On 16 November 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. 2,4-Hexadienoic acid, 1,1’-[2-ethyl-2-[[(1-oxo-2,4-hexadien-1-yl)oxy]methyl]-1,3-propanediyl] ester

   WGK 1 (slightly hazardous to water)

2. Magnesium neodecanoate

   WGK 1 (slightly hazardous to water)

3. N,N’-di[3-(p-toluene sulfonyl)oxy]phenyl urea

   WGK nwg (non-hazardous to water)