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ANNEX U.K.

a Details of the analytical methods are available at the following address of the Reference Laboratory: http://irmm.jrc.ec.europa.eu/EURLs/EURL_feed_additives/Pages/index.aspx
b Easy to ensile forage: > 3 % soluble carbohydrates in fresh material (e.g. whole plant maize, ryegrass, brome grass or sugar beet pulp). Commission Regulation (EC) No 429/2008 (OJ L 133, 22.5.2008, p. 1).
c As propionic acid.
Identification number of the additive	Name of the holder of authorisation	Additive	Composition, chemical formula, description, analytical method	Species or category of animal	Maximum age	Minimum content	Maximum content	Other provisions	End of period of authorisation
						mg/kg of complete feedingstuff with a moisture content of 12 %
Category of technological additives. Functional group: silage additives
1k280	—	Propionic acid	Additive composition Propionic acid ≥ 99,5 % Characterisation of the active substance Propionic acid ≥ 99,5 % C3H6O2 CAS No: 79-09-4 Non-volatile residue ≤ 0,01 % when dried at 140 °C to constant weight Aldehydes ≤ 0,1 % expressed as formaldehyde Produced by chemical synthesis Method of Analysis a Quantification of propionic acid as total propionic acid in feed additive, premixtures, feedingstuffs: ion exclusion High Performance Liquid Chromatography with refractive index (HPLC-RI)	Ruminants	—	—	—	1. The simultaneous use of other organic acids at the maximum permitted doses is contraindicated. 2. The additive shall be used in easy to ensile materialb. 3. Simultaneous use with other sources of the active substance shall not exceed the authorised maximum content. 4. For safety: breathing protection, eye protection, gloves and protective clothing shall be used during handling.	20 December 2023
				Pigs		—	30 000
				Poultry		—	10 000
1k281	—	Sodium propionate	Additive composition Sodium propionate ≥ 98,5 % Characterisation of the active substance Sodium propronate ≥ 98,5 % C3H5O2Na CAS No: 137-40-6 Loss on drying ≤ 4 % determined by drying for two hours at 105 °C Water insolubles ≤ 0,1 % Produced by chemical synthesis Method of Analysis a Quantification of sodium propionate in feed additive: (1) ion exclusion High Performance Liquid Chromatography with refractive index detection (HPLC-RI) – for the determination of total propionate; and (2) atomic absorption spectrometry, AAS (EN ISO 6869) – for the determination of total sodium. Quantification of sodium propionate as total propionic acid in premixtures, feedingstuffs: ion exclusion High Performance Liquid Chromatography with refractive index (HPLC-RI)	Ruminants	—	—	—	1. The simultaneous use of other organic acids at the maximum permitted doses is contraindicated. 2. The additive shall be used in easy to ensile materialsb. 3. Simultaneous use with other sources of the active substance shall not exceed the authorised maximum content. 4. For safety: breathing protection, eye protection, gloves and protective clothing shall be used during handling.	20 December 2023
				Pigs		—	30 000c
				Poultry		—	10 000c
1k284	—	Ammonium propionate	Additive composition Preparation of ammonium propionate ≥ 19,0 %, propionic acid ≤ 80,0 % and water ≤ 30 % Characterisation of the active substance Ammonium propionate: C3H9O2N CAS No: 17496-08-1 Produced by chemical synthesis Method of Analysis a Quantification of the ammonium propionate in feed additive: (1) ion exclusion High Performance Liquid Chromatography with refractive index detection (HPLC-RI) – for the determination of total propionate; and (2) titration with sulphuric acid and sodium hydroxide for the determination of ammonia. Quantification of ammonium propionate as total propionic acid in premixtures, feedingstuffs: ion exclusion High Performance Liquid Chromatography with refractive index (HPLC-RI)	Ruminants	—	—	—	1. The simultaneous use of other organic acids at the maximum permitted doses is contraindicated. 2. The additive shall be used in easy to ensile materialsb. 3. Simultaneous use with other sources of the active substance shall not exceed the authorised maximum content. 4. For safety: breathing protection, eye protection, gloves and protective clothing shall be used during handling.	20 December 2023
				Pigs		—	30 000c
				Poultry		—	10 000c