COMMISSION IMPLEMENTING REGUL ATION (EU) 2017/56 
of 14 December 2016 
concer ning the author isation of lactic acid, 4-oxovaler ic acid, succinic acid, fumar ic acid, ethy l 
acetoacetate, ethy l lactat e, butyl lact ate, ethy l 4-oxovalerate, dieth yl succinate, diethyl malonate, 
butyl-O-butyr yllact ate, hex-3-eny l lact ate, hexyl lactate, butyro-1,4-lactone, decano-1,5-lactone, 
undecano-1,5-lactone, pentano-1,4-lactone, nonano-1,5-lacton e, octano- 1,5-lact one, hept ano-1,4- 
lactone and hexan o-1,4-lact one as feed additiv es for all animal species 
(Text with EEA relevance) 
THE EUR OPEAN COMMISSION, 
Having regar d to the Treaty on the Functioning of the European Union, 
Having regar d to Regulation (EC) No 1831/2003 of the European Parliament and of the Council of 22 September 2003 
on additives for use in animal nutr ition (1), and in particular Article 9(2) thereof, 
Whereas: 
(1)  Regulation (EC) No 1831/2003 provides for the author isation of additives for use in animal nutr ition and for the 
grounds and procedures for granting such author isation. Article 10 of that Regulation provides for the re- 
evaluation of additives author ised pursuant to Council Directive 70/524/EEC (2). 
(2)  Lactic acid, 4-oxovaler ic acid, succinic acid, fumar ic acid, ethyl acet oacetate, ethyl lactate , butyl lactat e, ethyl 
4-oxovalerate, diethyl succinate, diethyl malonate, butyl-O-butyr yllactat e, hex-3-enyl lactate, hexyl lactate, butyro- 
1,4-lact one, decano-1,5-lactone, undecano-1,5-lactone , pentano-1,4-lacton e, nonano-1,5-lactone, octano-1,5- 
lacto ne, heptano-1,4 -lactone and hexano-1,4-lactone (‘the substances concer ned’) were author ised without a time 
limit in accordance with Directive 70/524/EEC as feed additives for all animal species. Those products were 
subsequently entered in the Regist er of feed additives as existing products, in accordance with Article 10(1) of 
Regulation (EC) No 1831/2003. 
(3)  In accordance with Article 10(2) of Regulation (EC) No 1831/2003 in conjunction with Article 7 thereof, an 
application was submitted for the re-evaluation of the substances concer ned as feed additives for all animal 
species. The applicant requested those additives to be classified in the additive categor y ‘sensor y additives ’. That 
application was accompan ied by the particulars and documents required under Article 7(3) of Regulation (EC) 
No 1831/2003. 
(4)  The European Food Safety Auth ority (‘the Author ity’) concluded in its opinion of 17 October 2012 (3) that, 
under the proposed conditions of use in feed the substances concer ned do not have adverse effects on animal 
health, human health or the environment. The Auth ority further concluded that the function of the substances 
concer ned in feed is similar to that on food. The Author ity has already concluded that for food the substances 
concer ned are efficacious, as it increases the food smell or palatability . Theref ore, that conclusion can be 
extrapolat ed for feed. The Author ity is not in a position to evaluate the use of the substances concer ned in wate r 
for drinking. However , those substances can be used within compo und feeds whic h are subsequently 
administ ered via wate r. 
(5)  Restr ictions and conditions should be provided for to allow better control. Since safety reasons do not require the 
setting of a maximum cont ent and, taking into account the re-evaluation performed by the Author ity, 
recommended cont ents should be indicated on the label of the additive. Where such cont ents are excee ded, 
certain information should be indicated on the label of premixtures, compound feeds and feed mate rials. 
(6)  The Auth ority concluded that the substances concer ned are considered as poten tially hazardous to the respirato ry 
tract skin, eyes and skin sensitisers. Consequently , appropr iate prot ective measures should be take n. The 
Author ity does not consider that there is a need for specifi c requirements of post-market monitori ng. It also 
verified the repor t on the method of analysis of the feed additives in feed submitte d by the Reference Laborat ory 
set up by Regulation (EC) No 1831/2003. 17.1.2017 L 13/129 Official Jour nal of the European Union EN     
(1)OJ L 268, 18.10.2003, p. 29. 
(2)Council Directive 70/524/EEC of 23 November 1970 concer ning additives in feed ingstuffs (OJ L 270, 14.12.1970, p. 1). 
(3)EFSA Journal 2012;10(10):2928. (7)  The assessment of the substances concer ned shows that the conditions for author isation, as provided for in 
Article 5 of Regulation (EC) No 1831/2003, are satisfied. 
(8) Since safety reasons do not require the immediate application of the modifi cations to the conditions of author is­
ation for the substances concer ned, it is appropr iate to allow a transitional period for interest ed parties to 
prepare themselves to meet the new requirements resulting from the author isation. 
(9)  The measures provided for in this Regulation are in accordance with the opinion of the Standing Committ ee on 
Plants, Animals, Food and Feed, 
HAS ADOPTED THIS REGUL ATION: 
Article 1 
Author isation 
The substances specifi ed in the Annex, belonging to the additive catego ry ‘sensor y additives ’ and to the functional group 
‘flavouri ng compounds’, are author ised as feed additives in animal nutr ition subject to the conditions laid down in that 
Annex. 
Article 2 
Transitional measures 
1. The substances specifi ed in the Annex and premixtures containing those substances, whic h are produced and 
labelled before 6 August 2017 in accordance with the rules applicable before 6 Febr uary 2017 may continue to be 
placed on the mark et and used until the existing stoc ks are exhausted. 
2. Com pound feed and feed mater ials containing the substances as specif ied in the Annex which are produced and 
labelled before 6 Febr uary 2018 in accordance with the rules applicable before 6 Febr uary 2017 may continue to be 
placed on the mark et and used until the existing stoc ks are exhausted if they are intende d for food-producing animals. 
3. Com pound feed and feed mater ials containing the substances as specif ied in the Annex which are produced and 
labelled before 6 Febr uary 2019 in accordance with the rules applicable before 6 Febr uary 2017 may continue to be 
placed on the mark et and used until the existing stocks are exhaust ed if they are intende d for non-f ood-producing 
animals. 
Article 3 
Entr y into force 
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 State s. 
