COMMISSION IMPLEMENTING REGUL ATION (EU) 2021/2092 
of 29 November 2021
concer ning the author isation of potassium diformate as a feed additiv e for pigs for fattening and 
weaned piglets 
(Text with EEA relevance) 
THE EUR OPEAN COMMISSION,
Havi ng regar d to the Treaty on the Functioning of the European Union,
Havi ng rega rd to Regulation (EC) No 1831/2003 of the European Parliament and of the Council of 22 Sept ember 2003 on 
additives for use in animal nutr ition (1), and in particular Article 9(2) thereof,
Whereas:
(1) Regulation (EC) No 1831/2003 provid es for the author isation of additives for use in animal nutr ition and for the 
grounds and procedures for granting such an author isation.
(2) In accordance with Article 7 of Regulation (EC) No 1831/2003 an application was submitted for the author isation 
of potassium diformate . That application was accompan ied by the particulars and documents required under 
Article 7(3) of Regulation (EC) No 1831/2003.
(3) The application concer ns the author isation of potassium diformate as a feed additive for pigs for fattening and 
weaned piglets, to be classif ied in the cate gory ‘technological additives ’.
(4) The European Food Safety Author ity (‘the Author ity’) concluded in its opinion of 5 May 2021 (2)that, under the 
proposed conditions of use, potassium diformat e does not have adverse effects on animal health, consumer safety 
or the environment. It also concluded that the substance does not raise concer ns regar ding the effects on the 
respirato ry system and the skin but is an eye irritant. Theref ore, the Commission considers that appropr iate 
prote ctive measures should be taken to prevent adverse effects on human health, in particular as regar ds the users 
of the additive. The Author ity also concluded that the substance has the poten tial to be efficacious as a 
technological additive in feedingstuffs. It also verified the repor t on the methods of analysis of the feed additive in 
feed submitted by the Reference Laborator y set up by Regulation (EC) No 1831/2003.
(5) The assessment of potassium diformate shows that the conditions for author isation, as provid ed for in Article 5 of 
Regulation (EC) No 1831/2003, are satisfi ed. According ly, the use of that substance should be author ised as 
specifi ed in the Annex to this Regulation.
(6) The measures provid ed 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
The substance specifi ed in the Annex, belonging to the additive cate gory ‘technological additives ’ and to the functional 
group ‘acidity regulators’, is author ised as an additive in animal nutr ition, subject to the conditions laid down in that Annex.
(1)OJ L 268, 18.10.2003, p. 29.
(2)EFSA Jour nal 2021;19(5):6617.EN Offi cial Jour nal of the European Union L 427/166 30.11.2021  Article 2
This Regulation shall enter into force on the twentieth day followi ng 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, 29 November 2021 .
For the Commission
The President
Ursula VON DER LEYENEN Offi cial Jour nal of the European Union 30.11.2021 L 427/167  ANNEX 
Identifica -
tion 
number of 
the additiveAdditiveComposition, chem ical formula, descr iption, 
analytical methodSpecies or categor y of 
animalMaximum 
ageMinimum 
contentMaximum 
content
Other provisi onsEnd of period of 
author isationmg/kg of complet e 
feedi ngstuff with a 
moisture content of 
12 %
Categor y of technological additiv es
Functional group: acidity regulators
1j001 Potassium 
diformat eAdditive composition:
Potassium diformate ≥ 98 %Pigs for fattening
Weaned piglets- - 6 000 1.In the directions for use of the additive 
and premixtures, the stora ge condi ­
tions shall be indicated .
2.The maximum cont ent of potassium 
diformate shall be 6 000 mg/kg of 
compl ete feedingstuff with a moisture 
conte nt of 12 %, whether used alone as 
an acidity regulator or used in 
combination with other sources of 
potassium diformate.
3.For users of the additive and premix ­
tures, feed business operat ors shall es­
tablish operational procedures and or­
gani sational measures to address 
poten tial risks resulting from its use. 
Where those risks cannot be eliminated 
or reduced to a minimum by such pro­
cedures and measures, the additive and 
premixtures shall be used with personal 
prote ctive equipment, including eyes 
prote ction.20 December 
2031
Char acter isation of the active substance:
Potassium diformate
CAS No: 20642-05-1
Einecs No: 243-934-6
C2H3O4K
Analytical method (1)
For the determination of potassium 
diformate (as total formic acid) in the 
feed additive, premixture, feedingstuffs:
—Ion chromat ography with conduc ­
tivity detection (IC-CD) – EN 17294;
For the determination of potassium in 
the feed additive:
— Atomic absor ption spectrometr y 
(AAS) – EN ISO 6869; or
— Inductively coupled plasma-atomic 
emission spectrometr y (ICP -AES) – 
EN15510.
(1)Details of the analytical methods are avail able at the follo wing address of the Reference Laboratory : https://ec.europa.eu/jrc/en/eurl/feed-additives/evaluation-repor ts.EN Offi cial Jour nal of the European Union L 427/168 30.11.2021