Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
toxicity to aquatic algae and cyanobacteria
Type of information:
calculation (if not (Q)SAR)
Remarks:
Migrated phrase: estimated by calculation
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Scientifically acceptable method

Data source

Reference
Reference Type:
other: model calculation report
Title:
Unnamed
Year:
2012
Report date:
2012

Materials and methods

Test guideline
Qualifier:
no guideline available
Principles of method if other than guideline:
model calculation
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
pure substance

Test organisms

Test organisms (species):
other: Green Algae

Results and discussion

Effect concentrations
Duration:
96 h
Dose descriptor:
EC50
Effect conc.:
55.211 mg/L

Any other information on results incl. tables

The QSAR calculation using ECOSAR v1.00 results in a 96-hr LC50 of 19.786 mg/L for fish and a 48-hr LC50 of 45.456 mg/L for Daphnia. The experimentally derived LC50 values were higher, i.e. 40 mg/L and 241.89 mg/L for fish and Daphnia, repectively (please refer to point 6.1.1 and 6.1.3). Therefore, the comparison of the calculated and experimentally derived enspoints indicate that the EC50 value for Algae derived by QSAR can be considered as a worst-case figure.

Applicant's summary and conclusion