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EC number: 255-350-9
CAS number: 41395-83-9
Readily biodegradable (82 – 100 % degradation after 28 d) based on
read across from CAS 68583-51-7
There is no study available, in which the biodegradation of
propylene dinonanoate (CAS 41395-83-9) was tested. Therefore,
read-across to the structurally related source substance decanoic acid,
mixed diesters with octanoic acid and propylene glycol (CAS 68583-51-7)
was performed in accordance with Regulation (EC) No 1907/2006 Annex XI,
1.5. The source substance is characterized by similar fatty acid chain
lengths as well as alcohol component and is therefore considered
suitable representative for the assessment of the biodegradability of
the target substance. A detailed read-across justification is provided
in the analogue justification attached in IUCLID section 13.
Three studies are available evaluating the ready biodegradability
of the source substance decanoic acid, mixed diesters with octanoic acid
and propylene glycol (CAS 68583-51-7).
The key study was conducted according to the EU Method C.4-C (GLP)
under aerobic conditions using domestic activated sludge as inoculum. A
mean biodegradation of 82% was observed after 28 d. The substance
reached the pass level biodegradation of > 60% within the 10-day window
and is therefore considered readily biodegradable.
This result is supported by two GLP-Guideline studies with the
same source substance decanoic acid, mixed diesters with octanoic acid
and propylene glycol according to OECD 301B using secondary effluent
from an activated-sludge plant as inoculum. A mean biodegradation of
104.5 and 107.6%, respectively, and the fulfilment of the 10-day window
criterion classify the source substance as readily biodegradable.
On the basis of the read across data, the target substance
propylene dinonanoate (CAS 41395-83-9) is considered readily
[Type of water: freshwater]
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