On 8 March 2024, ECHA started a 45 day public commenting period on 20 testing proposals for the following substances:

1. 1,3-bis(isocyanatomethyl)benzene

2. 2,5-Furandione, dihydro-, mono-C15-20-alkenyl derivs.

3. 2-[(2-methoxy-4-nitrophenyl)azo]-N-(2-methoxyphenyl)-3-oxobutyramide

4. 3-[(5-cyano-6-hydroxy-1,4-dimethyl-2-oxo-1,2-dihydropyridin-3-yl)diazenyl]phenyl benzoate

5. 4-methylcyclohexanone

6. [3-(2,3-epoxypropoxy)propyl]trimethoxysilane

7. Benzyldimethylamine

8. Bis(4-methylbenzoyl)peroxide

9. Calcium 4-chloro-2-(5-hydroxy-3-methyl-1-(3-sulfonatophenyl)pyrazol-4-ylazo)-5-methylbenzenesulfonate

10. Copper(I, II) sulfite

11. Ethylbenzene

12. Methyl benzoate

13. N,N,N',N'-tetramethyl-2,2'-oxybis(ethylamine)

14. N-(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-4-[[2-methoxy-5-[(phenylamino)carbonyl]phenyl]azo]naphthalene-2-carboxamide

15. Tris(p-isocyanatophenyl) thiophosphate