On 8 May 2023, the following substances had a Harmonised Classification and Labelling (CLH) proposal submitted:

1. Ulexite (CaNaH12(BO3)5.2H2O); Ulexite (CaNaH12(BO3)5.2H2O), calcined

2. Tincalconite (B4Na2O7.5H2O)

3. Colemanite (CaH(BO2)3.2H2O); Boron calcium oxide (B6Ca2O11), hydrate (1:5); Colemanite, calcined

This brought the number of submitted CLH intentions to 74.