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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Based on inhibition in growth rate of Pseudokirchneriella subcapitata, the estimated 72 hrs EC50 value by three different model i.e, Battery, Leadscope and SciQSAR used within Danish QSAR database was found to be 1522.986 mg/l.

Key value for chemical safety assessment

EC50 for freshwater algae:
1 522.986 mg/L

Additional information

Estimated 72 hrs EC50 value of test substance Disodium 3-((2,4-dimethyl-5-sulphonatophenyl)azo)-4-hydroxynaphthalene-1-sulphonate on Pseudokirchneriella subcapitata was determined by three different models i.e, Battery, Leadscope and SciQSAR used within Danish QSAR database.

 

Based on inhibition in growth rate of test organismPseudokirchneriellasubcapitata, the estimated 72 hrs EC50 value was found to be1522.986mg/l.