On 22 February 2024, 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 substance was newly assigned a WGK:

1. 2-Propenoic acid, 2-methyl-, octadecyl ester, polymer with butyl 2-propenoate, 2-methyloxirane polymer with oxirane mono-2-propen-1-yl ether and 2-propenoic acid (average MW 23000 g/mol)

   WGK 2 (obviously hazardous to water)