Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

In an acute toxicity test with zebrafish, the LC50 (96 h)of 4,4'Difluorbenzophenon based on nominal concentration was > 100 mg/L and based on measured concentrations > 6.5 mg/L and is thus above the solubility limit of the test substance under the conditions of this test.

In two acute toxicity studies with Daphnia magna, the EC50 (48 h), based on measured concentrations, was determined. The geometric mean determined thereof is 5.68 mg/L indicating that the test substance may be toxic to aquatic invertebrates.

In two growth inhibition tests with Desmodemus subspicatus, the ErC50 values (72), based on measured concentrations, were determined as 1.92 mg/L and 2.4 mg/L indicating that the test substance may be toxic to algae. The geometric mean of the two available ErC50 values was determined as 2.147 mg/L.