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EC number: 228-937-2 | CAS number: 6375-46-8
Endpoint summary
Administrative data
Description of key information
Bioaccumulation: aquatic/sediment
BCFBAF model (v3.01) of Estimation Programs Interface (EPI Suite, 2017) was used to predict the bioconcentration factor (BCF) of test chemical N-[3-(diethylamino)phenyl]acetamide (CAS No. 6375 -46 -8). The bioconcentration factor (BCF) of N-[3-(diethylamino)phenyl]acetamide was estimated to be 14.38 L/kg whole body w.w (at 25 deg C) which does not exceed the bioconcentration threshold of 2000, indicating that the chemical N-[3-(diethylamino)phenyl]acetamide is not expected to bioaccumulate in the food chain.
Additional information
Bioaccumulation: aquatic/sediment
Various predicted data for the target compound N-[3-(diethylamino)phenyl]acetamide (CAS No. 6375-46-8) and supporting weight of evidence studies for its read across substance were reviewed for the bioaccumulation end point which are summarized as below:
In a prediction done using the BCFBAF Program(v3.01) of Estimation Programs Interface (EPI Suite, 2017) the bioconcentration factor (BCF) of N-[3-(diethylamino)phenyl]acetamide was estimated to be 14.38 L/kg whole body w.w (at 25 deg C).
In an another prediction done by using Bio-concentration Factor (v12.1.0.50374) moduleACD (Advanced Chemistry Development)/I-Lab predictive module, 2017), the BCFover the entire pH scale (pH 0 -14) of the test substance N-[3-(diethylamino)phenyl]acetamide (CAS no. 6375 -46 -8) was estimated to be approx. 1, 1.74, 11.7, 29.9, 35.4, 36.1, 36.0 and 34.4 at pH range 0-4, 5, 6, 7, 8, 9-12, 13 and 14, respectively.
Bioaccumulation test was conducted for estimating the bioconcentration factor (BCF) of test chemical N-[3-(diethylamino)phenyl]acetamide (CAS no. 6375 -46 -8) (ChemSpider, 2017). The bioconcentration factor (BCF) of N-[3-(diethylamino)phenyl]acetamide was estimated to be 4.85 and 33.63 at pH 5.5 and 7.4, respectively.
Another predicted data was estimated usingSciFinder database (American Chemical Society (ACS), 2017) for predicting the bioconcentration factor (BCF) of test chemical N-[3-(diethylamino)phenyl]acetamide (CAS No. 6375 -46 -8). The bioconcentration factor (BCF) of N-[3-(diethylamino)phenyl]acetamide was estimated to be 1.0 at pH range 1-4, respectively and 1.61, 10.8, 27.7, 32.8, 33.4 & 33.5 at pH 5, 6, 7, 8, 9 and 10, respectively (at 25 deg C).
From CompTox Chemistry Dashboard (2017) 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), the bioaccumulation i.e BCF for test substance N-[3-(diethylamino)phenyl]acetamide (CAS no. 6375 -46 -8) was estimated to be 18.7 dimensionless . The predicted BCF result based on the 5 OECD principles. Thus based on the result it is concluded that the test substance N-[3-(diethylamino)phenyl]acetamide is non-bioaccumulative in nature.
In a supporting weight of evidence study from authoritative database (J-CHECK, 2017 and Envichem, 2014) for the read across chemical N-methyl-N-phenylacetamide (CAS no. 579-10-2), bioaccumulation experiment was conducted on test organism Cyprinus carpiofor 6 weeks for evaluating the bioconcentration factor (BCF value) of read across substance N-methyl-N-phenylacetamide under static conditions. The study was performed according to other guideline "Bioaccumulation test of a chemical substance in fish or shellfish" provided in "the Notice on the Test Method Concerning New Chemical Substances". Cyprinus carpio was used as a test organism for the study. Details on analytical methods involve the recovery ratio: Test water: 1st concentration area : 92.4%, 2nd concentration area : 93.5%, Fish : 90.9%, Limit of detection : Fish: 0.15 ppm. Test chemical nominal conc. used for the study were1 mg/l and 0.1 mg/l (w/v), respectively. Range finding study involve the TLm (48 hr) 364 ppm (364 mg/l) (w/v) on Rice fish (Oryzias latipes). Lipid content of the test organism was determined to be 4.8%.The bioconcentration factor (BCF value) of substance N-methyl-N-phenylacetamide on Cyprinus carpio was determined to be 0.37-0.74 at a conc. of 1 mg/l and ≤ 1.7 L/Kg at a conc. of 0.1 mg/l, respectively, which does not exceed the bioconcentration threshold of 2000, indicating that the chemical N-methyl-N-phenylacetamide is not expected to bioaccumulate in the food chain.
On the basis of above results for target chemicalN-[3-(diethylamino)phenyl]acetamide (from EPI suite, ACD labs,ChemSpider, SciFinder database and CompTox Chemistry Dashboard, 2017) and for its read across substance (from authoritative database J-CHECK, 2017 and Envichem, 2014), it can be concluded that the BCF value of test substance N-[3-(diethylamino)phenyl]acetamide ranges from 1 – 36.1 which does not exceed the bioconcentration threshold of 2000, indicating that the chemical N-[3-(diethylamino)phenyl]acetamide is not expected to bioaccumulate in the food chain.
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