Registration Dossier
Registration Dossier
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EC number: 500-295-0 | CAS number: 106233-09-4 1 - 2.5 moles ethoxylated
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Readily biodegradable: 94% (CO2 evolution) in 28 days (OECD 301B)
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
Since no studies investigating the ready biodegradability of alcohols, C16-18, ethoxylated, phosphates (CAS 106233-09-4) are available for this endpoint, in accordance to Regulation (EC) No. 1907/2006 Annex XI, 1.5 a read-across to the structurally related source substance alcohol ethoxylate (C16-18, < 2.5 EO, CAS 68439-49-6) is conducted. This read-across is justified in detail in the overall summary (IUCLID chapter 5) and within the analogue justification in IUCLID Section 13.
The biodegradation of Alcohol ethoxylate (C16-18, < 2.5 EO, CAS 68439-49-6) was investigated in a non-GLP study according to OECD 301B (Häner, 2005). Domestic activated sludge was used as inoculum. The substance attained 94 % degradation after 28 days of contact time and the 10-day window was met. Hence, alcohol ethoxylate (C16-18, < 2.5 EO, CAS 68439-49-6) and alcohols, C16-18, ethoxylated, phosphates (CAS 106233-09-4) can be classified as readily biodegradable under the strict OECD requirements.
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