Registration Dossier
Registration Dossier
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EC number: 200-261-2 | CAS number: 56-18-8
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
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.
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