Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

After re-examination of the substance description and based on the ECHA Guidance for identification and naming of substances under REACH, the lead registrant agreed with the other SIEF members that the identifiers (CAS number and EC name) used for the toxicological, ecotoxicological and physico-chemical testing are not representative of the UVCB substance used for the testing. Consequently, the EC name Bis(2,3-epoxypropyl)cyclohexane-1,2-dicarboxylate and CAS number 5493-45-8, mentioned in the testing reports and refering to a monoconstituent substance are incorrect and should be read as 1,3-Isobenzofurandione, hexahydro-, reaction products with epichlorohydrin with CAS number 1395383-69-3, which is representative of the registered UVCB substance used effectively.

The substance cannot be considered to be readily biodegradable, but appears to show evidence of aerobic degradation that did not plateau before the end of a 60-day study. A Modified OECD Screening test (OECD 301 F, EC C.4-D) demonstrated 53 % degradation after 28 days and 94% after 60 days, indicating a potential for complete mineralisation in the environment. Therefore, the substance can be considered to be inherently biodegradable.

The substance is expected to have a low potential for aquatic / sediment bioaccumulation because it has a low octanol water partition coefficient (log Kow = 1.7).

The adsorption coefficient of the test substance on soil / Sewage sludge is estimated (OECD 121 and EU method C.19) as log Koc of 1.79.

In accordance with column 2 of REACh (Regulation (EC) No 1907/2006) Annex IX, the simulation testing on ultimate degradation in surface water, soil simulation testing, and sediment simulation testing (required in section 9.2.1.2, 9.2.1.3, and 9.2.1.4) do not need to be conducted based on the findings of the Chemical Safety Assessment; the substance does not fulfil classification criteria according to the applicable regulations and does not fulfil the criteria for vPvB or PBT. 

The substance is not expected to persist in the environment.