Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.44 mg/L
Assessment factor:
1 000
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:
10 000
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.