Table 5 Substances identified as readily biodegradable and persistent in sediment in the preliminary data set but excluded from the final data set and the rationale for quality screen failure
Substance CAS (EC) | Reason for elimination from final data set |
|---|---|
Bis(2-ethylhexyl) phthalate 117-81-7 (204-211-0) | Several sediment degradation studies available but were incorrectly reported as following a standard OECD 308 test guideline. Variable degradation rates reported |
5,5-dimethyl-2,4-imidazolidinedione 77-71-4 (201-051-3) | Two sediment simulation studies available. One is conducted according to a non-standard test guideline, only partially aerobic conditions maintained. More recent OECD 308 study in the publicly available REACH registration dossier reports DegT50 of 23.6d, supporting a conclusion of not Persistent |
Alkanes, C10-13, chloro 85,535-84-8 (287-476-5) | The ready biodegradation test was a modified study. The substances are UVCBs |
Alkanes, C14-17, chloro 85,535-85-9 (287-477-0) | The ready biodegradation test was a modified study. The substance is a UVCB |
Ammonium dodecylbenzene sulphonate 1331-61-9 (215-559-8) | Substance is a UVCB; simulation test was conducted on one constituent while RBT was on the whole UVCB substance |
Benzenesulphonic acid, mono-C10-13-alkyl derivatives 85,480-55-3 (287-335-8) | Substance is a UVCB |
Phenol, 4-nonyl-, branched 84,852-15-3 (284-325-5) | Substance is a UVCB |