Registration Dossier
Registration Dossier
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EC number: 232-465-2 | CAS number: 8047-99-2
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 78 µg/L
- Assessment factor:
- 1 000
- PNEC freshwater (intermittent releases):
- 780 µg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 7.8 µg/L
- Assessment factor:
- 10 000
- PNEC marine water (intermittent releases):
- 78 µg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 6.44 mg/L
- Assessment factor:
- 100
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 1.69 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.169 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:
- 0.292 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential to cause toxic effects if accumulated (in higher organisms) via the food chain
Additional information
Conclusion on classification
Short-term toxicity tests for algae, Daphnia and fish are available for the substance. The EC50 value for Daphnia is > 1000 mg/l, whereas the LC50 for fish is 80 mg/L and the ErC50 for algae is 78 mg/L. Based on the lowest available acute data for algae with an EC50 value of 78 mg/L the substance does not need to be classified for acute aquatic toxicity.
As only one chronic value is available (algae), the aquatic chronic classification needs to be derived on both chronic and acute toxicity data and the most stringent outcome needs to be taken into consideration.
The only chronic available value is the ErC10 of algae being 13 mg/L which does not result in a need for classification for chronic toxicity according to Table 4.1.0, b(i). However, the lowest acute toxicity value of the species is in the range of >10- ≤100 mg/l (algae and fish) and the substance is not readily biodegradable. Therefore, the substance shall be classified as Chronic 3 (Table 4.1.0 b, iii).
Therefore, based on short-term toxicity data, the substance N-ethyl-o (or p) toluenesulphonamide (NETSA) needs to be classified as Category Chronic 3 (H412), according to EU CLP (EC1272/2008 and its updates).
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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