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Short-term toxicity to aquatic invertebrates

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Description of key information

With high probability acute not harmful to aquatic invertebrates

Key value for chemical safety assessment

Additional information

For risk assessment of ammonium bicarbonate the total topic of ammonia toxicity was regarded. Species mean acute values (SMAV), as given by U.S. EPA (1999) were considered as relevant endpoints. According to the U.S. EPA (1999) approach, the species mean acute values (SMAV) expressed in terms of total ammonia nitrogen at pH 8 range from 25.78 to 1466.35 mg N/L for aquatic invertebrates. The lowest SMAV at pH 8 was obtained in Ceriodaphnia acanthina: 25.78 mg N/L = 145.6 mg/L Ammonium hydrogencarbonate. The adjusted species mean total ammonium nitrogen acute value for Daphnia magna as presented by U.S. EPA (1999) is 35.76 mg N/L at pH 8 and corresponds to 202 mg/L for ammonium hydrogencarbonate.