# The Feeding Stuffs Regulations 1991, Part II: Permitted Colourants Column 1 Column 2 Column 3 Column 4 Column 5 Column 6 EEC No. Name or Description Chemical Formula Kind of Animal Maximum Content (mg/kg in complete feeding stuffs) Conditions E160c Capsanthin C40H56O3 Poultry 80: alone or together None E160e Beta-apo-8"-carotenal C30H40O Poultry 80: alone or together None E160f Ethyl ester of beta-apo-8"-carotenoic acid C32H44O2 Poultry 80: alone or together None E161b Lutein C40H56O2 Poultry 80: alone or together None E161c Cryptoxanthin C40H56O Poultry 80: alone or together None E161g Canthaxanthin C440H52O2 Poultry 80: alone or together None E161h Zeaxanthin C40H56O2 Poultry 80: alone or together None E161i Citranaxanthin C33H44O Laying Hens 80: alone or together None E161g Canthaxanthin C40H52O2 Dogs and Cats No limit None Trout and Salmon 80 Use permitted from the age of 6 months onwards E161j Astaxanthin C40H52O4 Trout and Salmon 100: alone or together with canthaxanthin Use permitted from the age of 6 months onwards E131 Patent Blue V (Calcium salt of the disulphonic acid of m-hydroxy-tetra-ethyldiamino triphenyl-carbinol anhydride) Dogs and Cats All other species of animals No limit No limit None Permitted only in products processed from waste products of foodstuffs, denatured cereals or manioc flour, or other base substances denatured by means of these agents or coloured during preparation to ensure identification during manufacture E142 Acid Brilliant Green BS (Sodium salt of 4,4"-bis (dimethylamino) diphenyl-methylene-2.naphthol-3,6-disulphonic acid) All species of animals except dogs and cats Dogs and Cats No limit No limit Permitted only in products processed from waste products of foodstuffs, denatured cereals or manioc flour, or other base substances denatured by means of these agents or coloured during preparation to ensure identification during manufacture None All other colourants at present permitted for use in human food by European Community Directives as implemented by regulations made or having effect as if made under the Food Act 1984 or the Food and Drugs (Scotland) Act, 1956 Dogs and Cats All other species of animals No limit No limit None Permitted only in products processed from waste products of foodstuffs, or other base substances, with the exception of cereals and manioc flour, denatured by means of those agents or coloured during technical preparation to ensure the necessary identification during manufacture --- Source: https://www.legislation.gov.uk/uksi/1991/2840/schedule/4/part/II (the official version) Page: https://openlegislation.uk/feeding-stuffs-regulations-1991/schedule-4/part-II Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.