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EC number: 216-653-1
CAS number: 1634-04-4
Three studies of acute toxicity to earthworms are available: each includes testing exposure by contact with wetted filter paper and exposure via soil. The lowest EC50 value arising from these studies is that reported by Lee, Yoon and An (2015) for Perionyx excavatus in artificial soil (made with 10% peat moss having a 95% organic matter content), and this 72h EC50 is judged suitable for use in assessment.
An earthworm EC50 derived from testing in soil is anyway to be preferred
to one determined based on exposure by filter paper contact.
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