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Environmental fate & pathways

Bioaccumulation: aquatic / sediment

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Reference
Endpoint:
bioaccumulation in aquatic species, other
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
accepted calculation method
Justification for type of information:
Data is from computational model developed by USEPA
Qualifier:
no guideline available
Principles of method if other than guideline:
Prediction done using BCFBAF (v3.01) model.
GLP compliance:
not specified
Specific details on test material used for the study:
- Name (IUPAC): 7-[(E)-2-{4-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]-2-(carbamoylamino)phenyl}diazen-1-yl]naphthalene-1,3,6-trisulfonic acid
- Molecular formula: C20H16ClN9O10S3
- Molecular weight: 674.0504 g/mol
- Smiles notation: S(=O)(=O)(c1c(/N=N/c2c(NC(=O)N)cc(Nc3nc(nc(n3)Cl)N)cc2)cc2c(S(=O)(=O)O)cc(S(=O)(=O)O)cc2c1)O
- InChl: 1S/C20H16ClN9O10S3/c21-17-26-18(22)28-20(27-17)24-9-1-2-12(13(5-9)25-19(23)31)29-30-14-7-11-8(4-16(14)43(38,39)40)3-10(41(32,33)34)6-15(11)42(35,36)37/h1-7H,(H3,23,25,31)(H,32,33,34)(H,35,36,37)(H,38,39,40)(H3,22,24,26,27,28)/b30-29+
- Substance type: Organic
- Physical state:
Radiolabelling:
not specified
Vehicle:
not specified
Test organisms (species):
other: Fish
Route of exposure:
aqueous
Test type:
other: estimation
Water / sediment media type:
natural water: freshwater
Test temperature:
25 deg.C
Reference substance (positive control):
not specified
Key result
Temp.:
25 °C
Type:
BCF
Value:
3.162 L/kg
Basis:
whole body w.w.
Calculation basis:
other: estimated
Remarks on result:
other: Non-bioaccumulative

BCFBAF Program (v3.01) Results:

==============================

SMILES : S(=O)(=O)(c1c(N=Nc4c(NC(=O)N)cc(Nc3nc(nc(n3)CL)N)cc4)cc2c(S(=O)(=O)O)

cc(S(=O)(=O)O)cc2c1)O

CHEM  :

MOL FOR: C20 H16 CL1 N9 O10 S3

MOL WT : 674.04

--------------------------------- BCFBAF v3.01 --------------------------------

Summary Results:

Log BCF (regression-based estimate): 0.50 (BCF = 3.16 L/kg wet-wt)

Biotransformation Half-Life (days) : 7.13e-005 (normalized to 10 g fish)

Log BAF (Arnot-Gobas upper trophic): -0.05 (BAF = 0.897 L/kg wet-wt)

 

Log Kow (experimental): not available from database

Log Kow used by BCF estimates: -0.66

 

Equation Used to Make BCF estimate:

Log BCF = 0.50 (Ionic; Log Kow dependent)

 

 

Estimated Log BCF = 0.500 (BCF = 3.162 L/kg wet-wt)

Validity criteria fulfilled:
not specified
Conclusions:
Using BCFBAF Program (v3.00) model of EPI suite 2018, the estimated bio concentration factor (BCF) for 7-[[2-[(aminocarbonyl)amino]-4-[(4-amino- 6-chloro-1,3,5-triazin-2-yl)amino]phenyl]azo]naphthalene-1,3,6-trisulphonic acid (CAS No. 35642-64-9) is 3.162 L/kg wet-wt at 25 deg. c which does not exceed the bioconcentration threshold of 2000. Therefore it is concluded that test chemical 7-[[2-[(aminocarbonyl) amino]-4-[(4- amino-6- chloro- 1,3,5-triazin-2-yl)amino] phenyl]azo]naphthalene-1,3,6-trisulphonic acid is non bioaccumulative in food chain.
Executive summary:

Using BCFBAF Program (v3.00) model of EPI suite 2018, the estimated bio concentration factor (BCF) for 7-[[2-[(aminocarbonyl)amino]-4-[(4-amino-6-chloro -1,3,5-triazin-2-yl)amino]phenyl]azo]naphthalene-1,3,6-trisulphonic acid (CAS No. 35642-64-9) is 3.162 L/kg wet-wt at 25 deg. c which does not exceed the bioconcentration threshold of 2000. Therefore it is concluded that test chemical 7-[[2-[(aminocarbonyl) amino]-4-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino] phenyl]azo]naphthalene-1,3,6-trisulphonic acid is non bioaccumulative in food chain.

Description of key information

Using BCFBAF Program (v3.00) model of EPI suite 2018, the estimated bio concentration factor (BCF) for 7-[[2-[(aminocarbonyl)amino]-4-[(4-amino-6-chloro -1,3,5-triazin-2-yl) amino]phenyl]azo]naphthalene-1,3,6-trisulphonic acid (CAS No. 35642-64-9) is 3.162 L/kg wet-wt at 25 deg. c which does not exceed the bioconcentration threshold of 2000. Therefore it is concluded that test chemical 7-[[2-[(aminocarbonyl) amino]-4-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino] phenyl]azo]naphthalene-1,3,6 -trisulphonic acid is non bioaccumulative in food chain.

