Registration Dossier
Registration Dossier
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A mixture of: 4-(2,2,3-trimethylcyclopent-3-en-1-yl)-1-methyl-2-oxabicyclo[2.2.2]octane; 1-(2,2,3-trimethylcyclopent-3-en-1-yl)-5-methyl-6-oxabicyclo[3.2.1]octane; spiro[cyclohex-3-en-1-yl-[(4,5,6,6a-tetrahydro-3,6',6',6'a-tetramethyl)-1,3'(3'aH)-[2H]cyclopenta[b]furan]; spiro[cyclohex-3-en-1-yl-[4,5,6,6a-tetrahydro-4,6',6',6'a-tetramethyl)-1,3'(3'aH)-[2H]cyclopenta[b]]furan]
EC number: 422-040-1 | CAS number: 426218-78-2 CASSIFFIX
Endpoint summary
Administrative data
Description of key information
The PBT working group concluded that the substance is potentially persistent and thus P, based on the results of the OECD TG 309
In a biodegradation screening study (OECD TG 301D) activated sewage sludge from an STP treating predominantly domestic sewage was exposed to the substance for 28 days. In this test 3% biodegradation was observed at day 28. Therefore, the substance is not readily biodegradable.
The summary of the LR: In the water simulation test according to OECD TG 309 ca 40% of Cassiffix volatilised. In the surface water Cassiffix dissipated/degraded and showed T1/2 ranging from 2.9 - 13 days and 10 - 18 days for 20 µg/L and 100 µg/L, respectively. There was one key metabolite, called Cassiffix-Lactone and exceeding the 10% level (present at ca. 14%), which had a log Kow between 2.5 and 3. Based on these results Cassiffix is not persistent.
Additional information
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