Registration Dossier

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

Administrative data

Endpoint:
toxicity to aquatic algae and cyanobacteria
Type of information:
(Q)SAR
Adequacy of study:
weight of evidence
Study period:
2018
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification
Justification for type of information:
QMRF for this informatic tool is not available. However, this informatic tool is widely used and reported in ECHA Practical Guide - How to use and report (Q)SARs, Version 3.1 (July 2016).
Danish (Q)SAR Database, http://qsar.food.dtu.dk.
The Danish (Q)SAR Database includes estimates from more than 200 (Q)SARs from free and commercial platforms and related to physicochemical properties, ecotoxicity, environmental fate, ADME and toxicity. (Q)SAR predictions for more than 600,000 chemical substances can be searched, sorting can be made on chemical similarity, and profiles for individual substances can be downloaded.
The database is developed by the National Food Institute, Technical University of Denmark, with support from the Danish Environmental Protection Agency, the Nordic Council of Ministers and the European Chemicals Agency.

Data source

Reference
Reference Type:
other: QSAR
Title:
Danish (Q)SAR Database
Year:
2018
Bibliographic source:
Danish (Q)SAR Database (http://qsar.food.dtu.dk) automatically generate QSAR report

Materials and methods

Principles of method if other than guideline:
The Danish (Q)SAR Database includes estimates from more than 200 (Q)SARs from free and commercial platforms and related to physicochemical properties, ecotoxicity, environmental fate, ADME and toxicity. (Q)SAR predictions for more than 600,000 chemical substances can be searched, sorting can be made on chemical similarity, and profiles for individual substances can be downloaded.
The database is developed by the National Food Institute, Technical University of Denmark, with support from the Danish Environmental Protection Agency, the Nordic Council of Ministers and the European Chemicals Agency.

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: crystalline
Specific details on test material used for the study:
Substances to be evaluated are deoxycholic acid and its salt sodium deoxycholate. As salts cannot be evaluated by QSAR tools and considering that the Sodium ion is not expected to produce effects, predictions for both substances were made on the non-disassociated form, i.e. deoxycholic acid.
CC(CCC(=O)O)C1CCC2C3CCC4CC(O)CCC4(C)C3CC(O)C12C (deoxycholic acid).

Results and discussion

Effect concentrations
Key result
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
122.975 mg/L
Remarks on result:
other: lowest QSAR result

Any other information on results incl. tables

DK

Exp

Battery

Leadscope

SciQSAR

Pseudokirchneriella s. 72h EC50 (mg/L)

 

152.7094

122.9753

182.4434

Domain

 

IN

IN

IN

Applicant's summary and conclusion

Validity criteria fulfilled:
not applicable
Conclusions:
EC50 Pseudokirchneriella s.: 122.9753 mg/L/72 h.