Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Due to the indoor use of the 2-pyrrolidone-based products, there are no direct emissions of 2-pyrrolidone to surface water and sediment. However, a conceivable route of indirect intake is the release of waste-water treatment plant-effluents containing potential 2-pyrrolidone residues into surface water bodies (water and sediment). Hence, surface water and sediment can be assessed for the environmental risk and PEC values are calculated to cover the effects of potential 2-pyrrolidone residues in effluents of sewage treatment plants (STPs). The environmental compartments surface water, sediment and air are considered as relevant for environmental emissions of 2-pyrrolidone caused by industrial use of this compound. The soil is not a compartment for direct emissions due to the intended uses of products containing 2-pyrrolidone. Soils do also not represent a relevant sink for indirect emissions of the compound. Furthermore, adsorption of 2-pyrrolidone to solid phase of soil is negligible.

Using the Bond Method of the computer program HENRYWIN from US-EPA a Henry´s Law Constant of 1.46 E-003 Pa*m3*mol-1 was calculated from the active substance 2-pyrrolidone at 25 °C.

In a QSAR calculation (Mackay Level III fugaicity implemented in EPIWIN 4.1) the following key result was obtained: 2 -pyrrolidone will preferentially distribute into the compartments soil (68%) and water (32%). It will be found in minor amounts in air and sediment (0.023 % and 0.069 %).