Registration Dossier
Registration Dossier
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EC number: 231-180-0 | CAS number: 7440-74-6
PBT assessment
Administrative data
PBT assessment: overall result
- PBT status:
- the substance is not PBT / vPvB
- Justification:
For indium metal powder, specifically, the "T" criterion is checked against the chronic NOEC obtained on In metal powder in (standard) long term ecotoxicity tests. Since the lowest NOEC/EC10 observed for In metal is >>> 0.01mg/l (i.e. 100mg In/L, see section 6.1.), In metal is not to be considered "T" under PBT assessment (guidance R7.b.).
For Indium substances in general, the "T" criterion is checked against NOEC data from (standard) long term ecotoxicity tests on other In compounds, notably, the soluble ones. Since the lowest NOEC/EC10 observed in this dataset is > 0.01mg/l (i.e. 94 µg/l, see section 6.1.), In metal and In substances in general are not to be considered "T" under PBT assessment (guidance R7.b.).
The "P" criterion is not applicable to inorganic substances as such. Experimental data (transformation/dissolution, see section 4.8) demonstrate that upon addition of In-metal and other In-substances to water, the In concentration in the water column very rapidly (within 24 hrs) decreases to "<DL" concentrations. As such, the In-substances are surely not to be considered as "persistent" in the water column.
Criterion "B" : no data
Based on the considerations above, it is concluded that Indium metal (and Indium substances) are not PBT.
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