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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

On Daphnia magna a 48-hour LC50 of 2.84 mg/l and a 48-hour NOEC of 0.71 mg/l were (Monsanto 1978) observed.

Key value for chemical safety assessment

Additional information

A hydrolysis half-life time of MBS of ca. 24 h was observed in deionised and environmental water buffered at pH 7.0. Benzothiazole-2-thiole (MBT) and benzothoazole (BT) as hydrolysis products are considered here to support the assessment of MBS. The observed effects are most probably a combined effect of the parent substance and the hydrolysis products.