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Environmental fate & pathways

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Bioaccumulation:aquatic/sediments:

Using BCFBAF Program (v3.00) model of EPI suite (2017) the estimated bio concentration factor (BCF) for 4-amino-3,6-bis[[4-[[4-chloro-6-[(3-sulphophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulphophenyl]azo]-5-hydroxynaphthalene-2,7-disulphonic acid  (CAS No. 51357-74-5) 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 4-amino-3,6-bis[[4-[[4-chloro-6-[(3-sulphophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulphophenyl]azo]-5-hydroxynaphthalene-2,7-disulphonic acid  is non bioaccumulative in food chain.

Additional information

Bioaccumulation:aquatic/sediments:

Various predicted data for the target compound 4-amino-3,6-bis[[4-[[4-chloro-6-[(3-sulphophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulphophenyl]azo]-5-hydroxynaphthalene-2,7-disulphonic acid  (CAS No. 51357-74-5) and supporting weight of evidence study for its read across chemical were reviewed for the bioaccumulation end point which are summarized as below:

First weight of evidence study was done by using BCFBAF Program (v3.00) model of Estimation Program Interface (EPI suite, 2017) the estimated bio concentration factor (BCF) for 4-amino-3,6-bis[[4-[[4-chloro-6-[(3-sulphophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulphophenyl]azo]-5-hydroxynaphthalene-2,7-disulphonic acid  (CAS No. 51357-74-5) is 3.162 L/kg wet-wt at 25 deg. c which does not exceed the bioconcentration threshold of 2000.

Second weight of evidence study was done by using Bio-concentration Factor (v12.1.0.50374) module of Advanced Chemistry Development /I-lab predictive module in this study the Bio-concentration Factor at range pH 1-14  of the chemical 4-amino-3,6-bis[[4-[[4-chloro-6-[(3-sulphophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulphophenyl]azo]-5-hydroxynaphthalene-2,7-disulphonic acid (CAS no.51357 -74 -5) estimated to be 1.0 dimensionless.

Third weight of evidence study was done by using Scifinder database of American Chemical Society (ACS, 2017) in this study the Bioconcentration factor (BCF) of test substance 4-amino-3,6-bis[[4-[[4-chloro-6-[(3-sulphophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulphophenyl]azo]-5-hydroxynaphthalene-2,7-disulphonic acid  at pH 1-10 and temperature 25 °C was estimated to be 1.0 dimensionless.

Fourth weight of evidence study was done by using Chemspider- ACD/PhysChem Suite of Royal Society of Chemistry (RCS, 2017) in this study the Bioconcentration factor (BCF) of test substance 4-amino-3,6-bis[[4-[[4-chloro-6-[(3-sulphophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulphophenyl]azo]-5-hydroxynaphthalene-2,7-disulphonic acid  at pH 5.5 and pH 7.4 was estimated to be 1.0 dimensionless. This BCF value suggests that the test chemical 4-amino-3,6-bis[[4-[[4-chloro-6-[(3-sulphophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulphophenyl]azo]-5-hydroxynaphthalene-2,7-disulphonic acid  is non bioaccumulative in aquatic organisms.

Last study was supporting experimental study done from authoritative database (J check, 2017) in this study the bioaccumulation test was conducted for 6 weeks for determination the bioconcentration factor (BCF) of read across chemical 2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-3,6-bis[2-[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]diazenyl]-, sodium salt (1:4)(CAS no 17095-24-8) on test organism Cyprinus carpio.Recovery ratio used was Test water : 1st concentration area : 98.4 %, 2nd concentration area : 95.4 %, Fish : 62.2 %, - Limit of detection : Test water 1st concentration area : 0.15 ppm, 2nd concentration area : 0.016 ppm, Fish : 2.1 ppm. Nominal concentrations used in the study are 1st Concentration area: 2.0 mg/L, 2nd Concentration area: 0.2 mg/L and Range finding study was carried out on Rice fish (Oryzias latipes) TLm(48h) >= 1000 ppm(w/v). The lipid content of fish was 4.7 %. Thus according to static Fish Test the BCF value of read across chemical 2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-3,6-bis[2-[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]diazenyl]-, sodium salt (1:4)was observed to be≤ 1.1 L/kg at dose concentration 2.0 mg/L and ≤ 11 L/kg at dose concentration 0.2 mg/L  on the basis of lipid content on test organism Cyprinus carpio during 6 weeks period. These BCF values indicate that the substance 2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-3,6-bis[2-[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]diazenyl]-, sodium salt (1:4) is not bioaccumulative in fish and food chain as these values are far less than 2000 criteria.

On the basis of above results for target chemical 4-amino-3,6-bis[[4-[[4-chloro-6-[(3-sulphophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulphophenyl]azo]-5-hydroxynaphthalene-2,7-disulphonic acid  (CAS No. 51357-74-5) (from EPI suite, ACD labs, Sci Finder database, Chemspider and CompTox Chemistry Dashboard 2017) and for its read across chemicals (From J Check, 2017) it can be concluded that the BCF value of test substance 4-amino-3,6-bis[[4-[[4-chloro-6-[(3-sulphophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulphophenyl]azo]-5-hydroxynaphthalene-2,7-disulphonic acid ranges from 1 to 3.162 dimensionless which does not exceed the bioconcentration threshold of 2000, indicating that the chemical 4-amino-3,6-bis[[4-[[4-chloro-6-[(3-sulphophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulphophenyl]azo]-5-hydroxynaphthalene-2,7-disulphonic acid is expected to be nonbioaccumulative in the food chain.