Registration Dossier
Registration Dossier
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EC number: 279-087-4 | CAS number: 79135-87-8
PBT assessment
Administrative data
PBT assessment: overall result
- PBT status:
- the substance is not PBT / vPvB
- Justification:
The submission substance is not a PBT / vPvB substance.
PERSISTENCE
The substance is considered as neither readily nor inherently biodegradable in standard tests for biodegradability. Furthermore, abiotic degradation by hydrolysis is excluded estimated to be negligible degradation pathway due to the chemical structure and functional groups presents.
Thus, the substance should be considered as persistent.
On the basis of the available data it is not possible to distinguish and identify the substance as persistent or very persistent.
BIOACCUMULATION
The substance is expected to possess a low potential for bioaccumulation, based on the screening evaluation taken into account the experimental log Pow. Due to the molecular mass greater than 700 and due to the steric hindrance, the possible passage of gill membranes or cell membranes of respiratory organs is expected to be negligible. In addition, the bioaccumulative potential of test item was assessed in Japanese Killifish; the accumulation rate resulted to be lower than ca 0.14 at the concentration level of 2 ppm (corresponding to the actual conc. of 1.7 ppm) and lower than 1.3 at the concentration level of 0.2 ppm.
Thus, B-criterion is not met.
TOXICITY
Aquatic long-term toxicity data is not available, therefore the aquatic toxicity assessment and classification are based mainly on the short-term toxicity data. Short-term toxicity studies show that the substance does not cause adverse effects on aquatic organisms and it does not meet the criteria to be classified hazardous for aquatic life.
In addition, the substance is not classified as carcinogenic (category 1A or 1B), germ cell mutagenic (category 1A or 1B), or toxic for reproduction (category 1A, 1B or 2) according to Regulation (EC) No 1272/2008 and there is no other evidence of chronic toxicity, as identified by the classifications specific target organ toxicity after repeated exposure (STOT RE category 1 or 2) according to Regulation (EC) No 1272/2008.
Although the substance is expected to not meet the criteria to be considered T, a definitive conclusion about the T-criterion cannot be reached.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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