Registration Dossier
Registration Dossier
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EC number: 215-181-3 | CAS number: 1310-58-3
Long-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
Potassium hydroxide is a strong alkaline substance that dissociates completely in water to K+ and OH- (OECD SIDS 2002). Therefore, the only posssible effect would result from the pH effect. However pH will remain between environmentally expected ranges.
Key value for chemical safety assessment
Additional information
No valid long-term toxicity studies to fish are available. Despite of this, there is no need for further testing with KOH, as all available tests with NaOH resulted in a rather small range of toxicity values (chronic toxicity test > or = 25 mg/L) and there are sufficient data on pH ranges that are tolerated by major taxonomic groups (EU RAR, 2007, section 3.2.1.1.4, page 30).
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