Registration Dossier
Registration Dossier
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EC number: 237-742-1 | CAS number: 13963-58-1
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- no hazard identified
Marine water
- Hazard assessment conclusion:
- no hazard identified
STP
- Hazard assessment conclusion:
- no hazard identified
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 hazard identified
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- insufficient hazard data available (further information necessary)
Additional information
Conclusion on classification
Acute EC/LC50 values of tripotassium hexacyanocobaltate available for three trophic levels of aquatic organisms (fish, crustacea and algae) amount to > 100, > 100 and 87 mg/L respectively. Thus, all acute effect concentrations are well above classification criteria of acute (short-term) hazard to the aquatic environment under Regulation (EC) No 1272/2008.
A long-term (chronic) EC10/NOEC value is with a 72-h EC10 of 33.35 mg/L tripotassium hexacyanocobaltate only available for algae and well above classification criteria of long-term hazard to the aquatic environment under Regulation (EC) No 1272/2008. Based on the surrogate approach (Table 4.1.0 (b) (iii) of Regulation (EC) No 1272/2008), tripotassium hexacyanocobaltate would also not meet chronic classification criteria since acute effect concentrations for fish and crustacea are > 100 mg/L. Criteria for the "Safety net" classification in Category Chronic 4 are also not met. In accordance with Regulation (EC) No 1272/2008, classification for long-term aquatic hazard is not required for tripotassium hexacyanocobaltate.
In sum, tripotassium hexacyanocobaltate does not meet aquatic hazard criteria of Regulation (EC) No 1272/2008 and its subsequent adaptations.
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