Registration Dossier
Registration Dossier
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EC number: 200-890-2 | CAS number: 75-66-1
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
The growth rate EC50 of 2-methylpropane-2-thiol was 24 mg/l and the NOEC was 6.41 mg/l. The biomass EC50 was 13 mg/l and the NOEC was <6.41 mg/l.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 24 mg/L
- EC10 or NOEC for freshwater algae:
- 6.41 mg/L
Additional information
Thiebaud (1999) is a GLP compliant proprietary study, which follows the OECD guideline 201. Concentrations were not maintained within 80% of the initial concentrations so a geometric mean was used as according to OECD 201, calculated from the initial and final concentrations. This study is considered reliable and suitable for use as a key study for this endpoint.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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