Registration Dossier
Registration Dossier
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EC number: 939-350-2 | CAS number: 85409-22-9
Endpoint summary
Administrative data
Description of key information
To evaluate the biodegradability of C12 -14 ADBAC read-across from quaternary ammonium compounds, benzyl-C12 -C16-alkyldimethyl, chlorides (CAS 68424-85-1) was used.
According to the requirements of the regulation (EC) No 1907/2006 the biodegradability of quaternary ammonium compounds, benzyl-C12 -C16-alkyldimethyl, chlorides (CAS 68424-85-1) was tested according to the OECD test guideline 301 A (Hirschen et al. 1997), and 301 B (Corby 1992, Bfb Oil Research 2004). The mean degradation rates of the test substance ranged between 82.6 to 95.5% after 28 days. Therefore, the test substance is readily biodegradable. Based on the read-across approach, the same is expected for C12-14 ADBAC.
Furthermore, primary removability of quaternary ammonium compounds, benzyl-C12 -C16-alkyldimethyl, chlorides (CAS 68424-85-1) in an aerobic simulation study similar to OECD 303 A was investigated by Corby (1992). Based on this information, C12 -14 ADBAC is expected to be fully removed during the sewage treatment.
The adsorption/desorption behaviour of C12 -16 ADBAC was tested according to U.S. EPA Guideline subdivision N 163-1, and in compliance with GLP (Daly 1988). The test substance adsorbs onto soil and does not desorb easily for the four soil types used, therefore it can be considered immobile and should not pose a probable environmental risk for contamination of ground water. No apparent degradation of the test substance occurred in any of the four soils. The same is expected for C12-14 ADBAC.
Additional information
This information is used in a read-across approach in the assessment of the target substance. For details and justification of read-across please refer to the attached report in section 13 of IUCLID.
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