Registration Dossier
Registration Dossier
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EC number: 269-929-9 | CAS number: 68391-11-7 The complex combination of polyalkylated pyridines derived from coal tar distillation or as high-boiling distillates approximately above 150°C (302°F) from the reaction of ammonia with acetaldehyde, formaldehyde or paraformaldehyde.
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
According to column 2 of REACH Annex VIII section 9.3.3 testing for adsorption/desorption was waived, as the substance is expected to have a low potential for adsorption based on the low octanol water partition coefficient (logPow = 2.1 at 22 °C). Further, the substance and its relevant degradation products decompose rapidly (inherently biodegradable).
The test method for determination of the adsorption coefficient (Koc) according to EU Method C.19 was replaced by a theory based evaluation. The evaluation was based on 5-ethyl-2-methylpyridine (MEP, CAS no.: 104-90-5, EC no.: 203-250-0). The read-across between the UVCB substance and the model constituent is justified. The resulting Koc was 352.2 and 265.1 and log Koc was 2.55 and 2.42 for MCI method and logKow, respectively.
Key value for chemical safety assessment
- Koc at 20 °C:
- 352.2
Additional information
[LogKoc: 2.55]
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