Registration Dossier
Registration Dossier
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EC number: 262-553-6 | CAS number: 60996-20-5
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 10 µg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 100 µg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 1 µg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 0.75 mg/L
- Assessment factor:
- 100
Sediment (freshwater)
- Hazard assessment conclusion:
- no hazard identified
Sediment (marine water)
- Hazard assessment conclusion:
- no hazard identified
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- no exposure of soil expected
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
For inorganic compounds, biotic degradation in the environment is an irrelevant process but abiotic dissociation and subsequent interactions occur instead. Nonetheless, for classification purposes, inorganic substances are to be considered as non-rapidly degradable. Aquatic toxicity data for three trophic levels (fish, invertebrates and alga) are available for potassium cryolite. From these data a critical effect value for classification of >10 mg/L was derived (Fish 96h-LC50). No long-term aquatic toxicity tests are available. No information on sediment toxicity and terrestrial toxicity is available. According to Regulation (EC) No. 1272/2008 for the Classification, Labelling and Packaging of Substances and Mixtures (CLP), potassium cryolite is to be classified as harmful to the aquatic environment, Category Chronic 3; H412 (Harmful to aquatic life with long lasting effects).
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