Registration Dossier
Registration Dossier
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EC number: 231-887-4 | CAS number: 7775-09-9
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 1 mg/L
- Assessment factor:
- 10
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 1 mg/L
- Assessment factor:
- 10
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 100 mg/L
- Assessment factor:
- 10
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 3.6 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 3.6 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 3.33 mg/kg soil dw
- Assessment factor:
- 100
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- PNEC oral
- PNEC value:
- 0.01 g/kg food
- Assessment factor:
- 30
Additional information
Conclusion on classification
The harmonised classification of the substance is Aquatic Chronic 2 according to Annex VI of Regulation (EC) No 1272/2008 (CLP Regulation, ATP01).
This harmonised classification is not in agreement with the data presented in the dossier as the substance should not be classified instead of Aquatic Chronic 2 based on data from the dossier.
- The substance is not readily biodegradable,
- The lowest acute EC50 value is higher than 1 mg/L (EC50= 129 mg/L, algae)
- The lowest chronic EC10/NOEC value is comprised between 1 and 10 mg/L (7d-NOErC = 10 mg/L, aquatic plants:Lemna minor, section 6.1.6)
A declassification dossier for aquatic chronic 2 for sodium chlorate has been submitted under the registry of CLH intentions to ECHA by Sweden in 2019: https://echa.europa.eu/fr/registry-of-clh-intentions-until-outcome/-/dislist/details/0b0236e183552bed
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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