Registration Dossier
Registration Dossier
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EC number: 229-319-5 | CAS number: 6471-78-9
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
Low concern for acute toxicity to algae of 5-methoxy-2-methylsulphanilic acid based on predicted data and read-across with similar substance.
Key value for chemical safety assessment
Additional information
There are no studies available for acute toxicity to aquatic algae of 5-methoxy-2-methylsulphanilic acid .
An estimated value of EC50 green algae for 5-methoxy-2-methylsulphanilic acid has been calculated by ECOSAR V.1.11 and it is of none concern (EC50 96 h green algae= 18447.344 mg/l).
To evaluate chronic toxicity to aquatic invertebrates of 5-methoxy-2-methylsulphanilic acid we have analysed the data for compound with similar structure, 4-aminotoluene-3-sulfonic acid. As reported in SIDS Dossier of 4-aminotoluene-3-sulfonic acid approved at SIAM 16 (27 -30 May 2003) with reference to Report No. EDR98002, Environment Agency, Japan (1999): unpublished report EC50 growth inhibition Selenastrum capricornutum 72h for 4-aminotoluene-3-sulfonic acid was more than 10 mg/l. The test was conducted according to OECD TG201.
For justification of read-across see attachment document in section 13.
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