Done at Brussels, 14 December 2016. 
For the Commission 
The Presid ent 
Jean-Claude JUNCKER  17.1.2017 L 13/130 Official Jour nal of the European Union EN     ANNEX 
Identifica ­
tion 
number of 
the additive Name of the 
holder of 
author isation Additive Composition, chem ical 
formula, descr iption, analyti ­
cal method Species or 
categor y of 
animal Maximum age Minimum 
content Maximum 
conten t 
Other provisions End of period 
of author is­
ation mg of active substance/kg of 
complet e feed ingstuff with 
a moisture content of 12 % 
(1) (2) (3) (4) (5) (6) (7) (8) (9) 
Categor y: Sensor y additiv es. Functional group: Flavour ing compounds 
2b08004 — Lactic acid Additiv e composition 
Lactic acid 
Char acter isation of the activ e 
substance 
Lactic acid 
Produced by chemical 
synthesis 
Purity: min. 95 % 
Chemical formula: 
C3H6O3 
CAS number 598-82-3 
and 
50-21-5 for DL-lactic acid 
79-33-4 for L-lactic acid 
FLAVIS No 08.004 
Method of analy sis(1) 
For the determination of 
lactic acid in the feed ad­
ditive and in feed flavour­
ing premixtures. 
Gas chromat ography 
mass spectrometr y with 
retention time locking 
GC-MS-RT L. All animal 
species — — —  1. The additive shall be incor porated 
into the feed in the form of a pre­
mixture. 
2.In the directions for use of the ad­
ditive and premixtures, the storage 
and stability conditions shall be 
indicated. 
3.The recommended maximum con­
tent of the active substance shall 
be: 5 mg/kg of compl ete feeding ­
stuff with a moisture content of 
12 %.  
4. On the label of the additive the 
following shall be indicated : 
‘Recommended maximum conte nt 
of the active substance of com ­
plete feedingstuff with a moisture 
content of 12 %: 5 mg/kg’. 
5.The functional group, the identif i­
cation number , the name and the 
added amount of the active sub­
stance shall be indicated on the la­
belling of the premixtures, feed 
mater ials and compo und feeding ­
stuffs, if the following content of 
the active substance in compl ete 
feedingstuff with a moisture con­
tent of 12 % is excee ded: 5 mg/kg.  6 Febr uary 
2027 17.1.2017 L 13/131 Official Jour nal of the European Union EN     (1) (2) (3) (4) (5) (6) (7) (8) (9) 
6.For users of the additive and pre­
mixtures, feed business operat ors 
shall establish operational proce ­
dures and organisational measures 
to address potential risks by der­
mal contact or eyes contact. 
Where those risks cannot be elim ­
inated or reduced to a minimum 
by such procedures and measures, 
the additive and premixtures shall 
be used with personal prot ective 
equipment, including safety glasses 
and gloves. 
2b08023 — 4-Ox ovaler ic 
acid Additiv e composition 
4-Ox ovaler ic acid 
Char acter isation of the activ e 
substance 
4-Ox ovaler ic acid 
Produced by chemical 
synthesis 
Purity: min. 97 % 
Chemical formula: 
C5H8O3 
CAS number 123-76-2 
FLAVIS No 08.023 
Method of analy sis(1) 
For the determination of 
4-oxovaler ic acid in the 
feed additive and in feed 
flavouring premixtures. 
Gas chromat ography 
mass spectrometr y with 
retention time locking 
GC-MS-RT L. All animal 
species — — —  1. The additive shall be incor porated 
into the feed in the form of a pre­
mixture. 
2.In the directions for use of the ad­
ditive and premixtures, the storage 
and stability conditions shall be 
indicated. 
3.The recommended maximum con­
tent of the active substance shall 
be: 5 mg/kg of compl ete feeding ­
stuff with a moisture content of 
12 %.  
4. On the label of the additive the 
following shall be indicated : 
‘Recommended maximum conte nt 
of the active substance of com ­
plete feedingstuff with a moisture 
content of 12 %: 5 mg/kg’. 
5.The functional group, the identif i­
cation number , the name and the 
added amount of the active sub­
stance shall be indicated on the la­
belling of the premixtures, feed 
mater ials and compo und feeding ­
stuffs, if the following content of 
the active substance in compl ete 
feedingstuff with a moisture con­
tent of 12 % is excee ded: 5 mg/kg.  6 Febr uary 
2027 17.1.2017 L 13/132 Official Jour nal of the European Union EN     (1) (2) (3) (4) (5) (6) (7) (8) (9) 
6.For users of the additive and pre­
mixtures, feed business operat ors 
shall establish operational proce ­
dures and organisational measures 
to address potential risks by der­
mal contact or eyes contact. 
Where those risks cannot be elim ­
inated or reduced to a minimum 
by such procedures and measures, 
the additive and premixtures shall 
be used with personal prot ective 
equipment, including safety glasses 
and gloves. 
2b08024 — Succinic 
acid Additiv e composition 
Succinic acid 
Char acter isation of the activ e 
substance 
Succinic acid 
Produced by chemical 
synthesis 
Purity: min. 99 % 
Chemical formula: 
C4H6O4 
CAS number 110-15-6 
FLAVIS No 08.024 
Method of analy sis(1) 
For the determination of 
succinic acid in the feed 
additive and in feed fla­
vouring premixtures. 
Gas chromat ography 
mass spectrometr y with 
retention time locking 
GC-MS-RT L. All animal 
species — — —  1. The additive shall be incor porated 
into the feed in the form of a pre­
mixture. 
2.In the directions for use of the ad­
ditive and premixtures, the storage 
and stability conditions shall be 
indicated. 
3.The recommended maximum con­
tent of the active substance shall 
be: 5 mg/kg of compl ete feeding ­
stuff with a moisture content of 
12 %.  
4. On the label of the additive the 
following shall be indicated : 
‘Recommended maximum conte nt 
of the active substance of com ­
plete feedingstuff with a moisture 
content of 12 %: 5 mg/kg’. 
