Registration Dossier
Registration Dossier
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EC number: 939-727-1 | CAS number: -
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 16.2 µg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 7.36 µg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 1.62 µg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 100 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 20.8 mg/kg sediment dw
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 2.08 mg/kg sediment dw
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 2.61 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- PNEC oral
- PNEC value:
- 30.93 mg/kg food
- Assessment factor:
- 300
Additional information
Environmental fate and pathways:
The test substance is readily biodegradable in standard screening test.
Aquatic toxicity:
Acute and chronic data of reliability 1 or 2 (Klimisch rating), based on international guidelines, are available for three trophic levels: Algae, Invertebrates and Fish. Among all data available, the algae Pseudokirchneriella subspicatus seems to be the most sensitive species in acute and chronic exposure with a 72h-ErC50 at 0.736 mg/L and a 72h-ErC10 at 0.162 mg/L. In addition, a valid activated sludge respiration inhibition test is available, showing a 3h-EC10 at 1000 mg/L.
Sediment toxicity:
A chronic sediment toxicity study with reliability 1 is available. The 28-day EC15 and the 28-day EC50 for the development rate of males and females and for the arcsin-transformed emergence rate of pooled sexes are > 1000 mg/kg dry sediment. The overall 28-day NOEC in this sediment spiked study is ≥ 1000 mg/kg dry sediment. The key value for chemical safety assessment is a NOECstandard of 2083 mg/kg dwt, calculated by conversion of NOEC experiment to a standard organic carbon content.
Conclusion on classification
72h-ErC50 algae < 1 mg/L; 0.1 mg/L < 72h-ErC10 algae < 1 mg/L; rapidly degradable substance; log Kow = 5.55.
No existing Harmonised Classification listed in Annex VI to Regulation (EC) N°1272/2008 (CLP), including ATP2 (Reg. (EC) N°286/2011).
Classification according to the Annex VI of the Directive 67/548/EEC: The test substance is classified as R50/53 for the environment.
Classification according to the Annex VI of the Regulation (EC) No 1272/2008 (CLP): According to the 2nd ATP, the test substance is classified as Aquatic Acute 1 and Aquatic Chronic 3 for the environment.
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