On 5 June 2023, the German Ordinance on Facilities Handling Substances That Are Hazardous to Water (AwSV) List of published water hazard class (WGK) classifications was updated. The following substances were newly assigned a WGK:

1. 2-Methoxyethyl acrylate

   WGK 3 (highly hazardous to water)

2. Tetramethylammonium-2,2-dimethylpropionate

   WGK 3 (highly hazardous to water)

3. Magnesium acrylate

   WGK 1 (slightly hazardous to water)

4. Reaction mass of ethylbenzene and xylene

   WGK 2 (obviously hazardous to water)

5. Carbonohydrazide

   WGK 2 (obviously hazardous to water)

6. N,N'-bis(5,5-dimethyl-1,3,2-dioxaphosphinane-2-oxide-2-yl)ethane-1,2-diamine

   WGK 1 (slightly hazardous to water)

7. 2-Ethylhexane-1,3-diol

   WGK 1 (slightly hazardous to water)