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Description of key information

Adsorption/desorption

Adsorption study was conducted for estimating the adsorption coefficient (Koc) value of test chemical Dipotassium 4,4'-bis[6 -anilino-4 -[bis(2 -hydroxyethyl)amino-1,3,5 -triazin-2 -yl]amino]stilbene-2,2'-disulphonate (CAS no. 71230 -67 -6). The adsorption coefficient (Koc) value of test substance Dipotassium 4,4'-bis[6 -anilino-4 -[bis(2 -hydroxyethyl)amino-1,3,5 -triazin-2 -yl]amino]stilbene-2,2'-disulphonatewas estimated to be 8100000 L/Kg (Log Koc = 6.908). This Koc value indicates that the substance Dipotassium 4,4'-bis[6 -anilino-4 -[bis(2 -hydroxyethyl)amino-1,3,5 -triazin-2 -yl]amino]stilbene-2,2'-disulphonate has a very strong sorption to soil and sediment and therefore have negligible migration potential to ground water.

Additional information

Adsorption/desorption

Various experimental studies for the target compound Dipotassium 4,4'-bis[6-anilino-4-[bis(2-hydroxyethyl)amino-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulphonate (CAS No. 71230-67-6) and supporting weight of evidence study for its read across substance were reviewed for the adsorption end point which are summarized as below:

 

In an experimental weight of evidence study from authoritative database (INERIS, 2009) for the target chemical Dipotassium 4,4'-bis[6-anilino-4-[bis(2-hydroxyethyl)amino-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulphonate (CAS No. 71230-67-6), adsorption experiment was conducted for estimating the adsorption coefficient (Koc) value of test chemical Dipotassium 4,4'-bis[6 -anilino-4 -[bis(2 -hydroxyethyl)amino-1,3,5 -triazin-2 -yl]amino]stilbene-2,2'-disulphonate. The adsorption coefficient (Koc) value of test substance Dipotassium 4,4'-bis[6 -anilino-4 -[bis(2 -hydroxyethyl)amino-1,3,5 -triazin-2 -yl]amino]stilbene-2,2'-disulphonate was estimated to be 8100000 L/Kg (Log Koc = 6.908).

 

Another adsorption study was conducted for estimating the adsorption coefficient (Koc) value of test chemical Dipotassium 4,4'-bis[6 -anilino-4 -[bis(2 -hydroxyethyl)amino-1,3,5 -triazin-2 -yl]amino]stilbene-2,2'-disulphonate (CAS no. 71230 -67 -6) (OECD SIDS, 2005). The adsorption coefficient (Koc) value was calculated using a PCKOCWIN v.1.66 program. The adsorption coefficient (Koc) value of test substance Dipotassium 4,4'-bis[6 -anilino-4 -[bis(2 -hydroxyethyl)amino-1,3,5 -triazin-2 -yl]amino]stilbene-2,2'-disulphonate was estimated to be 8133000000 (Log Koc = 9.91).

 

For the read across chemical Benzenesulfonic acid,2,2'-(1,2-ethenediyl)bis[5-[[4-[(2-hydroxyethyl)methylamino]-6-(phenylamino)-1,3,5-triazin-2-yl]amino]-,sodium salt (1:2) (CAS no. 13863-31-5) from authoritative database (HSDB, 2017), adsorption study was conducted for estimating the adsorption coefficient (Koc) value of read across chemical Benzenesulfonic acid,2,2'-(1,2 -ethenediyl)bis[5 -[[4 -[(2 -hydroxyethyl)methylamino]-6 -(phenylamino)-1,3,5 -triazin-2 -yl]amino]-,sodium salt (1:2). The adsorption coefficient (Koc) value was calculated using a structure estimation method based on molecular connectivity indices. The adsorption coefficient (Koc) value of substance Benzenesulfonic acid,2,2'-(1,2 -ethenediyl)bis[5 -[[4 -[(2 -hydroxyethyl)methylamino]-6 -(phenylamino)-1,3,5 -triazin-2 -yl]amino]-,sodium salt (1:2) was estimated to be 600000000 (Log Koc = 8.778).

 

On the basis of above overall results for target chemical Dipotassium 4,4'-bis[6-anilino-4-[bis(2-hydroxyethyl)amino-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulphonate(from authoritative database INERIS, 2009 and secondary source OECD SIDS, 2005) and for its read across substance (from authoritative database HSDB, 2017), it can be concluded that the Koc value of test substanceDipotassium 4,4'-bis[6-anilino-4-[bis(2-hydroxyethyl)amino-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulphonateranges from 8100000–8133000000 indicating that the test chemical Dipotassium 4,4'-bis[6-anilino-4-[bis(2-hydroxyethyl)amino-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulphonate has a very strong sorption to soil and sediment and therefore have negligible migration potential to ground water.