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Classification & Labelling & PBT assessment

PBT assessment

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PBT assessment: overall result

PBT status:
the substance is not PBT / vPvB
Justification:

On the basis of the currently available information, the substance is expected to be not-PBT.

However, since some tests are still running, the PBT assessment will be confirmed and, eventually, updated as soon as all the the experiments will be finished.

PERSISTENCE

The substance is considered as not readily 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.

BIOACCUMULATION

Many substances with a molecular mass greater than 700 are not readily taken up by fish, because of possible steric hindrance at passage of gill membranes or cell membranes of respiratory organs. Direct Violet 051 has a negative low log Kow and has a molecular weight of ca 720 g/mol, thus it is unlikely to be characterized by a bioaccumulative potential.

TOXICITY

Adequate chronic toxicity data are not available, therefore the aquatic toxicity assessment and classification are based mainly on the short-term toxicity data available. Direct and indirect exposure is unlikely due to the risk management measures that will be applied at industrial level and discussed in details within the exposure scenario to avoid any release of the substance directly in the municipal waste water treatment.

However, since some tests are still running, the PBT assessment will be confirmed and, eventually, updated as soon as all the the experiments will be finished.