http://www.legislation.gov.uk/id/nisr/1995/451/schedule/4

SCHEDULE 4PERMITTED ADDITIVES AND PROVISIONS RELATING TO THEIR USE

PART IIPERMITTED COLOURANTS

Column 1	Column 2	Column 3	Column 4	Column 5	Column 6
EECNo.	Name or description	Chemical formula, description	Kind of animal	Maximum content (mg/kg in complete feeding stuffs)	Conditions
E160c E160e E160f E161b E16lc	1 Carotenoids and xanthophylls: Capsanthin Beta-apo-8'-carotenal Ethyl ester of beta-apo 8'-carotenoic acid Lutein Cryptoxanthin	C₄₀H₅₆O₃ C₃₀H₄₀O C₃₂H₄₄O₂ C₄₀H₅₆O₂ C₄₀H₅₅	} Poultry	} 80 (alone or with the other carotenoids and xanthophylls)	None
E161g	Canthaxanthin	C₄₀H₅₂)₂	a Poultry b Salmon, trout c Dogs, cats and ornamental fish	80 No limit	Use permitted from the age of 6 months onwards. The mixture of canthaxanthin with astaxanthin is allowed provided that the total concentration of the mixture does not exceed 100 mg/kg in the complete feeding stuff. None
E161h E161i	Zeaxanthin Citranaxanthin	C₄₀H₅₆O₂ C₃₃H₄₄O	Poultry Laying hens	} 80 (alone or with other carotenoids and xanthophylls)	None
E161j	Astaxanthin	C₄₀H₅₂O₄	a Salmon, trout b Ornamental fish	100 No limit	Use only permitted from the age of 6 months onwards. The mixture of astaxanthin with canthaxanthin is allowed provided that the total concentration of the mixture does not exceed 100 mg/kg in the complete feeding stuff. None
El02 El10 El24 El27	2 Other colourants: Tartrazine Sunset yellow FCF Ponceau 4R Erythrosine	C₁₆H₉N₄Na₃O₉S₂ C₁₆H₁₀N₂Na₂O₇S₂ C₂₀H₁₁N₂Na₃O₁₀S₃ C₂₀H₆I₄Na₂O₅H₂O	} Ornamental fish	No limit	None
El31	Patent Blue V	Calcium salt of the disulphonic acid of m-hydroxytetraethy diamino triphenylcarbinol anhydridc	a All species or categories of animals with the exception of dogs and cats b Dogs and cats	No limit No limit	Permitted in animal feeding stuffs only in products processed from: i waste products of foodstuffs, ii denatured cereals or manioc flour, or iii other base substances denatured by means of these agents or coloured during technical preparation to ensure the necessary identification during manufacture.
El32	Indigotine	C₁₆H₈N₂Na₂O₈S₂	Ornamental fish	No limit	None
E141	Chlorophyll copper complex	—	Ornamental fish	No limit	None
E142	Acid Brilliant Green BS, (Lissamine Green)	Sodium salt of 4,4'-bis (dimethylamino) diphenylmethylene -2-naphtol-3,6-disulphonic acid	a All species or categories of animals with the exception of dogs, cats and ornamental fish b Dogs, cats and ornamental fish	No limit No limit	Permitted in animal feeding stuffs only in products processed from: i waste products of foodstuffs, ii denatured cereals or manioc flour, or iii other base substances denatured by means of these agents or coloured during technical preparation to ensure the necessary identification during manufacture. None
E153 E160B E172	Carbon black Bixin Iron oxide, red	C C₂₅H₃₀O₄ Fe₂O₃	} Ornamenal fish	No limit	None
3 All colourants (other than Patent Blue V and Acid Brilliant Green BS) 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 Safety (Northern Ireland) Order 199124	—	a All species or categories of animals with the exception of dogs and cats b Dogs and cats	No limit No limit	Permitted in animal feeding stuffs only in products processed from: i waste products of, foodstuffs, or ii other base substances, with the exception of cereals and manioc flour, denatured by means of these agents or coloured during technical preparation to ensure the necessary identification during manufacture.	None