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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Toxicity to microorganisms

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Administrative data

Link to relevant study record(s)

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

Additional information