Registration Dossier
Registration Dossier
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EC number: 216-305-9 | CAS number: 1555-58-4
PBT assessment
Administrative data
PBT assessment: overall result
- Name:
- 3,3'-(methylimino)bispropiononitrile
- Type of composition:
- legal entity composition of the substance
- State / form:
- liquid
- > 99 - < 100 % (w/w)
- Reference substance:
- 3,3'-(methylimino)bispropiononitrile
- Reference substance:
- 3,3'-(methylimino)bispropiononitrile
- This impurity is considered relevant for the classification and labelling of the substance
- PBT status:
- the substance is not PBT / vPvB
- Justification:
The available evidence on degradation is not sufficient for an assessment based on the Annex XIII criteria for persistence (P and vP). As the substance is concluded to be not readily biodegradable (according to OECD criteria), it should be considered as potentially P/vP from a precautionary point of view until further data become available.
However, the substance is not B/vB (log Kow of -0.94).
Chronic toxicity data are not available; however, the acute toxicity data show that the substance is with high probability acutely not harmful to aquatic organisms. The screening criteria for T are not met based on aquatic toxicity data. However, the substance is classified as carcinogenic category 1B due to impurity (acrylonitrile, CAS 107 -13 -1). Therefore, the substance meets the T-criteria.
In conclusion, the substance is not to be considered as a PBT/vPvB substance.
Reference
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