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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

EC10/ EC50 (3 h) >1000 mg/L for activated sludge microorganisms (OECD 209)

Key value for chemical safety assessment

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The toxicity of 1,2,3-Propanetriol, homopolymer, diisooctadecanoate (CAS 63705-03-3) to activated sludge microorganisms was investigated in an oxygen consumption test according to OECD 209 under GLP conditions (Hammer, 2013). The study was performed with activated sludge as inoculum exposed to five test concentrations (62.5 , 125, 250, 500 and 1000 mg/L). No inhibition of the respiration rate was observed after 3 h in all test concentrations. All test concentrations show an increase of the respiration rate after 3 h (25 – 47% increase). Thus, the EC10/EC50 (3 h) was determined to be > 1000 mg/L.