Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Methanol: EC50: 20300 - 43290 mg/L

                 TGK: 8000 mg/L

Key value for chemical safety assessment

EC50 for freshwater algae:
22 000 mg/L

Additional information

The toxicity threshold of methanol for the alga Scenedesmus quadricauda after an exposure of 8 days was reported to be at 8000 mg/L (Bringmann and Kuehn, 1978). EC50 reported by Stratton (1987) with different test species of blue-green algae range between 20300 - 43290 mg/L. The average concentration causing 50% inhibition in growth rate was found to be at 28400 mg/L during an exposure period of 10 – 14 days (Stratton and Smith, 1988). Cho et al. (2008) in a 96h test period report a concentration causing 50% inhibition in growth rate of 22000 mg/L for the green algae Selenastrum capricornutum in a 96h well documented test conducted according to OECD 201 Guideline.