
Article 1 
The substance specified in the Annex, belonging to the additive category ‘sensory additives’ and to the functional group ‘flavouring compounds’, is authorised as a feed additive in animal nutrition subject to the conditions laid down in that Annex.
Article 2 

1. The substance specified in the Annex and premixtures containing this substance, which are produced and labelled before 30 June 2016 in accordance with the rules applicable before 31 December 2015 may continue to be placed on the market and used until the existing stocks are exhausted.
2. Compound feed and feed materials containing the substance specified in the Annex which are produced and labelled before 31 December 2017 in accordance with the rules applicable before 31 December 2015 may continue to be placed on the market and used until the existing stocks are exhausted.
Article 3 
This Regulation shall enter into force on the twentieth day following that of its publication in the Official Journal of the European Union.
This Regulation shall be binding in its entirety and directly applicable in all Member States.Done at Brussels, 10 December 2015.
For the Commission
The President
Jean-Claude JUNCKER
ANNEX

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 of active substance/kg of complete feedingstuff with a moisture content of 12 %.
Category: Sensory additives. Functional group: Flavouring compounds.
2b920 — L-cysteine hydrochloride monohydrate 
L-cysteine hydrochloride monohydrate.

L-cysteine hydrochloride monohydrate

C3H7NO2S·HClH2O

CAS No: 7048-04-6

L-cysteine hydrochloride monohydrate solid form, produced by hydrolysis of keratin from avian feathers.

Purity: min. 98,5 % assay.

For 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. 

— 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

