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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 3 hour EC50of Laponite Type 1 to activated sludge respiration inhibition was calculated as greater than 1000mg/l.

Key value for chemical safety assessment

EC50 for microorganisms:
1 000 mg/L

Additional information

The study was conducted according to the test guideline and all data generated for this study are considered to be valid.

The 3 hour EC50of Laponite Type 1 toactivated sludge respirationinhibition was calculated as greater than 1000mg/l.

The results of the abiotic control flask (test without addition of inocula) indicated that there would be no reduction in oxygen concentration in any of the test vessels up to, and including, 1000mg/l Laponite Type 1, attributable to processes in the test system other than those due to the activity of the activated sludge.