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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

With high probability acutely not harmful to aquatic algae

Key value for chemical safety assessment

EC50 for freshwater algae:
339 mg/L
EC50 for marine water algae:
240 mg/L
EC10 or NOEC for freshwater algae:
219 mg/L

Additional information

In the key study performed according to German standard DIN 38412, part 9 Scenedesmus subspicatus was exposed to di-isopropanolamine for 72 hours. At termination of the study an ErC50 of 339 mg/l was determined (72 -h ErC10 = 219 mg/L; BASF AG, 1988).

In contrast, an EC50 of 74 mg/l based on the growth rate of Selenastrum capricornutum was determined in a second study after 72 hours (Nagpal, 2003). However, these data are insufficient for the assessment, as no details on test performance are given.  

Furthermore, Eide-Haugmo et al. (2012/2009) performed a guideline study according to ISO 10253 with the marine algae Skeletonema costatum. After 72 hours an ErC50 of 240.0 mg/L was determined.