On 20 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. 1-Naphthalenamine, N-[(1,1,3,3-tetramethylbutyl)phenyl]-, polymer with 4-octyl-N-(4-octylphenyl)benzenamine (average MW 1835 g/mol)

   WGK 1 (slightly hazardous to water)

2. Poly[oxy(methyl-1,2-ethanediyl)], α-[[[(dimethoxymethylsilyl)methyl]amino]carbonyl]-ω-butoxy- (average molecular weight 5000 g/mol), residual Methanol ≤ 0.5%

   WGK 1 (slightly hazardous to water)

3. Poly[oxy(methyl-1,2-ethanediyl)], α-[[[(dimethoxymethylsilyl)methyl]amino]carbonyl]-ω-[[[[(dimethoxymethylsilyl)methyl]amino]carbonyl]oxy]- (average MW 16800 g/mol), residual Methanol ≤ 0.5%

   WGK 1 (slightly hazardous to water)

4. Reaction mass of 4,4'-Isopropylidenediphenol, 1-chloro-2,3-epoxypropane and ethylenediamine

   WGK 3 (highly hazardous to water)

5. Albumins

   WGK 1 (slightly hazardous to water)