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Toxicity to microorganisms

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Description of key information

The inhibitory effect of the test item Manganese oxalate, dihydrate on the respiration rate of aerobic wastewater micro-organisms of activated sludge was investigated in a 3 hour respiration inhibition test according to the OECD Guideline for Testing of Chemicals, No. 209, adopted 2010.
The biological test results related to Manganese oxalate (correction factor: 1.252 and based on mean measured concentrations) were as follows:
EC 10: 71.9 mg/l
EC20: 182.1 mg/l
EC50: 1083.6 mg/L

Key value for chemical safety assessment

EC50 for microorganisms:
1 083.6 mg/L
EC10 or NOEC for microorganisms:
71.9 mg/L

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