Registration Dossier
Registration Dossier
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EC number: 215-180-8 | CAS number: 1310-53-8
PBT assessment
Administrative data
PBT assessment: overall result
- PBT status:
- the substance is not PBT / vPvB
- Justification:
The "T" criterion is checked against NOEC data from (standard) long term ecotoxicity tests. Since the lowest NOEC/EC10 observed for the Ge-ion is > 0.01mg/l (i.e. 0.070 mg/l, see section 6.1.), Germanium and Ge-substances 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 Ge-substances to water, the Ge concentration in the water column very rapidly decreases. After 4 weeks, 80% of the Ge is removed from the water column. Based on these observation, the Ge-substances are not to be considered as "equivalent to persistent" in the water column.
Criterion "B" : no data
Based on the considerations above, it is concluded that Germanium and Ge-substances are not PBT.
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