requirements for sales of food additives are observed in relation to that sale. Schedule 3 shall have effect for the purposes of establishing when the requirements for any sale to which this regulation applies are observed in relation to that sale.