Registration Dossier
Registration Dossier
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EC number: 203-055-0 | CAS number: 102-79-4
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.44 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 1 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.044 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 7.27 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 2.024 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.202 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:
- 0.146 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Only low (short-term) toxicity to aquatic organisms was observed for the compound Butyldiethanolamine. Toxic effects observed in the short-term fish test at a concentration of 464 mg/L were rather based on the pH value. Effects in the pH adjusted vessel at 464 mg/L were not observed. With regard to the acute invertebrate test, no toxic effects at all were observed. Referring to the long-term toxicity tests, Daphnia magna with NOEC (21 d) = 4.4 mg/L (based on reproduction) seems to more susceptible than the green algae Pseudokirchneriella subcapitata with a NOErC (72 h) of 25 mg/L.
Conclusion on classification
Regarding all available data of the acute toxicity tests on aquatic organisms and taking into account the provisions laid down in Council Directive 67/548/EEC and CLP Regulation (EC) No. 1272/2008, the substance does not need to be classified for the environment.
Aquatic long-term data are available for two trophic levels (invertebrates, algae). The most sensitive toxicity data was determined for Daphnia magna (NOEC (21 d) = 4.4 mg/L; OECD 211) which does not trigger an environmental classification in terms of chronic effects. Referring to the short-term data, effect concentrations are well above the trigger value of 1 mg/L for acute toxicity. Thus, an environmental classification is neither triggered by short-term nor by long-term toxicity data.
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