As far as cosmetics are concerned, this consultation covers nano synthetic amorphous silicas without surface modification, which have been assigned CAS numbers:
• 112945-52-5
• 112926-00-8
The INCIs “Silica” and “Hydrated silica” fall within this scope.
These substances are not currently regulated by European Cosmetics Regulation 1223/2009, nor listed in Annex VI of European CLP Regulation 1272/2008.

The Netherlands proposes the following classification.

Identification
Index number
• TBD
Chemical name
• Silica, amorphous, fumed, cryst.-free; Pyrogenic, synthetic amorphous silica, nano [1]
Silica gel, pptd., cryst.-free; Precipitated silica, silica gel, colloidal silica, amorphous, nano [2]
EC numbers
• - [1]
• - [2]
CAS numbers
• 112945-52-5 [1]
• 112926-00-8 [2]
Classification
Hazard class and Category code(s)
• STOT RE 1
Hazard statement code(s)
• H372 (respiratory tract) (inhalation) - Causes damage to organs (or a specific organ) through prolonged or repeated exposure.
Labelling
Pictogram, Signal word code(s)
• GHS08
• DGR (Danger)
Hazard statement code(s)
• H372 (respiratory tract) (inhalation) - Causes damage to organs (or a specific organ) through prolonged or repeated exposure.

This consultation is open until 9 August 2024.

Sources
• ECHA Weekly - Consultations on harmonised classification and labelling, ECHA, …