5.The functional group, the identif i­
cation number , the name and the 
added amount of the active sub­
stance shall be indicated on the la­
belling of the premixtures, feed 
mater ials and compo und feeding ­
stuffs, if the following content of 
the active substance in compl ete 
feedingstuff with a moisture con­
tent of 12 % is excee ded: 5 mg/kg.  6 Febr uary 
2027 17.1.2017 L 13/133 Official Jour nal of the European Union EN     (1) (2) (3) (4) (5) (6) (7) (8) (9) 
6.For users of the additive and pre­
mixtures, feed business operat ors 
shall establish operational proce ­
dures and organisational measures 
to address potential risks by der­
mal contact or eyes contact. 
Where those risks cannot be elim ­
inated or reduced to a minimum 
by such procedures and measures, 
the additive and premixtures shall 
be used with personal prot ective 
equipment, including safety glasses 
and gloves. 
2b08025 — Fumar ic 
acid Additiv e composition 
Fumar ic acid 
Char acter isation of the activ e 
substance 
Fumar ic acid 
Produced by chemical 
synthesis 
Purity: min. 99,5 % 
Chemical formula: 
C4H4O4 
CAS number 110-17-8 
FLAVIS No 08.025 
Method of analy sis(1) 
For the determination of 
fumar ic acid in the feed 
additive and in feed fla­
vouring premixtures. 
Gas chromat ography 
mass spectrometr y with 
retention time locking 
GC-MS-RT L. All animal 
species — — —  1. The additive shall be incor porated 
into the feed in the form of a pre­
mixture. 
2.In the directions for use of the ad­
ditive and premixtures, the storage 
and stability conditions shall be 
indicated. 
3.The recommended maximum con­
tent of the active substance shall 
be: 5 mg/kg of compl ete feeding ­
stuff with a moisture content of 
12 %.  
4. On the label of the additive the 
following shall be indicated : 
‘Recommended maximum conte nt 
of the active substance of com ­
plete feedingstuff with a moisture 
content of 12 %: 5 mg/kg’. 
5.The functional group, the identif i­
cation number , the name and the 
added amount of the active sub­
stance shall be indicated on the la­
belling of the premixtures, feed 
mater ials and compo und feeding ­
stuffs, if the following content of 
the active substance in compl ete 
feedingstuff with a moisture con­
tent of 12 % is excee ded: 5 mg/kg.  6 Febr uary 
2027 17.1.2017 L 13/134 Official Jour nal of the European Union EN     (1) (2) (3) (4) (5) (6) (7) (8) (9) 
6.For users of the additive and pre­
mixtures, feed business operat ors 
shall establish operational proce ­
dures and organisational measures 
to address potential risks by der­
mal contact or eyes contact. 
Where those risks cannot be elim ­
inated or reduced to a minimum 
by such procedures and measures, 
the additive and premixtures shall 
be used with personal prot ective 
equipment, including safety glasses 
and gloves. 
2b09402 — Ethyl acetoa ­
cetate Additiv e composition 
Ethyl acetoaceta te 
Char acter isation of the activ e 
substance 
Ethyl acetoaceta te 
Produced by chemical 
synthesis 
Purity: min. 97,5 % 
Chemical formula: 
C6H10O3 
CAS number 141-97-9 
FLAVIS No 09.402 
Method of analy sis(1) 
For the determination of 
ethyl acet oacetate in the 
feed additive and in feed 
flavouring premixtures. 
Gas chromat ography 
mass spectrometr y with 
retention time locking 
GC-MS-RT L. All animal 
species — — —  1. The additive shall be incor porated 
into the feed in the form of a pre­
mixture. 
2.In the directions for use of the ad­
ditive and premixtures, the storage 
and stability conditions shall be 
indicated. 
3.The recommended maximum con­
tent of the active substance shall 
be: 5 mg/kg of compl ete feeding ­
stuff with a moisture content of 
12 %.  
4. On the label of the additive the 
following shall be indicated : 
‘Recommended maximum conte nt 
of the active substance of com ­
plete feedingstuff with a moisture 
content of 12 %: 5 mg/kg’. 
5.The functional group, the identif i­
cation number , the name and the 
added amount of the active sub­
stance shall be indicated on the la­
belling of the premixtures, feed 
mater ials and compo und feeding ­
stuffs, if the following content of 
the active substance in compl ete 
feedingstuff with a moisture con­
tent of 12 % is excee ded: 5 mg/kg.  6 Febr uary 
2027 17.1.2017 L 13/135 Official Jour nal of the European Union EN     (1) (2) (3) (4) (5) (6) (7) (8) (9) 
6.For users of the additive and pre­
mixtures, feed business operat ors 
shall establish operational proce ­
dures and organisational measures 
to address potential risks by der­
mal contact or eyes contact. 
Where those risks cannot be elim ­
inated or reduced to a minimum 
by such procedures and measures, 
the additive and premixtures shall 
be used with personal prot ective 
equipment, including safety glasses 
and gloves. 
2b09433 — Ethyl lactate Additiv e composition 
Ethyl lactate 
Char acter isation of the activ e 
substance 
Ethyl lactate 
Produced by chemical 
synthesis 
Purity: min. 97 % 
Chemical formula: 
C5H10O3 
CAS number 97-64-3 
FLAVIS No 09.433 
Method of analy sis(1) 
For the determination of 
ethyl lactate in the feed 
additive and in feed fla­
vouring premixtures. 
Gas chromat ography 
mass spectrometr y with 
retention time locking 
GC-MS-RT L. All animal 
species — — —  1. The additive shall be incor porated 
into the feed in the form of a pre­
mixture. 
2.In the directions for use of the ad­
ditive and premixtures, the storage 
and stability conditions shall be 
indicated. 
3.The recommended maximum con­
tent of the active substance shall 
be: 125 mg/kg of complet e fee­
dingstuff with a moisture cont ent 
of 12 %.  
4. On the label of the additive the 
following shall be indicated : 
‘Recommended maximum conte nt 
of the active substance of com ­
plete feedingstuff with a moisture 
content of 12 %: 125 mg/kg’. 
5.The functional group, the identif i­
cation number , the name and the 
added amount of the active sub­
stance shall be indicated on the la­
belling of the premixtures, feed 
mater ials and compo und feeding ­
stuffs, if the following content of 
the active substance in compl ete 
feedingstuff with a moisture con­
tent of 12 % is exceeded: 125 mg/ 
kg.  6 Febr uary 
2027 17.1.2017 L 13/136 Official Jour nal of the European Union EN     (1) (2) (3) (4) (5) (6) (7) (8) (9) 
6.For users of the additive and pre­
mixtures, feed business operat ors 
shall establish operational proce ­
dures and organisational measures 
to address potential risks by der­
mal contact or eyes contact. 
