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Ecotoxicological information

Toxicity to birds

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Description of key information

Two eight day dietary studies in mallard duck and bobwhite quail are available performed with the monosodium salt of cyanuric acid.

Key value for chemical safety assessment

Short-term EC50 or LC50 for birds:
10 000 mg/kg food

Additional information

Mallard ducks were exposed to 464, 1000, 2150, 4640 and 10000 ppm nominal concentrations for 5 days and then observed for an additional three days. Negative controls were exposed to a basal diet only. Monosodium cyanurate did not cause any symptoms of toxicity or behavioural abnormalities at the dosage levels tested. There was no mortality at any dosage level, with the exception of an incidental death in the 2150 ppm dosage level. In another study bobwhite quail were exposed to 464, 1000, 2150, 4640 and 10000 ppm dietary concentrations of monosodium cyanurate for 5 days and then observed for an additional three days. Negative controls were exposed to a basal diet only. Monosodium cyanurate did not cause symptoms of the toxicity or behavioural abnormalities at the dosage levels tested. There was no mortality at any dosage level.