Registration Dossier
Registration Dossier
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EC number: 215-138-9 | CAS number: 1305-78-8
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.37 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.37 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.24 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 0.24 mg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 2.27 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- insufficient hazard data available (further information necessary)
Sediment (marine water)
- Hazard assessment conclusion:
- insufficient hazard data available (further information necessary)
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 817.4 mg/kg soil dw
- Assessment factor:
- 1
- Extrapolation method:
- assessment factor
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
Based on read-across to available data on calcium dihydroxide:
96-h LC50 for fish (Oncorhynchus mykiss) = 50.6 mg/L.
48-h EC50 for invertebrates (daphnia magna) = 49.1 mg/L.
14d-NOEC for marine invertebrates (Crangon septemspinosa) = 32 mg/L
72-h ErC50 for algae (Pseudokirchneriella subcapitata) = 184.57 mg/L, NOEC = 48 mg/L.
On the basis of the acute toxicity data, classification for acute aquatic toxicity is not required. Chronic data are available for both invertebrates and algae. These values are above the classification limits for chronic toxicity, hence classification is not required.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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