Registration Dossier
Registration Dossier
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EC number: 269-824-8 | CAS number: 68334-33-8
Endpoint summary
Administrative data
Description of key information
No biodegradation studies with the test substance are available. Therefore, a study with DHTDMAC (CAS 61789-80-8) was used as read across to fulfil the data gap for the test substance. The primary component of all substances provide complete coverage of 68334-33-8. 68334-33-8 shares high structural similarity with 61789-80-8, 68783-78-8, 107-64-2, and 107-64-2. As 68334-33-8 is a UVCB its components encapsulate the other substances except for the counter ion (Cl-). In solution, the counter ions will dissociate from the parent structures. Therefore, we are comparing substances of equivalent nature. CAS 107-64-2 represents the C18 boundary of the 61789-80-8. Ignoring the salt component CAS 61789-80-8 is equivalent to CAS 68334-33-8. 68783-78-8 is a worst case of both 68334-33-8 and 61789-80-8 since it is unsaturated and the SP2 carbon-carbon bonds are of higher reactivity and a more likely site of metabolic activation. The primary component of CAS 112-02-7 is a substructure of all the other substances. Additional documentation, provided within the IUCLID Assessment Reports section, supports the read-across approach.
The test substance was not biodegraded in the closed bottle test after 28 days (3%). However, in the prolonged closed bottle test, the substance is biodegraded 68% at Day 287.
Additional information
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