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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

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
169 mg/L

Additional information

For risk assessment of ammonium sulphate 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 = 121.7 mg/L Ammonium sulphate. The adjusted species mean total ammonium nitrogen acute value for Daphnia magna is 35.76 mg N/L at pH 8 and corresponds to 169 mg/L for ammonium sulphate.