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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

toxicity to aquatic algae and cyanobacteria
Type of information:
Adequacy of study:
supporting study
2 (reliable with restrictions)
Justification for type of information:
QSAR prediction
other: REACH Guidance on (Q)SAR
Principles of method if other than guideline:
Test organisms (species):
other: Green algae
Test type:
other: (Q)SAR
Water media type:
96 h
Dose descriptor:
Effect conc.:
481 000 mg/L
Dose descriptor:
other: Chronic Value (ChV)
Effect conc.:
246 000 mg/L
Basis for effect:
growth rate
Validity criteria fulfilled:
Phenols: Maximum LogKow: 7.0 (Green Algae EC50) - 8.0 (Chronic Value)
Estimated EC50 : 481.000 mg/L
Estimated Chronic Value : 246.000 mg/L
Intermediate substance is not estimated to be toxic to aquatic algae.

Description of key information

Short-term toxicity:

ECOSAR 1.11: Green Algae: EC50 (96h): 481.000 mg/L


Long-term toxicity:

Indicated results for chronic toxicity are "Chronic values" as obtained from ECOSAR 1.11

ECOSAR 1.11: Green Algae: ChV: 246.000 mg/L

Key value for chemical safety assessment

EC50 for freshwater algae:
481 000 mg/L
EC10 or NOEC for freshwater algae:
246 000 mg/L

Additional information

Intermediate substance is not estimated to be toxic to aquatic algae.