On 24 July 2023, ECHA started a 60 day public commenting period on the Harmonised Classification and Labelling (CLH) proposals for the following substances:

1. A. 2-(4-tert-butylbenzyl) propionaldehyde

   B. 4-tert-butylbenzoic acid

   C. 3-(4-tert-butylphenyl)propionaldehyde [1]; 4-tert-butyltoluene [2]; 4-tert-butylbenzaldehyde [3]; methyl 4-tert-butylbenzoate [4]

2. A. p-Cymene; 1-isopropyl-4-methylbenzene

   B. 3-p-cumenyl-2-methylpropionaldehyde; 2-methyl-3-(4-isopropylphenyl)propanal [1]; 3-(p-cumenyl)propionaldehyde; 3-(4-isopropylphenyl)propanal [2]; 4-isopropylbenzaldehyde; cuminic aldehyde [3]; 4-isopropylbenzoic acid; cuminic acid [4]