Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

1) Key_Bioaccumulation aquatic / sediment:

2) Waiver_Bioaccumulation: aquatic / sediment: According to REACH Regulation (EC) No 1907/2006 Article 2 (9), polymers are excluded from Titles II (Registration) and VI (Evaluation).

Additional information

Bioaccumulation: aquatic / sediment

Due to the very fast hydrolysis (DT50 = 37s) and the resulting instability of the test substance, it was considered most meaningful to cover the information on the bioaccumulative potential by the consideration of the degradation products. Based on the results of the hydrolysis study conducted at CURRENTA GmbH according to OECD 111, 2,4,6-triisopropyl-m-phenylene diamine (TRIDA, CAS 6318-09-08) was expected as major hydrolysis and polymeric ureas as potential minor hydrolysis products (Neuland, 2020).

A study with 2,4,6-triisopropyl-m-phenylene diamine (TRIDA) according to OECD TG 305-I (Aqueous Exposure) is currently running at ibacon GmbH, which is presented as key study. Therefore, no final results on the bioaccumulative potential of TRIDA as major hydrolysis product can be presented so far but will be added as soon as the final report is available.

Polymeric ureas are considered as polymers under REACH. Therefore they do not have to be registered and evaluated according to Chapter 1; Article 2, Paragraph 9 Regulation No. 1907/2006. Regardless of the evaluation of available data, the determination of the bioaccumulative potential of the polymeric ureas as minor hydrolysis product is waived accordingly.

Bioaccumulation: terrestrial

This is no mandatory endpoint to be fulfilled for a registration of a tonnage band of 100 - 1000 tons/year according to REACH Regulation (EC) 1907/2006.