Where those risks cannot be elim ­
inated or reduced to a minimum 
by such procedures and measures, 
the additive and premixtures shall 
be used with personal prot ective 
equipment, including safety glasses 
and gloves. 
2b09434 — Butyl lactate Additiv e composition 
Butyl lactate 
Char acter isation of the activ e 
substance 
Butyl lactate 
Produced by chemical 
synthesis 
Purity: min. 95 % 
Chemical formula: 
C7H14O3 
CAS number 138-22-7 
FLAVIS No 09.434 
Method of analy sis(1) 
For the determination of 
butyl lactate in the feed 
additive and in feed fla­
vouring premixtures. 
Gas chromat ography 
mass spectrometr y with 
retention time locking 
GC-MS-RT L. All animal 
species — — —  1. The additive shall be incor porated 
into the feed in the form of a pre­
mixture. 
2.In the directions for use of the ad­
ditive and premixtures, the storage 
and stability conditions shall be 
indicated. 
3.The recommended maximum con­
tent of the active substance shall 
be: 5 mg/kg of compl ete feeding ­
stuff with a moisture content of 
12 %.  
4. On the label of the additive the 
following shall be indicated : 
‘Recommended maximum conte nt 
of the active substance of com ­
plete feedingstuff with a moisture 
content of 12 %: 5 mg/kg’. 
5.The functional group, the identif i­
cation number , the name and the 
added amount of the active sub­
stance shall be indicated on the la­
belling of the premixtures, feed 
mater ials and compo und feeding ­
stuffs, if the following content of 
the active substance in compl ete 
feedingstuff with a moisture con­
tent of 12 % is excee ded: 5 mg/kg.  6 Febr uary 
2027 17.1.2017 L 13/137 Official Jour nal of the European Union EN     (1) (2) (3) (4) (5) (6) (7) (8) (9) 
6.For users of the additive and pre­
mixtures, feed business operat ors 
shall establish operational proce ­
dures and organisational measures 
to address potential risks by der­
mal contact or eyes contact. 
Where those risks cannot be elim ­
inated or reduced to a minimum 
by such procedures and measures, 
the additive and premixtures shall 
be used with personal prot ective 
equipment, including safety glasses 
and gloves. 
2b09435 — Ethyl 4-oxo­
valerate Additiv e composition 
Ethyl 4-oxovalerate 
Char acter isation of the activ e 
substance 
Ethyl 4-oxovalerate 
Produced by chemical 
synthesis 
Purity: min. 98 % 
Chemical formula: 
C7H12O3 
CAS number 539-88-8 
FLAVIS No 09.435 
Method of analy sis(1) 
For the determination of 
ethyl 4-oxovalerate in the 
feed additive and in feed 
flavouring premixtures. 
Gas chromat ography 
mass spectrometr y with 
retention time locking 
GC-MS-RT L. All animal 
species — — —  1. The additive shall be incor porated 
into the feed in the form of a pre­
mixture. 
2.In the directions for use of the ad­
ditive and premixtures, the storage 
and stability conditions shall be 
indicated. 
3.The recommended maximum con­
tent of the active substance shall 
be: 5 mg/kg of compl ete feeding ­
stuff with a moisture content of 
12 %.  
4. On the label of the additive the 
following shall be indicated : 
‘Recommended maximum conte nt 
of the active substance of com ­
plete feedingstuff with a moisture 
content of 12 %: 5 mg/kg’. 
5.The functional group, the identif i­
cation number , the name and the 
added amount of the active sub­
stance shall be indicated on the la­
belling of the premixtures, feed 
mater ials and compo und feeding ­
stuffs, if the following content of 
the active substance in compl ete 
feedingstuff with a moisture con­
tent of 12 % is excee ded: 5 mg/kg.  6 Febr uary 
2027 17.1.2017 L 13/138 Official Jour nal of the European Union EN     (1) (2) (3) (4) (5) (6) (7) (8) (9) 
6.For users of the additive and pre­
mixtures, feed business operat ors 
shall establish operational proce ­
dures and organisational measures 
to address potential risks by der­
mal contact or eyes contact. 
Where those risks cannot be elim ­
inated or reduced to a minimum 
by such procedures and measures, 
the additive and premixtures shall 
be used with personal prot ective 
equipment, including safety glasses 
and gloves. 
2b09444 — Diethyl suc­
cinate Additiv e composition 
Diethyl succinate 
Char acter isation of the activ e 
substance 
Diethyl succinate 
Produced by chemical 
synthesis 
Purity: min. 98 % 
Chemical formula: 
C8H14O4 
CAS number 123-25-1 
FLAVIS No 09.444 
Method of analy sis(1) 
For the determination of 
diethyl succinate in the 
feed additive and in feed 
flavouring premixtures. 
Gas chromat ography 
mass spectrometr y with 
retention time locking 
GC-MS-RT L. All animal 
species — — —  1. The additive shall be incor porated 
into the feed in the form of a pre­
mixture. 
2.In the directions for use of the ad­
ditive and premixtures, the storage 
and stability conditions shall be 
indicated. 
3.The recommended maximum con­
tent of the active substance shall 
be: 5 mg/kg of compl ete feeding ­
stuff with a moisture content of 
12 %.  
4. On the label of the additive the 
following shall be indicated : 
‘Recommended maximum conte nt 
of the active substance of com ­
plete feedingstuff with a moisture 
content of 12 %: 5 mg/kg’. 
5.The functional group, the identif i­
cation number , the name and the 
added amount of the active sub­
stance shall be indicated on the la­
belling of the premixtures, feed 
mater ials and compo und feeding ­
stuffs, if the following content of 
the active substance in compl ete 
feedingstuff with a moisture con­
tent of 12 % is excee ded: 5 mg/kg.  6 Febr uary 
2027 17.1.2017 L 13/139 Official Jour nal of the European Union EN     (1) (2) (3) (4) (5) (6) (7) (8) (9) 
6.For users of the additive and pre­
mixtures, feed business operat ors 
shall establish operational proce ­
dures and organisational measures 
to address potential risks by der­
mal contact or eyes contact. 
