# The Feeding Stuffs Regulations (Northern Ireland) 1992, Chapter B


1 EEC No.
2 Name or description
3 Chemical formula
4 Kind of animal
5 Maximum content (mg/kg in complete feeding stuff)
E222
E223
Sodium hydrogensulphite (sodium bisulphite)
di Sodium disulphite (sodium metabisulphite)
Not permitted in unprocessed meat and fish
NaHSO3
Na2S2O5
Dogs and Cats
500 alone or together expressed as SO2
E250
Sodium nitrite
NaNO2
Dogs and Cats
100 (canned feeding stuffs only)
E214
E215
E216
E217
E218
E219
Ethyl 4-hydroxybenzoate
Sodium ethyl 4-hydroxybenzoate
Propyl 4-hydroxybenzoate
Sodium propyl 4-hydroxybenzoate
Methyl 4-hydroxybenzoate
Sodium methyl 4-hydroxybenzoate
C9H10O3
C9H9O3Na
C10H12O3
C10H11O3Na
C8H8O3
C8H7O3Na
Pet Animals
No limit
E490
Propane-1,2-diol
C3H8O2
Dogs
53000
E240
Formaldehyde
CH2O
All species of animals
Pigs up to the age of six months
No limit (for silage only)
600 (in skimmed milk only)

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Source: https://www.legislation.gov.uk/nisr/1992/270/schedule/4/part/VIII/chapter/B (the official version)
Page: https://openlegislation.uk/feeding-stuffs-regulations-northern-ireland-1992/schedule-4/part-VIII/chapter-B
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.