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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

The lowest 48-h LC50 in the fresh water invertebrate Ceriodaphnia dubia is 18340 mg/l. In marine water, the lowest 96-h LC50 is 18800 mg/l in Mysidopsis bahia (new name: Americamysis bahia)

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
18 340 mg/L
EC50/LC50 for marine water invertebrates:
18 800 mg/L

Additional information

There are several guideline studies available for freshwater invertebrates. The most critical study for is therefore chosen as the key study. For freshwater invertebrates the lowest observed effect concentration is a 48-h LC50 value of 18340 mg/l in Ceriodaphnia dubia (Pillard, 1995). In marine water, the lowest 96-h LC50 is 18800 mg/l in Mysidopsis bahia (new name: Americamysis bahia) (ARCO Chemical Company, 1990). Both values will be used in the assessment.