Where those risks cannot be elim ­
inated or reduced to a minimum 
by such procedures and measures, 
the additive and premixtures shall 
be used with personal prot ective 
equipment, including safety glasses 
and gloves. 
2b09490 — Diethyl mal­
onate Additiv e composition 
Diethyl malonat e 
Char acter isation of the activ e 
substance 
Diethyl malonat e 
Produced by chemical 
synthesis 
Purity: min. 97 % 
Chemical formula: 
C7H12O4 
CAS number 105-53-3 
FLAVIS No 09.490 
Method of analy sis(1) 
For the determination of 
diethyl malonat e in the 
feed additive and in feed 
flavouring premixtures. 
Gas chromat ography 
mass spectrometr y with 
retention time locking 
GC-MS-RT L. All animal 
species — — —  1. The additive shall be incor porated 
into the feed in the form of a pre­
mixture. 
2.In the directions for use of the ad­
ditive and premixtures, the storage 
and stability conditions shall be 
indicated. 
3.The recommended maximum con­
tent of the active substance shall 
be: 5 mg/kg of compl ete feeding ­
stuff with a moisture content of 
12 %.  
4. On the label of the additive the 
following shall be indicated : 
‘Recommended maximum conte nt 
of the active substance of com ­
plete feedingstuff with a moisture 
content of 12 %: 5 mg/kg’. 
5.The functional group, the identif i­
cation number , the name and the 
added amount of the active sub­
stance shall be indicated on the la­
belling of the premixtures, feed 
mater ials and compo und feeding ­
stuffs, if the following content of 
the active substance in compl ete 
feedingstuff with a moisture con­
tent of 12 % is excee ded: 5 mg/kg.  6 Febr uary 
2027 17.1.2017 L 13/140 Official Jour nal of the European Union EN     (1) (2) (3) (4) (5) (6) (7) (8) (9) 
6.For users of the additive and pre­
mixtures, feed business operat ors 
shall establish operational proce ­
dures and organisational measures 
to address potential risks by der­
mal contact or eyes contact. 
Where those risks cannot be elim ­
inated or reduced to a minimum 
by such procedures and measures, 
the additive and premixtures shall 
be used with personal prot ective 
equipment, including safety glasses 
and gloves. 
2b09491 — Butyl-O-bu ­
tyryllactat e Additiv e composition 
Butyl-O-butyr yllactat e 
Char acter isation of the activ e 
substance 
Butyl-O-butyr yllactat e 
Produced by chemical 
synthesis 
Purity: min. 95 % 
Chemical formula: 
C11H20O4 
CAS number 7492-70-8 
FLAVIS No 09.491 
Method of analy sis(1) 
For the determination of 
butyl-O-butyr yllactat e in 
the feed additive and in 
feed flavouring premix ­
tures. 
Gas chromat ography 
mass spectrometr y with 
retention time locking 
GC-MS-RT L. All animal 
species — — —  1. The additive shall be incor porated 
into the feed in the form of a pre­
mixture. 
2.In the directions for use of the ad­
ditive and premixtures, the storage 
and stability conditions shall be 
indicated. 
3.The recommended maximum con­
tent of the active substance shall 
be: 5 mg/kg of compl ete feeding ­
stuff with a moisture content of 
12 %.  
4. On the label of the additive the 
following shall be indicated : 
‘Recommended maximum conte nt 
of the active substance of com ­
plete feedingstuff with a moisture 
content of 12 %: 5 mg/kg’. 
5.The functional group, the identif i­
cation number , the name and the 
added amount of the active sub­
stance shall be indicated on the la­
belling of the premixtures, feed 
mater ials and compo und feeding ­
stuffs, if the following content of 
the active substance in compl ete 
feedingstuff with a moisture con­
tent of 12 % is excee ded: 5 mg/kg.  6 Febr uary 
2027 17.1.2017 L 13/141 Official Jour nal of the European Union EN     (1) (2) (3) (4) (5) (6) (7) (8) (9) 
6.For users of the additive and pre­
mixtures, feed business operat ors 
shall establish operational proce ­
dures and organisational measures 
to address potential risks by der­
mal contact or eyes contact. 
Where those risks cannot be elim ­
inated or reduced to a minimum 
by such procedures and measures, 
the additive and premixtures shall 
be used with personal prot ective 
equipment, including safety glasses 
and gloves. 
2b09545 — Hex-3-enyl 
lactate Additiv e composition 
Hex-3-en yl lactat e 
Char acter isation of the activ e 
substance 
Hex-3-en yl lactat e 
Produced by chemical 
synthesis 
Purity: min. 96 % 
Chemical formula: 
C9H16O3 
CAS number 61931-81-5 
FLAVIS No 09.545 
Method of analy sis(1) 
For the determination of 
hex-3-enyl lactate in the 
feed additive and in feed 
flavouring premixtures. 
Gas chromat ography 
mass spectrometr y with 
retention time locking 
GC-MS-RT L. All animal 
species — — —  1. The additive shall be incor porated 
into the feed in the form of a pre­
mixture. 
2.In the directions for use of the ad­
ditive and premixtures, the storage 
and stability conditions shall be 
indicated. 
3.The recommended maximum con­
tent of the active substance shall 
be: 5 mg/kg of compl ete feeding ­
stuff with a moisture content of 
12 %.  
4. On the label of the additive the 
following shall be indicated : 
‘Recommended maximum conte nt 
of the active substance of com ­
plete feedingstuff with a moisture 
content of 12 %: 5 mg/kg’. 
5.The functional group, the identif i­
cation number , the name and the 
added amount of the active sub­
stance shall be indicated on the la­
belling of the premixtures, feed 
mater ials and compo und feeding ­
stuffs, if the following content of 
the active substance in compl ete 
feedingstuff with a moisture con­
tent of 12 % is excee ded: 5 mg/kg.  6 Febr uary 
2027 17.1.2017 L 13/142 Official Jour nal of the European Union EN     (1) (2) (3) (4) (5) (6) (7) (8) (9) 
6.For users of the additive and pre­
mixtures, feed business operat ors 
shall establish operational proce ­
dures and organisational measures 
to address potential risks by der­
mal contact or eyes contact. 
