Registration Dossier
Registration Dossier
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EC number: 500-150-1 | CAS number: 61791-00-2 1 - 2.5 moles ethoxylated
PBT assessment
Administrative data
PBT assessment: overall result
- PBT status:
- the substance is not PBT / vPvB
- Justification:
The PBT Assessment is based on the criteria set out in the “Guidance on information requirements and chemical safety assessment, Chapter R.11: PBT Assessment” (ECHA, 2012).
Persistence (P) Assessment:
A valid screening criterion to evaluate persistence (P) is the potential of a substance for ready biodegradability. The test substance is readily biodegradable. Therefore, it is not expected to be persistent in the environment and it does not meet the Persistent (P) or very Persistent (vP) criteria.
Bioaccumulation (B) Assessment:
The test substance consists of components with log Kow values in the range of xx to > 10 (KOWWIN v1.68) indicating a potential for bioaccumulation. But due to rapid environmental biodegradation, metabolisation via enzymatic hydrolysis (monoesters and diesters) as well as sterical hindrance of crossing biological mebranes (high molecular weight of diesters) a relevant uptake and bioaccumulation in aquatic organisms is not expected. This is supported by low BCF values of < 100 L/kg ww (BCFBAF v3.01, Arnot-Gobas, including biotransformation, upper trophic) calculated for different components of the UVCB (mono- and diester EO1 to EO5). Thus, taking all information into account, the test substance is not considered to be B or vB.
Toxicity (T) Assessment:
Available short-term and long-term toxicity tests with aquatic organisms resulted in effect values > 1 mg/L. In addition, the substance is neither classified as carcinogenic, mutagenic or toxic for reproduction, nor is here evidence of chronic toxicity as identified by the classifications T, R48 or Xn, R48.
Therefore, it is not expected to be toxic and it does not meet the Toxicity (T) criteria.
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