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Adsorption/desorption:

The Soil Adsorption Coefficient i.e Koc 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 (CAS no.51357 -74 -5) was estimated using Adsorption Coefficient module (v12.1.0.50374) program as Koc 1.0 dimensionless (log Koc= 0.0). This log Koc value indicates that the 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 has a negligible sorption to soil and therefore has rapid migration potential to groundwater.

Additional information

Adsorption/desorption:

Various predicted data for the target compound of 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) were reviewed for the Adsorption end points which are summarized as below.

In first weight of evidence study the Soil Adsorption Coefficient i.e Koc 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 (CAS no.51357 -74 -5) was estimated using Adsorption Coefficient module (v12.1.0.50374) program of Advanced Chemistry Development (ACD)/I-lab predictive module as Koc 1.0 dimensionless (log Koc= 0.0).

 

Next weight of evidence study was done by using Sci Finder database of American Chemical Society (ACS, 2017) in this study the soil adsorption co-efficient i.e., Koc value of 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 was estimated to be 1.0 dimensionless ( log Koc = 0.0) at pH 1-10 at temperature 25 deg.c.

 

Last weight of evidence study was done by Using Chemspider-ACD/Phy chem suite of Royal Society of Chemistry (RCS, 2017) in this study the soil adsorption co-efficient i.e., Koc 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  was estimated to be 1.0 dimensionless (log Koc= 0.0) at pH 5.5 and 7.4 and temperature 25 deg.C

 

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 ACD labs, Scifinder, and Chemspider, 2017) it can be concluded that the log Koc value of test substance is 0.0 dimensionless 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 (CAS no.51357-74 -5) has negligible sorption to soil and sediment and therefore have rapid migration potential to ground water.