On 1 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 substances were newly assigned a WGK:

1. 2-(Methoxymethyl)-1-methyl-3-nitrobenzene

   WGK 2 (obviously hazardous to water)

2. Hydrocarbons, C9-C11, n-alkanes, isoalkanes, cyclics, <2% aromatics

   WGK 1 (slightly hazardous to water)