Where those risks cannot be elim ­
inated or reduced to a minimum 
by such procedures and measures, 
the additive and premixtures shall 
be used with personal prot ective 
equipment, including safety glasses 
and gloves. 
2b09580 — Hexyl lactate Additiv e composition 
Hexyl lactate 
Char acter isation of the activ e 
substance 
Hexyl lactate 
Produced by chemical 
synthesis 
Purity: min. 95 % 
Chemical formula: 
C9H18O3 
CAS number 20279-51-0 
FLAVIS No 09.580 
Method of analy sis(1) 
For the determination of 
hexyl lactat e in the feed 
additive and in feed fla­
vouring premixtures. 
Gas chromat ography 
mass spectrometr y with 
retention time locking 
GC-MS-RT L. All animal 
species — — —  1. The additive shall be incor porated 
into the feed in the form of a pre­
mixture. 
2.In the directions for use of the ad­
ditive and premixtures, the storage 
and stability conditions shall be 
indicated. 
3.The recommended maximum con­
tent of the active substance shall 
be: 5 mg/kg of compl ete feeding ­
stuff with a moisture content of 
12 %.  
4. On the label of the additive the 
following shall be indicated : 
‘Recommended maximum conte nt 
of the active substance of com ­
plete feedingstuff with a moisture 
content of 12 %: 5 mg/kg’. 
5.The functional group, the identif i­
cation number , the name and the 
added amount of the active sub­
stance shall be indicated on the la­
belling of the premixtures, feed 
mater ials and compo und feeding ­
stuffs, if the following content of 
the active substance in compl ete 
feedingstuff with a moisture con­
tent of 12 % is excee ded: 5 mg/kg.  6 Febr uary 
2027 17.1.2017 L 13/143 Official Jour nal of the European Union EN     (1) (2) (3) (4) (5) (6) (7) (8) (9) 
6.For users of the additive and pre­
mixtures, feed business operat ors 
shall establish operational proce ­
dures and organisational measures 
to address potential risks by der­
mal contact or eyes contact. 
Where those risks cannot be elim ­
inated or reduced to a minimum 
by such procedures and measures, 
the additive and premixtures shall 
be used with personal prot ective 
equipment, including safety glasses 
and gloves. 
2b10006 — Butyro-1,4- 
lactone Additiv e composition 
Butyro-1,4-lact one 
Char acter isation of the activ e 
substance 
Butyro-1,4-lact one 
Produced by chemical 
synthesis 
Purity: min. 98 % 
Chemical formula: 
C4H6O2 
CAS number 96-48-0 
FLAVIS No 10.006 
Method of analy sis(1) 
For the determination of 
butyro-1,4-lact one in the 
feed additive and in feed 
flavouring premixtures. 
Gas chromat ography 
mass spectrometr y with 
retention time locking 
GC-MS-RT L. All animal 
species — — —  1. The additive shall be incor porated 
into the feed in the form of a pre­
mixture. 
2.In the directions for use of the ad­
ditive and premixtures, the storage 
and stability conditions shall be 
indicated. 
3.The recommended maximum con­
tent of the active substance shall 
be: 5 mg/kg of compl ete feeding ­
stuff with a moisture content of 
12 %.  
4. On the label of the additive the 
following shall be indicated : 
‘Recommended maximum conte nt 
of the active substance of com ­
plete feedingstuff with a moisture 
content of 12 %: 5 mg/kg’. 
5.The functional group, the identif i­
cation number , the name and the 
added amount of the active sub­
stance shall be indicated on the la­
belling of the premixtures, feed 
mater ials and compo und feeding ­
stuffs, if the following content of 
the active substance in compl ete 
feedingstuff with a moisture con­
tent of 12 % is excee ded: 5 mg/kg.  6 Febr uary 
2027 17.1.2017 L 13/144 Official Jour nal of the European Union EN     (1) (2) (3) (4) (5) (6) (7) (8) (9) 
6.For users of the additive and pre­
mixtures, feed business operat ors 
shall establish operational proce ­
dures and organisational measures 
to address potential risks by der­
mal contact or eyes contact. 
Where those risks cannot be elim ­
inated or reduced to a minimum 
by such procedures and measures, 
the additive and premixtures shall 
be used with personal prot ective 
equipment, including safety glasses 
and gloves. 
2b10007 — Decano-1,5- 
lactone Additiv e composition 
Decano-1,5-lact one 
Char acter isation of the activ e 
substance 
Decano-1,5-lact one 
Produced by chemical 
synthesis 
Purity: min. 98 % 
Chemical formula: 
C10H18O2 
CAS number 705-86-2 
FLAVIS No 10.007 
Method of analy sis(1) 
For the determination of 
decano-1,5-lactone in the 
feed additive and in feed 
flavouring premixtures. 
Gas chromat ography 
mass spectrometr y with 
retention time locking 
GC-MS-RT L. All animal 
species — — —  1. The additive shall be incor porated 
into the feed in the form of a pre­
mixture. 
2.In the directions for use of the ad­
ditive and premixtures, the storage 
and stability conditions shall be 
indicated. 
3.The recommended maximum con­
tent of the active substance shall 
be: 5 mg/kg of compl ete feeding ­
stuff with a moisture content of 
12 %.  
4. On the label of the additive the 
following shall be indicated : 
‘Recommended maximum conte nt 
of the active substance of com ­
plete feedingstuff with a moisture 
content of 12 %: 5 mg/kg’. 
5.The functional group, the identif i­
cation number , the name and the 
added amount of the active sub­
stance shall be indicated on the la­
belling of the premixtures, feed 
mater ials and compo und feeding ­
stuffs, if the following content of 
the active substance in compl ete 
feedingstuff with a moisture con­
tent of 12 % is excee ded: 5 mg/kg.  6 Febr uary 
2027 17.1.2017 L 13/145 Official Jour nal of the European Union EN     (1) (2) (3) (4) (5) (6) (7) (8) (9) 
6.For users of the additive and pre­
mixtures, feed business operat ors 
shall establish operational proce ­
dures and organisational measures 
to address potential risks by der­
mal contact or eyes contact. 
Where those risks cannot be elim ­
inated or reduced to a minimum 
by such procedures and measures, 
the additive and premixtures shall 
be used with personal prot ective 
equipment, including safety glasses 
and gloves. 
