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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

With high probability not harmful to aquatic algae and cyanobacteria

Key value for chemical safety assessment

EC50 for freshwater algae:
1 494.5 mg/L
EC10 or NOEC for freshwater algae:
294.3 mg/L

Additional information

A study was performed according to the German industrial test guideline DIN 38412, Part 9 regarding the toxic effect of 3,3'-iminodi(propylamine) (CAS 56 -18 -8) towards the algal species Desmodesmus subspicatus (BASF AG 1989, report no. 01/0499/2/89). The endpoint were recalculated using the program ToxRatPro (v2.10; BASF SE 2011). The study is considered valid. Based on growth rate, the 72h-ErC50 was determined to be 1494.5 mg/L, and the ErC10 was determined to be 294.3 mg/L (nominal; values based on neutralised test solutions).

The concentrations were not analytically verified during the test, but 3,3'-iminodi(propylamine) is expected to be stable in water, as the substance is miscible in water (Gestis database 2012), its vapor pressure is moderate (VP = 1.26 Pa @20°C, BASF AG 1987, report no. 187.0002.1) and its Henry's Law Constant is low (HLC = 5.54 E-08 Pa m³/mol @ 25°C, calculated with HENRYWIN v3.20, not in applicability domain, BASF SE 2017).

In conclusion, the substance is with high probability not harmful to aquatic algae and cyanobacteria.