On 24 May 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. Dichlorodioctylstannane

   WGK 3 (highly hazardous to water)

2. Alcohol ethoxylates with a carbon chain length between ≥ C12 and C20 and an ethoxylation degree < 15 EO

   WGK 2 (obviously hazardous to water)