2b10011 — Undecano- 
1,5-lactone Additiv e composition 
Undecano-1,5-lactone 
Char acter isation of the activ e 
substance 
Undecano-1,5-lactone 
Produced by chemical 
synthesis 
Purity: min. 98 % 
Chemical formula: 
C11H20O2 
CAS number 710-04-3 
FLAVIS No 10.011 
Method of analy sis(1) 
For the determination of 
undecano-1,5-lactone in 
the feed additive and in 
feed flavouring premix ­
tures. 
Gas chromat ography 
mass spectrometr y with 
retention time locking 
GC-MS-RT L. All animal 
species — — —  1. The additive shall be incor porated 
into the feed in the form of a pre­
mixture. 
2.In the directions for use of the ad­
ditive and premixtures, the storage 
and stability conditions shall be 
indicated. 
3.The recommended maximum con­
tent of the active substance shall 
be: 5 mg/kg of compl ete feeding ­
stuff with a moisture content of 
12 %.  
4. On the label of the additive the 
following shall be indicated : 
‘Recommended maximum conte nt 
of the active substance of com ­
plete feedingstuff with a moisture 
content of 12 %: 5 mg/kg’ 
5.The functional group, the identif i­
cation number , the name and the 
added amount of the active sub­
stance shall be indicated on the la­
belling of the premixtures, feed 
mater ials and compo und feeding ­
stuffs, if the following content of 
the active substance in compl ete 
feedingstuff with a moisture con­
tent of 12 % is excee ded: 5 mg/kg.  6 Febr uary 
2027 17.1.2017 L 13/146 Official Jour nal of the European Union EN     (1) (2) (3) (4) (5) (6) (7) (8) (9) 
6.For users of the additive and pre­
mixtures, feed business operat ors 
shall establish operational proce ­
dures and organisational measures 
to address potential risks by der­
mal contact or eyes contact. 
Where those risks cannot be elim ­
inated or reduced to a minimum 
by such procedures and measures, 
the additive and premixtures shall 
be used with personal prot ective 
equipment, including safety glasses 
and gloves. 
2b10013 — Pentano-1,4- 
lactone Additiv e composition 
Pentano-1,4-lactone 
Char acter isation of the activ e 
substance 
Pentano-1,4-lactone 
Produced by chemical 
synthesis 
Purity: min. 95 % 
Chemical formula: 
C5H8O2 
CAS number 108-29-2 
FLAVIS No 10.013 
Method of analy sis(1) 
For the determination of 
pentano-1,4-lactone in 
the feed additive and in 
feed flavouring premix ­
tures. 
Gas chromat ography 
mass spectrometr y with 
retention time locking 
GC-MS-RT L. All animal 
species — — —  1. The additive shall be incor porated 
into the feed in the form of a pre­
mixture. 
2.In the directions for use of the ad­
ditive and premixtures, the storage 
and stability conditions shall be 
indicated. 
3.The recommended maximum con­
tent of the active substance shall 
be: 5 mg/kg of compl ete feeding ­
stuff with a moisture content of 
12 %.  
4. On the label of the additive the 
following shall be indicated : 
‘Recommended maximum conte nt 
of the active substance of com ­
plete feedingstuff with a moisture 
content of 12 %: 5 mg/kg’. 
5.The functional group, the identif i­
cation number , the name and the 
added amount of the active sub­
stance shall be indicated on the la­
belling of the premixtures, feed 
mater ials and compo und feeding ­
stuffs, if the following content of 
the active substance in compl ete 
feedingstuff with a moisture con­
tent of 12 % is excee ded: 5 mg/kg.  6 Febr uary 
2027 17.1.2017 L 13/147 Official Jour nal of the European Union EN     (1) (2) (3) (4) (5) (6) (7) (8) (9) 
6.For users of the additive and pre­
mixtures, feed business operat ors 
shall establish operational proce ­
dures and organisational measures 
to address potential risks by der­
mal contact or eyes contact. 
Where those risks cannot be elim ­
inated or reduced to a minimum 
by such procedures and measures, 
the additive and premixtures shall 
be used with personal prot ective 
equipment, including safety glasses 
and gloves. 
2b10014 — Nonano-1,5- 
lactone Additiv e composition 
Nonano-1,5-lacton e 
Char acter isation of the activ e 
substance 
Nonano-1,5-lacton e 
Produced by chemical 
synthesis 
Purity: min. 98 % 
Chemical formula: 
C9H16O2 
CAS number 3301-94-8 
FLAVIS No 10.014 
Method of analy sis(1) 
For the determination of 
nonano-1,5-lactone in the 
feed additive and in feed 
flavouring premixtures. 
Gas chromat ography 
mass spectrometr y with 
retention time locking 
GC-MS-RT L. All animal 
species — — —  1. The additive shall be incor porated 
into the feed in the form of a pre­
mixture. 
2.In the directions for use of the ad­
ditive and premixtures, the storage 
and stability conditions shall be 
indicated. 
3.The recommended maximum con­
tent of the active substance shall 
be: 5 mg/kg of compl ete feeding ­
stuff with a moisture content of 
12 %.  
4. On the label of the additive the 
following shall be indicated : 
‘Recommended maximum conte nt 
of the active substance of com ­
plete feedingstuff with a moisture 
content of 12 %: 5 mg/kg’ 
5.The functional group, the identif i­
cation number , the name and the 
added amount of the active sub­
stance shall be indicated on the la­
belling of the premixtures, feed 
mater ials and compo und feeding ­
stuffs, if the following content of 
the active substance in compl ete 
feedingstuff with a moisture con­
tent of 12 % is excee ded: 5 mg/kg.  6 Febr uary 
2027 17.1.2017 L 13/148 Official Jour nal of the European Union EN     (1) (2) (3) (4) (5) (6) (7) (8) (9) 
6.For users of the additive and pre­
mixtures, feed business operat ors 
shall establish operational proce ­
dures and organisational measures 
to address potential risks by der­
mal contact or eyes contact. 
Where those risks cannot be elim ­
inated or reduced to a minimum 
by such procedures and measures, 
the additive and premixtures shall 
be used with personal prot ective 
equipment, including safety glasses 
and gloves. 
