On 3 April 2023, ECHA started a 45 day public commenting period on 22 testing proposals for the following substances:

1. 1,3,5-tris(2,3-dibromopropyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione

2. A dried sludge product resulting from the treatment process of domestic wastewater. The exact processes followed for the production of the dried sludge are: Preliminary and secondary treatment of the wastewater stream, thickening, dehydration and drying of the excess sludge

3. Octyl octanoate

4. N,N’-di[3-(p-toluene sulfonyl)oxy]phenyl urea

5. Sodium hydrogen m-sulphonatobenzoate

6. 2,2,6,6-tetramethyl-4-oxopiperidinooxy

7. 3-((C12-18)-acylamino)-N-(2-((2-hydroxyethyl)amino)-2-oxoethyl)-N,N-dimethyl-1-propanaminium chloride

8. 4,4'-methylenedi-2,6-xylenol

9. Dioctadecyl 3,3'-thiodipropionate

10. Dodecyl methacrylate

11. N-butyl phenyl ether

12. Octylphosphonic acid

13. Sodium p-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]benzenesulphonate

14. Tert-butyl peracetate