Registration Dossier
Registration Dossier
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EC number: 242-159-0 | CAS number: 18282-10-5
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.1 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 1 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.01 mg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 100 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Sediment (marine water)
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Tin dioxide is an ubiquitous substance in nature present almost everywhere in the environment. Its water solubility is not measurable (<2.5ug/l, which was the detection limit for tin in the study) and bioaccumulation is not expected nor can be technically determined. Consequently to derive aquatic PNECs results from limit tests (at 100 mg/l) have been applied in combination with standard assessment factors. The same was applied to assess PNEC for sewage treatment plants based on a NOEC of 1000 mg/l derived form a respiratory inhibition test according to OECD 209.
PNECs for sediment (freshwater or marine) and soil can't be derived and are technically not feasible, as water solubility and bioaccumulation can't be estimated for this substance nor is it expected.
PNEC for air cannot be derived ans is technically not feasible, as based on the physico-chemical properties, it is unlikely the substance partition to the air compartment.
Conclusion on classification
The substance tin dioxide is not classifiable for acute nor chronic aquatic toxicity as no toxic effects to aquatic organisms was observed in any of the tests on three thropic levels (fish, daphnia, algae) and in a respiratory inhibition test. Consequently, classification for aquatic toxicity is not required according to DSD (Directive 67/548/EEC) and CLP (Regulation EC No 1272/2008).
Due to the high density of the substance there is no possibility of the substance entering the ozone layer. Therefore it can be concluded that the substance is not hazardous to the ozon layer.
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