2b10015 — Octano-1,5- 
lactone Additiv e composition 
Octano-1,5-lactone 
Char acter isation of the activ e 
substance 
Octano-1,5-lactone 
Produced by chemical 
synthesis 
Purity: min. 98 % 
Chemical formula: 
C8H14O2 
CAS number 698-76-0 
FLAVIS No 10.015 
Method of analy sis(1) 
For the determination of 
octano-1,5-lacto ne in the 
feed additive and in feed 
flavouring premixtures. 
Gas chromat ography 
mass spectrometr y with 
retention time locking 
GC-MS-RT L. All animal 
species — — —  1. The additive shall be incor porated 
into the feed in the form of a pre­
mixture. 
2.In the directions for use of the ad­
ditive and premixtures, the storage 
and stability conditions shall be 
indicated. 
3.The recommended maximum con­
tent of the active substance shall 
be: 5 mg/kg of compl ete feeding ­
stuff with a moisture content of 
12 %.  
4. On the label of the additive the 
following shall be indicated : 
‘Recommended maximum conte nt 
of the active substance of com ­
plete feedingstuff with a moisture 
content of 12 %: 5 mg/kg’. 
5.The functional group, the identif i­
cation number , the name and the 
added amount of the active sub­
stance shall be indicated on the la­
belling of the premixtures, feed 
mater ials and compo und feeding ­
stuffs, if the following content of 
the active substance in compl ete 
feedingstuff with a moisture con­
tent of 12 % is excee ded: 5 mg/kg.  6 Febr uary 
2027 17.1.2017 L 13/149 Official Jour nal of the European Union EN     (1) (2) (3) (4) (5) (6) (7) (8) (9) 
6.For users of the additive and pre­
mixtures, feed business operat ors 
shall establish operational proce ­
dures and organisational measures 
to address potential risks by der­
mal contact or eyes contact. 
Where those risks cannot be elim ­
inated or reduced to a minimum 
by such procedures and measures, 
the additive and premixtures shall 
be used with personal prot ective 
equipment, including safety glasses 
and gloves. 
2b10020 — Heptano- 
1,4-lactone Additiv e composition 
Hep tano-1,4-lactone 
Char acter isation of the activ e 
substance 
Hep tano-1,4-lactone 
Produced by chemical 
synthesis 
Purity: min. 98 % 
Chemical formula: 
C7H12O2 
CAS number 105-21-5 
FLAVIS No 10.020 
Method of analy sis(1) 
For the determination of 
hepta no-1,4-lactone in 
the feed additive and in 
feed flavouring premix ­
tures. 
Gas chromat ography 
mass spectrometr y with 
retention time locking 
GC-MS-RT L. All animal 
species — — —  1. The additive shall be incor porated 
into the feed in the form of a pre­
mixture. 
2.In the directions for use of the ad­
ditive and premixtures, the storage 
and stability conditions shall be 
indicated. 
3.The recommended maximum con­
tent of the active substance shall 
be: 5 mg/kg of compl ete feeding ­
stuff with a moisture content of 
12 %.  
4. On the label of the additive the 
following shall be indicated : 
‘Recommended maximum conte nt 
of the active substance of com ­
plete feedingstuff with a moisture 
content of 12 %: 5 mg/kg’. 
5.The functional group, the identif i­
cation number , the name and the 
added amount of the active sub­
stance shall be indicated on the la­
belling of the premixtures, feed 
mater ials and compo und feeding ­
stuffs, if the following content of 
the active substance in compl ete 
feedingstuff with a moisture con­
tent of 12 % is excee ded: 5 mg/kg.  6 Febr uary 
2027 17.1.2017 L 13/150 Official Jour nal of the European Union EN     (1) (2) (3) (4) (5) (6) (7) (8) (9) 
6.For users of the additive and pre­
mixtures, feed business operat ors 
shall establish operational proce ­
dures and organisational measures 
to address potential risks by der­
mal contact or eyes contact. 
Where those risks cannot be elim ­
inated or reduced to a minimum 
by such procedures and measures, 
the additive and premixtures shall 
be used with personal prot ective 
equipment, including safety glasses 
and gloves. 
2b10021 — Hexano-1,4- 
lactone Additiv e composition 
Hexano-1,4-lact one 
Char acter isation of the activ e 
substance 
Hexano-1,4-lact one 
Produced by chemical 
synthesis 
Purity: min. 98 % 
Chemical formula: 
C6H10O2 
CAS number 695-06-7 
FLAVIS No 10.021 
Method of analy sis(1) 
For the determination of 
hexano-1,4-lacton e in the 
feed additive and in feed 
flavouring premixtures. 
Gas chromat ography 
mass spectrometr y with 
retention time locking 
GC-MS-RT L. All animal 
species — — —  1. The additive shall be incor porated 
into the feed in the form of a pre­
mixture. 
2.In the directions for use of the ad­
ditive and premixtures, the storage 
and stability conditions shall be 
indicated. 
3.The recommended maximum con­
tent of the active substance shall 
be: 5 mg/kg of compl ete feeding ­
stuff with a moisture content of 
12 %.  
4. On the label of the additive the 
following shall be indicated : 
‘Recommended maximum conte nt 
of the active substance of com ­
plete feedingstuff with a moisture 
content of 12 %: 5 mg/kg’. 
5.The functional group, the identif i­
cation number , the name and the 
added amount of the active sub­
stance shall be indicated on the la­
belling of the premixtures, feed 
mater ials and compo und feeding ­
stuffs, if the following content of 
the active substance in compl ete 
feedingstuff with a moisture con­
tent of 12 % is excee ded: 5 mg/kg.  6 Febr uary 
2027 17.1.2017 L 13/151 Official Jour nal of the European Union EN     (1) (2) (3) (4) (5) (6) (7) (8) (9) 
6.For users of the additive and pre­
mixtures, feed business operat ors 
shall establish operational proce ­
dures and organisational measures 
to address potential risks by der­
mal contact or eyes contact. 
Where those risks cannot be elim ­
inated or reduced to a minimum 
by such procedures and measures, 
the additive and premixtures shall 
be used with personal prot ective 
equipment, including safety glasses 
and gloves. 
(1)  Details of the analytical methods are available at the following address of the Reference Laboratory : https://ec.europa.eu/jrc/en/eurl/feed-additives/evaluation-repor ts   17.1.2017 L 13/152 Official Jour nal of the European Union EN