Registration Dossier
Registration Dossier
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EC number: 231-442-4 | CAS number: 7553-56-2
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.13 µg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 1.3 µg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 13 ng/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 13 µg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 11 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.489 µg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 48.9 ng/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:
- 0.1 mg/kg soil dw
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
Hazardous to the aquatic environment (acute)
Iodine is subject to harmonised classification (Index number 053-001-00-3) under Regulation 1272/2008 as acute toxicity category 1. This is supported by a 72-h EC50of 0.13 mg/L on algae (Vryenhoef and Mullee, 2010).
Hazardous to the aquatic environment (chronic)
Iodine is a natural ubiquitously present essential trace element. It is highly mobile and cycles through all environmental compartments via a range of mechanisms including disproportionation to different oxidation states by abiotic and biotic mechanisms coupled with binding to organic matrices and biological organisms. These act to significantly mediate the aquatic toxicity when compared to laboratory conditions. Thus, it is not being classified.
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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