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Long-term toxicity to aquatic invertebrates

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Description of key information

The 21-d NOEC(reproduction) in Daphnia magna was determined to be 1.1 mg/L (MoE, 1998) resp. 2.6 mg/L (Springborn, 1995) in two independent studies performed with the structurally related nBMA as read-across substance.

Key value for chemical safety assessment

Additional information

There is no data on the chronic toxicity of tert- BMA available. However, for the structurally related nBMA (CAS: 97-88-1) two 21-d reproduction tests, using Daphnia magna, exist. In one study the 21 d EC50 for Daphnia magna was determined to be 6.59 mg/L, in the second study > 8.4 mg/L.

Both are reporting similar NOECs: 1.1 mg/L (MoE, 1998) and 2.6 mg/L (Springborn, 1995).