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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 18-h EC10 of 397 mg/L for Pseudomonas putida is used in the assessment.

Key value for chemical safety assessment

EC50 for microorganisms:
4 974 mg/L
EC10 or NOEC for microorganisms:

Additional information

A GLP compliant growth inhibition study is available for tetrafluoroboric acid. Pseudomonas putida was exposed to eleven test concentrations of tetrafluoroboric acid in a preliminary study without pH correction (1.25 to 1,285 mg/L) and in a study in which the pH was corrected to 7.4 (64.5 to 66,000 mg/L) for a period of 18 ± 2 hours under static conditions. Three replicates were considered at each of the test concentrations, for the control ten replicates were used. The growth inhibition was measured as turbidity. The 18-h EC50 and EC10 values were 6.4 and 61.3 mg/L without pH adjustment en 397 and 4974 mg/l at pH 7.4 (all values are based on nominal concentrations). The 18-h EC10 value of 397 mg/L at pH 7.4 is used in the assessment.