On 15 January 2024, ECHA started a 45 day public commenting period on 10 testing proposals for the following substances:

1. Trimethylolpropane and its reaction products with methyloxirane

2. Reaction products of n-octanol and acrylic acid, first distillation pitch

3. Formaldehyde, reaction products with m-phenylenediamine, sodium sulfide (Na2S) and sulfur

4. C18 unsaturated fatty acids, reaction products with 1-aminopropan-2-ol, maleic anhydride and sodium bisulfite

5. 2-propenoic acid, butyl ester, reaction products with butadiene and sulfur

6. 2-methyl-1,3-propanediol

7. 2,2'-[oxybis(methylene)]-bis[2-ethylpropane-1,3-diol]