Registration Dossier
Registration Dossier
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EC number: 242-555-3 | CAS number: 18755-43-6
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.088 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.884 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.009 mg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 100 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.489 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.049 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:
- 0.046 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
Dimethyl propylphosphonate is not legally classified.
Dimethyl propylphosphonate is not classified as dangerous or harmful to the environment. The following data has to be considered for classification:
- acute toxicity to aquatic organisms: No effect values could be determined due to a lack of toxicity within the range tested.
- short-term toxicity testing to fish: LC0(96h): >= 99.1 mg/L
- short-term toxicity to aquatic invertebrates: EC0(48h): >= 90 mg/L
- growth inhibition study to aquatic plants: NOEC(72h): >= 88.4 mg/L
- biodegradability: Dimethyl propylphosphonate is not readily biodegradable with 5% biodegradation after 28 days.
Further the substance is not poorly soluble in water and due to a low Log Kow (0.5) there is no significant potential for bioaccumulation in aquatic organisms.
The data listed above shows that a classification of dimethyl propylphosphonate in the environment is not justified.
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