Registration Dossier
Registration Dossier
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EC number: 635-156-4 | CAS number: 109293-98-3
Toxicity to other above-ground organisms
Administrative data
Link to relevant study record(s)
Description of key information
A study assessing the acute contact toxicity of the test substance (diflufenzopyr sodium salt) with henoey bees (apis mellifera) was conducted. The 48-hour LD50 value was empirically estimated to be greater than 25 µg A.E./bee. The No-Observed-Effect Concentration (NOEC) was determined to be 25 µg A.E./bee.
Key value for chemical safety assessment
Additional information
The study assessing the acute contact toxicity of the test substance (diflufenzopyr sodium salt) with henoey bees (apis mellifera) was performed in accordance with FIFRA Guideline 141 -1. The test test (48 h duration) was conducted in total darkness, relative humidity generally ranging from 82 to 88 percent. The temperature was in the range of 29 to 32 °C. The 48-hour LD50 value was empirically estimated to be greater than 25 µg A.E./bee. The No-Observed-Effect Concentration (NOEC) was determined to be 25 µg A.E./bee. Based on these results and criteria established by the U.S. EPA (1985), the test substance (diflufenzopyr sodium salt) is classified as being practically non-toxic to Apis mellifera.
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