3c310 | — | Hydroxy analogue of methionine and its calcium salt | Additive composition:Preparation of hydroxy analogue of methionine and calcium salt of hydroxy analogue of methionine, having a minimum content of hydroxy analogue of methionine of 88 % and a minimum content of calcium of 8 %.Characterisation of the active substances:Hydroxy analogue of methionine:- IUPAC name: 2-hydroxy-4-(methylthio)butanoic acidCAS number 583-91-5Chemical formula: C5H10O3Scalcium salt of hydroxy analogue of methionine:
- IUPAC name 2-hydroxy-4-(methylthio)butanoic acid, calcium saltCAS number 4857-44-7Chemical formula: (C5H9O3S)2Ca
Analytical method:For the determination of hydroxy analogue of methionine in the additive:- Titrimetry, potentiometric titration after oxidation reduction reaction.
For the determination of hydroxy analogue of methionine in premixtures, compound feed and feed materials:- High-Performance Liquid Chromatography and photometric detection (HPLC-UV).
For the determination of total calcium in the additive:- Atomic Absorption Spectrometry, AAS (EN ISO 6869); or
- Inductively Coupled Plasma – Atomic Emission Spectrometry, ICP-AES (EN 15510); or
- Inductively Coupled Plasma – Atomic Emission Spectrometry after pressure digestion, ICP-AES (EN 15621).
| All animal species | — | — | — | 1.For users of the additive and premixtures, feed business operators shall establish operational procedures and organisational measures to address potential risks resulting from its use, in particular considering that it is corrosive to skin and eyes. Where those risks cannot be eliminated or reduced to a minimum by such procedures and measures, the additive and premixtures shall be used with personal protective equipment, including safety glasses and gloves.2.In the directions for use of the additive and premixture, the storage conditions and the stability to heat treatment shall be indicated.3.Declaration to be made on the label of the additive and premixture: content of hydroxy analogue of methionine.4.The labelling of feed materials and compound feed, into which the additive has been incorporated, shall contain in the listing of additives information as regards:- Name of the additive,
- Amount of the hydroxy analogue of methionine added.
| 24 January 2029 |