2b920 | — | L-cysteine hydrochloride monohydrate | Additive compositionL-cysteine hydrochloride monohydrate.Characterisation of the active substanceL-cysteine hydrochloride monohydrateC3H7NO2S·HClH2OCAS No: 7048-04-6L-cysteine hydrochloride monohydrate solid form, produced by hydrolysis of keratin from avian feathers.Purity: min. 98,5 % assay.Method of analysisFor the quantification of L-cysteine hydrochloride monohydrate in feed additive: titrimetry, European Pharmacopoeia (Ph. Eur. 6,0, method 01/2008:0895).For the quantification of Cyst(e)ine (including L-cysteine hydrochloride monohydrate) in premixtures and feedingstuffs: ion exchange chromatography method with post-column derivatisation and photometric detection: Commission Regulation (EC) No 152/2009 (Annex III, F). | Cats and dogs | — | — | — | 1.Indicate in the directions for use of the additive and premixture:- the storage conditions;
- supplementation with L-cysteine hydrochloride monohydrate shall depend on the requirements of cats and dogs for sulphur-containing amino acids and the level of other sulphur-containing amino acids in the ration.
2.For safety: breathing protection, safety glasses and gloves shall be worn during handling. | 31 December 2025 |