Registration Dossier
Registration Dossier
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EC number: 216-133-4 | CAS number: 1506-02-1
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 2.2 µg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 6.1 µg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.22 µg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 2.2 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 1.72 mg/kg sediment dw
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.345 mg/kg sediment dw
- Assessment factor:
- 50
- 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:
- 0.01 mg/kg soil dw
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- PNEC oral
- PNEC value:
- 1.1 mg/kg food
- Assessment factor:
- 90
Additional information
Conclusion on classification
Lowest values for short-term toxicity data per taxon:
Species |
Result (mg/l) |
Algae: Pseudokirchneriella subcapitata |
72h-ECr50 > 0.835 |
Invertebrates: Nitocra spinipes |
96h-LC50 = 0.61 |
Fish: Lepomis macrochirus |
4d-LC50 = 1.49 |
AHTN has log Kow 5.4 and is not readily biodegradable. Acute toxicity studies are available for the three trophic levels. The lowest value is 0.61 mg/l. Therefore, AHTN is classified for its acute (short-term) Aquatic Hazard Category Acute 1, M-factor: 1 in accordance with CLP Regulation (EC) No 1271/2008.
Lowest values for long-term toxicity data per taxon:
Species |
Result (mg/l) |
Algae: Pseudokirchneriella subcapitata |
72h-ECr50 > 0.835 72h-NOECr = 0.40 |
Invertebrates |
|
Acartia tonsa (marine) |
6d-EC10(larval dev. ratio) = 0.028, NOEC = 0.022 |
Daphnia magna |
21d-NOECrepr = 0.196 |
Fish |
|
Pimephales promelas |
36d-NOEC = 0.035 |
Brachydanio rerio |
34d-NOEC = 0.035 |
AHTN is classified for its chronic toxicity based on the lowest NOEC of 0.022 mg/l as Aquatic Hazard Category Chronic 1 with M-factor 1 (0.01 < NOEC ≤ 0.1 mg/l and not readily biodegradable in accordance with CLP Regulation (EC) No 1271/2008.
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