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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

With high probability acutely not harmful to fish.

Key value for chemical safety assessment

Additional information

Sodium 2 -methylpropan-2 -olate hydrolyses in water to form inorganic sodium hydroxide and tert-butanol. For the organic hydrolysis product a toxicity study conducted according to OECD guideline 203 is available (Burlington Research, 1992). In this study a LC50 of > 1000 mg/L (nominal) after 96 hours of exposure was determined. For sodium hydroxide no data are available since the substance completely dissociates in water and effects are related to a shift in pH values only.