Registration Dossier
Registration Dossier
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EC number: 205-565-9 | CAS number: 142-84-7
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
The substance is not acutely harmful to algae.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 146 mg/L
- EC10 or NOEC for freshwater algae:
- 44.4 mg/L
Additional information
A key study was conducted according to OECD 201 and GLP with dipropylamine (CAS 142-84-7). The test concentrations were analytically verified.The effect values were related to the nominal concentrations. A 72 -h EC50 was determined to be >100 mg/L (BASF, 2022).
In addition, a non-GLP study according to German Industrial Standard DIN 38412, part 9 was conducted by BASF AG (1988), using Desmodemus subspicatus as test organism. Effect values were recalculated (ECT, 2008) according to OECD 201 (adopted 23 Mar 2006) using the fluorescence values for inhibition of biomass from the original reports (BASF AG, 1988). However, the test concentrations were not analytically verified and, therefore, the study does not verify the stability of the test substance in the test solution. Moreover, since no calibration curve data were available, fluorescence data were equated with cell numbers instead of the fluorescence inhibition data. Thus, the result may be not reliable and, therefore, it is not considered for the environmental risk assessment.
In conclusion, dipropylamine is acutely harmful to algae.
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