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EC number: 229-539-1 | CAS number: 6598-63-6
Endpoint summary
Administrative data
Description of key information
Bioaccumulation: aquatic/sediments:
From BCFBAF Program (v3.00) model of EPI suite the estimated bio concentration factor (BCF) for Trisodium 4-[[1-hydroxy-6-[[[[5-hydroxy-6-(phenylazo)-7-sulphonato-2-naphthyl]amino]carbonyl]amino]-3-sulphonato-2-naphthyl]azo]benzoate (CAS No: 6598-63-6) is 10 L/kg wet-wt which does not exceed the bioconcentration threshold of 2000. Thus it is concluded that the test chemical Trisodium 4-[[1-hydroxy-6-[[[[5-hydroxy-6-(phenylazo)-7-sulphonato-2-naphthyl]amino]carbonyl]amino]-3-sulphonato-2-naphthyl]azo]benzoate is not expected to bio accumulate in the aquatic environment.
Additional information
Bioaccumulation: aquatic/sediments:
Different predicted data study for target chemical Trisodium 4-[[1-hydroxy-6-[[[[5-hydroxy-6-(phenylazo)-7-sulphonato-2-naphthyl]amino]carbonyl]amino]-3-sulphonato-2-naphthyl]azo]benzoate (CAS No: 6598-63-6) and one experimental data study of its read across chemical were summarized below for bioaccumulation endpoint.
The first predicted data study was done from BCFBAF Program (v3.00) model of Estimation Program Interface (EPI suite, 2017) in this study the bio concentration factor (BCF) for test chemical Trisodium 4-[[1-hydroxy-6-[[[[5-hydroxy-6-(phenylazo)-7-sulphonato-2-naphthyl]amino]carbonyl]amino]-3-sulphonato-2-naphthyl]azo]benzoate (CAS No: 6598-63-6)was estimated to be is 10 L/kg wet-wt which does not exceed the bioconcentration threshold of 2000.
Another predicted data study was done by using Bio-concentration Factor (v12.1.0.50374) module of Advanced Chemistry Development/I-lab predictive module (2017) in this study the Bio-concentration Factor at range pH 1-14 of the chemical Trisodium 4-[[1-hydroxy-6-[[[[5-hydroxy-6-(phenylazo)-7-sulphonato-2-naphthyl]amino]carbonyl]amino]-3-sulphonato-2-naphthyl]azo]benzoate estimated to be 1.0 dimensionless.
Similarly, one more predicted data study was done 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) the bioaccumulation i.e BCF for test substance Trisodium 4-[[1-hydroxy-6-[[[[5-hydroxy-6-(phenylazo)-7 -sulphonato-2-naphthyl]amino]carbonyl]amino]-3-sulphonato-2-naphthyl]azo]benzoate(CAS no.6598 -63 -6) was estimated to be 3.19 dimensionless . The predicted BCF result was based on the 5 OECD principles.
The supporting experimental weight of evidence study was from authoritative database (J Check, 2017) in this study bioaccumulation test was conducted for 28 days for determination the bioconcentration factor (BCF) of read across chemical tetrasodium3,3'-[carbonylbis[imino(2-methyl-4,1-phenylene)azo]]bisnaphthalene-1,5-disulphonate (CAS no 3214-47-9) on test organism Cyprinus carpio.
Recovery ratio was in Fish : 83.4 %, and Limit of quantitation was in Test water at 1st concentration area was 0.020 mg/L, and on 2nd concentration area was 0.0020 mg/L, Fish : 0.24 microg/g. Nominal concentrations used in the study are 1st Concentration area: 1.0 mg/L, 2nd Concentration area: 0.1 mg/L and Range finding study was carried out on Rice fish (Oryzias latipes) LC50(96 h) > 600 mg/L. The lipid content at start of exposure was 2.18 % and at end of exposure was 4.19 %. Thus according to static Fish Test the BCF value of read across chemical tetrasodium 3,3'-[carbonylbis[imino(2-methyl-4,1-phenylene)azo]]bisnaphthalene-1,5-disulphonate was observed to be ≤ 0.25-1.0 L/kg at dose concentration 1.0 mg/L and ≤ 0.25 L/kg at dose concentration 0.1 mg/L on the basis of lipid content on test organism Cyprinus carpio during 28 days period. These BCF values indicate that the read across substance tetrasodium 3,3'-[carbonylbis[imino(2-methyl-4,1-phenylene)azo]]bisnaphthalene-1,5-disulphonate is not bioaccumulative in fish and food chain as these values are far less than 2000 criteria.
On the basis of results of all above mentioned studies for test chemical Trisodium 4-[[1-hydroxy-6-[[[[5-hydroxy-6-(phenylazo)-7-sulphonato-2-naphthyl]amino]carbonyl]amino]-3-sulphonato-2-naphthyl]azo]benzoate (CAS No: 6598-63-6) the BCF value of this test chemical is in range of 1- 10 L/kg. This range of BCF value indicates that test chemical Trisodium 4-[[1-hydroxy-6-[[[[5-hydroxy-6-(phenylazo)-7-sulphonato-2-naphthyl]amino]carbonyl]amino]-3-sulphonato-2-naphthyl]azo]benzoate is not bioaccumulative in fish and food chain as these values are far less than 2000 criteria.
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