On 7 November 2022, 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. Methyl formate

   WGK 2 (obviously hazardous to water)

2. 1,3-diphenylguanidine

   WGK 3 (highly hazardous to water)

3. 2-chlorobenzaldehyde

   WGK 2 (obviously hazardous to water)

4. Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate

   WGK 3 (highly hazardous to water)

5. Ethylenebis(oxyethylene) bis[3-(5-tert-butyl-4-hydroxy-m-tolyl)propionate]

   WGK 2 (obviously hazardous to water)

6. 1-Methylpyrrolidine

   WGK 3 (highly hazardous to water)

7. Ruthenium(III)-chloride-hydrate

   WGK 3 (highly hazardous to water)

8. Phosphinic acid, P-[3-(acetyloxy)-3-cyanopropyl]-P-methyl-, butyl ester

   WGK 3 (highly hazardous to water)

9. Reaction mass of bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate and methyl 1,2,2,6,6-pentamethyl-4-piperidyl sebacate

   WGK 3 (highly hazardous to water)

10. (S)-1-Phenylpropylamine

    WGK 3 (highly hazardous to water)

11. 1-Phenylpropylamine

    WGK 3 (highly hazardous to water)

12. Urea, N,N′-bis[3-(dimethylamino)propyl]-, polymer with 1,1′-oxybis[2-chloroethane] (average molar weight 2890 g/mol)

    WGK 2 (obviously hazardous to water)

13. Polymer with adipic acid, N1-(2-aminoethyl)-1,2-ethanediamine, aziridine, 2-(chloromethyl)oxirane and formic acid (average MW 450000 g/mol)

    WGK 2 (obviously hazardous to water)

14. Hexanoic acid, 6,6',6''-(1,3,5-triazine-2,4,6-triyltriimino)tris-, compd. with 2-aminoethanol

    WGK 2 (obviously hazardous to water)

15. Reactions products of 2,5-Furandione, dihydro-, monopolyisobutylene derivs., and N1,N1-dimethyl-1,3-propanediamine, propoxylated (average molar weight 1200 g/mol)

    WGK 1 (slightly hazardous to water)

16. Reaction products with amines, bis(hydrogenated tallow alkyl and polymer with dodecene, maleic anhydride, alkylacrylat C12-14 (average molar weight 1100 g/mol)

    WGK 1 (slightly hazardous to water)

17. Oxirane, 2-methyl-, polymer with oxirane, monoacetate, 2-propen-1-yl ether

    WGK 1 (slightly hazardous to water)

18. Tetradecamethylhexasiloxane

    WGK 1 (slightly hazardous to water)

19. 1,1'-[[3-(Dimethylamino)propyl]imino]bispropan-2-ol

    WGK 1 (slightly hazardous to water)