Registration Dossier
Registration Dossier
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EC number: 421-450-8 | CAS number: 154702-15-5
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.002 mg/L
- Assessment factor:
- 1 000
- PNEC freshwater (intermittent releases):
- 0.019 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0 mg/L
- Assessment factor:
- 10 000
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 10 mg/L
- Assessment factor:
- 100
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 17.5 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 1.75 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:
- 14.2 mg/kg soil dw
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- PNEC oral
- PNEC value:
- 16.7 mg/kg food
- Assessment factor:
- 300
Additional information
PNEC values were calculated on the basis of the observation and effects seen in the three eco-toxicology studies where the water solubility values were analytically determined. Those water solubility values differ, in some cases, from that determined in the water solubility test of a 10 fold. Hence this approach is going to over-estimate the environmental distribution in the water compartment. Additional QSAR modeling with ECOSAR confirms that the substance will not result in chronic toxicity at the limits of water solubility.
As already discussed chemicals of concern regarding the secondary poisoning include lipophilic organic chemical and some metal compounds. Secondary poisoning is concerned with toxic effect in the higher members of the food chain (living in aquatic or terrestrial compartments) which result from ingestion of organisms from lower trophic levels that contain accumulated substances. The substance is not expected to be highly lipophilic and it is not considered bioaccumulative for purposes of CLP classification. Its calculated PNEC oral for secondary poisoning is considered high enough and not leading to any risk.
Conclusion on classification
The substance does not cause toxicity at the limits of water solubility and therefore is not classified as harmful to the environment for CLP regulation purposes.
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