Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Bioaccumulation: aquatic / sediment

From BCFBAF (v3.00) model of EPI suite Program, the estimated bio concentration factor (BCF) for 1,1-diethoxy-3,7-dimethylocta-2,6-diene is 699.3 L/kg whole body w.w which does not exceed the bio concentration threshold of 2000. Thus it is concluded that 1,1-diethoxy-3,7-dimethylocta-2,6-diene is not expected to bioaccumulate in the food chain.

Additional information

Bioaccumulation: aquatic / sediment

Four results including different predicted data from validated models for bioaccumulation (BCF) endpoint of target chemical 1,1-diethoxy-3,7-dimethylocta-2,6-diene (Cas no. 7492-66-2) were summarized as follows:

 

First prediction done using BCFBAF (v3.00) model indicate the estimated bio concentration factor (BCF) for 1,1-diethoxy-3,7-dimethylocta-2,6-diene is 699.3 L/kg wet-wt which does not exceed the bioconcentration threshold of 2000. Thus it is concluded that 1,1-diethoxy-3,7-dimethylocta-2,6-diene is not expected to bio accumulate in the aquatic environment.

 

From PBT profiler predicted database the Bioaccumulation factor (BCF) for test substance 1,1-diethoxy-3,7-dimethylocta-2,6-diene was estimated to be 700 L/kg wet-wt at 25 deg.C. Based on the BCF concentration it is concluded that the test chemical 1,1-diethoxy-3,7-dimethylocta-2,6-diene is non bioaccumulative in nature as it does not exceed the BCF criteria of 2000. 

Above all prediction assist by result from CompTox Chemistry Dashboard using OPERA (OPEn (quantitative) structure-activity Relationship Application)  V1.02 model in which calculation based on PaDEL descriptors (calculate molecular descriptors and fingerprints of chemical) indicate  the bioaccumulation i.e BCF for test substance 1,1-diethoxy-3,7-dimethylocta-2,6-diene was estimated to be 845 dimensionless . The predicted BCF result based on the 5 OECD principles. Thus based on the result it is concluded that the test substance 1,1-diethoxy-3,7-dimethylocta-2,6-diene non-bioaccumulative in nature as it does not exceed the BCF criteria of 2000.

Also from U.S. Environmental Protection Agency,Hazard Characterization Document, September 2009 the Bioconcentration (BCF) factor of test chemical Citral diethyl acetal  (Cas no.7492-66-2) i.e 1,1-diethoxy-3,7-dimethylocta-2,6-diene  was reported to be 1020 (Dimensionless).This BCF value suggest that the chemical non bioaccumulative in aquatic environment as it does not exceed the threshold of 2000.

 

Thus based on the above information for bioaccumulation endpoint, it can be concluded that the test substance 1,1-diethoxy-3,7-dimethylocta-2,6-diene (Cas no. 7492-66-2) is expected to be non Bioaccumulative in aquatic environment as none of the study indicate the 1,1-diethoxy-3,7-dimethylocta-2,6-diene exceed the BCF threshold of 2000.