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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

A weight of evidence has been used to conclude on the short term toxicity to algae.

From experimental data and a QSAR prediction, the moste conservative value has been selected.

This is the predicted 96h Algae QSAR : EC 50= 11.1mg/l.

Key value for chemical safety assessment

EC50 for freshwater algae:
11.1 mg/L
EC10 or NOEC for freshwater algae:
2.7 mg/L

Additional information

Two long-term tests were reported in the RAR (2008).

NOEC-values of 2.7 and 31 mg/l were reported for blue-green and green algae, respectively.

The algae test results are based on 8-day tests which are not fully equivalent to algae growth inhibition data from standard tests measuring the impact on exponentially growing algae and not comparable to current guideling duration (72h) .

Reference to a study on furfural has been found in a screening document by Environment Canada (Sept 2011). A study on green alga (Pseudokirchneriella subcapitata) for 96h shows an EC50 of 29 mg/L. This value is very much in line with the QSAR prediction of 11.1 mg/L, further supporting the use of the QSAR.