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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 aquatic algae and cyanobacteria

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Administrative data

Link to relevant study record(s)

Description of key information

In an algal growth inhibition study with (1-methylethyl)-1,1'-biphenyl, water accommodated fractions were applied. Results based on loadings are high. In a test with the supporting substance 4-ethylbiphenyl, test concentrations have been measured. The results of this test are further used as key values.

Key value for chemical safety assessment

EC50 for freshwater algae:
0.15 mg/L
EC10 or NOEC for freshwater algae:
0.027 mg/L

Additional information

Toxicity of (1-methylethyl)-1,1'-biphenyl to aquatic algae was tested in a 72 h limit test according to OECD TG 201 (Aniol/STZ 2011). A water-accommodated fraction with a nominal load of 100 mg/L was tested. Dissolved test substance concentrations could not be verified. In this test, no inhibition of growth rate was determined (EL50 >100 mg/L, NOELR 100 mg/L).

An aquatic algae toxicity test using the supporting substance 4-ethylbiphenyl could be located (CHRIP/NITE 1999). EC50 and NOEC were determined to be 0.15 mg/L and 0.027 mg/L, respectively. The data from this test are used as key values to characterise the toxicity of (1-methylethyl)-1,1'-biphenyl to aquatic algae.