Registration Dossier
Registration Dossier
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EC number: 238-969-9 | CAS number: 14901-07-6
Endpoint summary
Administrative data
Description of key information
Additional information
Biodegradation in water :
4-(2,6,6-trimethylcyclohex-1-ene-1-yl)-but-3-ene-2-one is 50% biodegradable in water in 38 days (half-life) indicating 4-(2,6,6-trimethylcyclohex-1-ene-1-yl)-but-3-ene-2-one is readily biodegradable in water.
Biodegradation in water and sediment :
Half life period of 4-(2,6,6-trimethylcyclohex-1-ene-1-yl)-but-3-ene-2-one in water observed 912 hrs (38 days). (half-life) while in sediment it is 8160 hrs (340 days).Based on these half life values of 4-(2,6,6-trimethylcyclohex-1-ene-1-yl)-but-3-ene-2-one, it is concluded that the chemical is readily biodegradable in water where as it is non biodegradable in sediment. Since there is low level of diffusion of the substance in the sediment as evident from the reported data (2% in sediment) hence persistence in the sediment compartment is not likely to be critical.
Biodegradation in soil :
The PBT & EPI Suite has estimated that 4-(2,6,6-trimethylcyclohex-1-ene-1-yl)-but-3-ene-2-one is expected to be found predominantly in soil and its persistence estimate is based on its availability in this medium. Half-life of 4-(2,6,6-trimethylcyclohex-1-ene-1-yl)-but-3-ene-2-one in soil was estimated to be 1800 hrs i.e. 75 days. This value exceeds the threshold of >= 2 months (and <= 6 months). Therefore, 4-(2,6,6-trimethylcyclohex-1-ene-1-yl)-but-3-ene-2-one is estimated to be persistent in the soil environment.
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