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Classification & Labelling & PBT assessment

PBT assessment

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PBT assessment: overall result

Reference
Name:
Tetrakis [[2,2',2"-nitrilotris[ethanolato]](1-)-N,O]zirconium
Type of composition:
boundary composition of the substance
State / form:
liquid
Reference substance:
Composition 1
PBT status:
the substance is not PBT / vPvB
Justification:

The target substance is hydrolytically unstable with hydrolysis half-life less than 30 minutes. Hydrolysis products include triethanolamine and hydrated zirconium dioxide. Zirconium dioxide is an inorganic substance and consider not relevant for toxicity evaluation. The intrinsic short-, long-term toxicities of the target substance is based on the two organic hydrolysis products.

         The ocatanol-water partition coefficient is -1.59 (log value) for the organic product. The target substance is therefore considered not persistent and no bioaccumulation potential.

         Based on the lowest 72-h EC50 to Desmodesmus subspicatus of 512 mg/l, and no other findings of carcinogenicity, mutagenicity, toxicity to reproduction and long-term toxicity to target organs, the target substance is considered non-toxic.