Registration Dossier
Registration Dossier
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EC number: 911-295-9 | CAS number: -
PBT assessment
Administrative data
PBT assessment: overall result
- Name:
- Reaction mass of Decyl acrylate and Octyl acrylate
- Type of composition:
- boundary composition of the substance
- State / form:
- liquid
- Reference substance:
- Reaction mass of Decyl acrylate and Octyl acrylate
- Reference substance:
- Reaction mass of Decyl acrylate and Octyl acrylate
- PBT status:
- the substance is not PBT / vPvB
- Justification:
The biodegradability of the test item was assessed in a manometric respirometry experiment in accordance with the OECD Test Guideline 301F. In this study, the test item Reaction mass of decyl acrylate and octyl acrylate was not considered to be readily biodegradable under the test conditions. A mean total of 49.3% degradation was achieved by Day 28 and 53.1% by day 56. The results of this screening test does not allow an exclusion of the P criterion.
In a study according to the OECD Test Guideline 117, the two major components of the test substance were found to have log Kow values of 4.83 and 5.89. The results of this partition coefficient test does not allow an exclusion of the B criterion.
On the other hand, it has been demonstrated that the product is hydrolysable at the tested pH values (1.2, 4, 7, 9), with more than 10% hydrolysis after 5 days at each of those pH values. The half-life results obtained ranged from 0.65 days (pH = 9) to 12.8 days (pH = 4), indicating that Reaction mass of Decylacrylate and Octylacrylate hydrolyses at a rapid pace, resulting in acrylic acid (CAS No. 79-10-7) and corresponding C8 and C10 alcohols (Octan-1 -ol, CAS No. 111-87-5, and Decan-1-ol, CAS No. 112-30-1), based on the hydrolysable ester functional groups present within the parent substance.
According to the REACH registration dossiers of the three degradation products mentioned, acrylic acid, octan-1-ol and decan-1-ol are not considered as PBT or vPvB, with both acrylic acid and octan-1-ol not meeting the P criterion as they are readily biodegradable. Therefore, there is sufficient evidence to conclude that Reaction mass of Decylacrylate and Octylacrylate does not meet PBT or vPvB criteria.
Reference
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