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Ecotoxicological information

Long-term toxicity to aquatic invertebrates

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Description of key information

A NOEC of 0.79 mg/L was identified in a long-term study in Daphnia magna.

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
0.79 mg/L

Additional information

Reinbold & Pescitelli (1990) investigated the long-term effects of ammonium chloride exposure to Daphnia magna. Survival was slightly less at the two highest test concentrations (73%) than at the other treatments (86-100%) but were not significantly different from the control. Daphnid growth (determined by length) was significantly reduced at the higher test concentration of 1.3 mg/L NH3. Mean length for the control and the high concentration were 3.52 and 3.02 mm respectively. Reproduction was also affected. The first young were produced on day 7 of the test in all treatments except the highest concentration, where no young were found until day 9. The average number of young/adult was significantly lower at that concentration-6.4 versus 24.6 in the control.