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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint summary

Administrative data

Description of key information

Additional information

The influence of the test item MBTester on aquatic organisms representing three different trophic levels was investigated in three acute studies in accordance with OECD guidelines and GLP principles. The acute toxicity determined was as follows:

Oncorhynchus mykis 96h LC50 = 16 mg/L, Daphnia magna 48h EC50 = 14.7 mg/L, and Desmodesmus subspicatus

72h EC50 = 6.9 mg/L.

In conclusion, the algae Desmodesmus subspicatus was the most sensitive organism tested with a 72h EC50 of 6.9 mg/L.

The inhibitory effects on the respiration of activated sludge was tested, too. With an EC50 of 9.69 mg/L MBTester has

a very low potential to inhibit bacteria.