Registration Dossier
Registration Dossier
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EC number: 231-132-9 | CAS number: 7440-23-5
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Marine water
- Hazard assessment conclusion:
- no data available: testing technically not feasible
STP
- Hazard assessment conclusion:
- no data available: testing technically not feasible
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 data available: testing technically not feasible
Additional information
In the present case, sodium is quasi-instantaneously degraded in contact with water/moisture according to the following reaction:
Na + H20 -> NaOH + ½ H2
Considering the high reactivity with water of the parent substance (half life of Na < 1 hour), the sodium can be considered as a hydrolytically unstable substance justifying a non-testing decision for the evaluation of its toxicity to aquatic and terrestrial organisms.
The environmental risk assessment is to be performed using the toxicity data of sodium degradation product (NaOH) which is considered in its relative registration dossier. Considering the nature of the degradation product, sufficient data related to ecotoxicological properties are generated for this substance (European RAR available). The results of the chemical safety assessment clearly indicates that there is no need to investigate further the effects of the substance and/or the relevant degradation products.
Conclusion on classification
No environmental classification is proposed
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