Key value for chemical safety assessment

BCF (aquatic species):
3.162 L/kg ww

Additional information

Various predicted data for the target compound 7-[(E)-2-{4-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]-2-(carbamoylamino)phenyl}diazen-1-yl]naphthalene-1,3,6-trisulfonic acid(CAS No. 35642-64-9) and supporting weight of evidence studies for its functionally similar read across substance were reviewed for the bioaccumulation end point which are summarized as below:

 

In aprediction done using theBCFBAF Program(v3.01) of Estimation Programs Interface (EPI Suite, 2018), the estimated bio concentration factor (BCF) for 7-[[2-[(aminocarbonyl)amino]-4-[(4-amino-6-chloro -1,3,5-triazin-2-yl)amino]phenyl]azo]naphthalene-1,3,6-trisulphonic acid (CAS No. 35642-64-9) is 3.162 L/kg wet-wt 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 Bio-concentration Factor (BCF) at range pH 1-14  of the chemical 7-[[2-[(aminocarbonyl)amino]- 4-[(4-amino- 6-chloro-1,3,5-triazin-2-yl)amino]phenyl]azo] naphthalene-1,3,6-trisulphonic acid (CAS no. 35642-64-9) was estimated to be 1.0 dimensionless.

 

Another predicted data was estimated usingSciFinder database (American Chemical Society (ACS), 2017) was used for predicting the bioconcentration factor (BCF) of test chemical7-[(E)-2-{4-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]-2-(carbamoylamino)phenyl}diazen-1-yl]naphthalene-1,3,6-trisulfonic acid(CAS No. 35642-64-9). The Bioconcentration factor (BCF) of test substance 7-[[2-[(aminocarbonyl)amino]-4-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]phenyl]azo]naphthalene-1,3,6-trisulphonic acid at pH 1-10 and temperature 25 °C was estimated to be 1.0 dimensionless.

 

The Bioconcentration factor (BCF) of test chemical 7-[[2-[(aminocarbonyl)amino]-4-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]phenyl]azo] naphthalene- 1,3,6- trisulphonic acid (CAS No: 35642 -64 -9) was estimated using Chemspider database(ChemSpider, 2017).The bioconcentration factor (BCF) of test substance 7-[[2-[(aminocarbonyl)amino]-4-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]phenyl]azo]naphthalene-1,3,6-trisulphonic acid at pH 5.5 and pH 7.4 was estimated to be 1.0 dimensionless. 

In a supporting weight of evidence study from authoritative database (J-CHECK, 2017) for the read across chemical 1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-((4-sulfo-1-naphthalenyl)azo)-, trisodium salt (CAS no. 2611-82-7),bioaccumulation experiment was conducted on test organism Cyprinus carpio for 28 days for evaluating the bioconcentration factor (BCF value) of 1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-((4-sulfo-1-naphthalenyl)azo)-, trisodium salt. 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: 100% (The test solution were input analytical equipment directly), Fish: 82.4%, - Limit of quantitation: Test water: 1st concentration area : 21µg/l, 2nd concentration area : 2.1µg/l, Fish: 260 ng/g. Test chemical nominal conc. used for the study were 0.474mg/land 0.0474 mg/l, respectively. Range finding study involve the LC50 (96 hr) > 200 mg/l onRice fish (Oryzias latipes).The bioconcentration factor (BCF value) of substance 1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-((4-sulfo-1-naphthalenyl)azo)-, trisodium salt on Cyprinus carpio was determined to be ≤ 0.55 L/Kg at a conc. of 0.474 mg/l and ≤ 5.6 L/Kg at a conc. of 0.0474 mg/l, respectively.

 

Another bioaccumulation study was conducted for estimating the BCF (bioaccumulation factor) value of the same read across chemical 1,3 -Naphthalenedisulfonic acid, 7 -hydroxy-8 -((4 -sulfo-1 -naphthalenyl)azo)-, trisodium salt (CAS no. 2611 -82 -7) (HSDB, 2017). The bioaccumulation factor (BCF) value was calculated using a measured water solubility of 80,000 mg/l and a recommended regression-derived equation. The estimated BCF (bioaccumulation factor) valueof 1,3 -Naphthalenedisulfonic acid, 7 -hydroxy-8 -((4 -sulfo-1 -naphthalenyl)azo)-, trisodium salt was determined to be 1.0 dimensionless.

 

On the basis of above results for target chemical 7-[(E)-2-{4-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]-2-(carbamoylamino)phenyl}diazen-1-yl]naphthalene-1,3,6-trisulfonic acid(from EPI suite, ACD labs,SciFinder and ChemSpider database,2017) and for its read across substance (from authoritative database HSDB and J-CHECK, 2017), it can be concluded that the BCF value of test substance7-[(E)-2-{4-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]-2-(carbamoylamino)phenyl}diazen-1-yl]naphthalene-1,3,6-trisulfonic acidranges from 1 – 3.162 which does not exceed the bioconcentration threshold of 2000, indicating that the chemical 7-[(E)-2-{4-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]-2-(carbamoylamino)phenyl}diazen-1-yl]naphthalene-1,3,6-trisulfonic acid is not expected to bioaccumulate in the food chain.