Registration Dossier
Registration Dossier
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EC number: 947-389-1 | CAS number: -
PBT assessment
Administrative data
PBT assessment: overall result
- Name:
- reaction mass of 4-methoxyphenol and 4-methoxy-cyclohexanone and 4-methoxy-cyclohexanol
- Type of composition:
- legal entity composition of the substance
- State / form:
- liquid
- Reference substance:
- reaction mass of 4-methoxyphenol and 4-methoxy-cyclohexanone and 4-methoxy-cyclohexanol
- Reference substance:
- reaction mass of 4-methoxyphenol and 4-methoxy-cyclohexanone and 4-methoxy-cyclohexanol
- Reference substance:
- reaction mass of 4-methoxyphenol and 4-methoxy-cyclohexanone and 4-methoxy-cyclohexanol
- PBT status:
- the substance is not PBT / vPvB
- Justification:
Based on the available information on the biodegradability no final conclusion can be made on the Annex XIII criteria for persistence (P and vP). As indicated by standardized ready biodegradability studies with one of the source substances, Mochon roh is not readily biodegradable. No further data on the degradability are available.
As the target substance is concluded to be not readily biodegradable, the screening criteria for persistence are fulfilled.The substance is assessed to be potentially P/vP.
With regard to the bioaccumulation potential of Mochon roh, it can be stated that its constituents have log Kow values < 4.5. In addition, the estimated BCF values were below the critical level of 2000. Therefore, it can be concluded that Mochon roh is neither B nor vB.
The target substance is assessed to be not acutely hazardous to aquatic organisms, but is chronically hazardous to the aquatic environment (chronic 3). Daphnids proved to be the most sensitive organisms with an acute EC50 value of 3 mg/L and a nog-term NOEC of 0.68 mg/L. The available evidence on toxicity is not sufficient for an assessment based on the Annex XIII criteria for toxicity (T). None of the constituents hold a relevant classification for T substances.
In conclusion, Mochon roh (EC 947-389-9) is assessed to neither fulfill the PBT criteria (not PBT) nor the vPvB criteria (not vPvB).
Reference
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