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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Administrative data

Link to relevant study record(s)

Description of key information

Under the conditions of the present test the 72 h  EC50 for growth rate of algea exposed to cyclohexylbenzene is 0.69 mg/l.

Key value for chemical safety assessment

EC50 for freshwater algae:
0.69 mg/L

Additional information

One recent OECD guideline and GLP study on toxicity to aquatic algea is available. The study is in Japanese and thus not all of the details on methodology could be extracted, however the main results and rough description of methodology are presented in tables.The 72 h EC50 for the growth rate of the algea was calculated as 0.69 mg/L, whereby the NOEC settled at 0.11 mg/L.