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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

The effects of the substance on the bacteria species Pseudomonas putida were investigated by Hüls AG (1993) according to DIN 38412, part 8 (national German guideline). Six concentrations + control were tested over a period of 16 hours. Two tests with and without pH adjustment were performed. 
The EC50 for the test without pH adjustment was determined as 89 mg/L and the EC10 as 72 mg/L indicating that the test substance may be harmful to aquatic microorganisms.
Due to the basic properties of the test substance the concentrations used in the first test were rather low. Another test with higher concentrations and was conducted and the pH of the stock solutions was adjusted to achieve a neutral value. The EC50 was determined as >10 g/L and the EC10 as 1469 mg/L.

Key value for chemical safety assessment

EC50 for microorganisms:
89 mg/L
EC10 or NOEC for microorganisms:
72 mg/L

Additional information