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EC number: 229-029-9 | CAS number: 6406-56-0
Endpoint summary
Administrative data
Description of key information
Hydrolysis:
Half life of hydrolysis of test chemical Sodium 4-(4-(2-hydroxynaphthalenylazo)phenylazo)benzenesulphonate was estimated by suing OECD QSAR tool box v3.4 and considering five closest read across chemical with log Kow as primary descriptor. The half life of hydrolysis of test chemical Sodium 4-(4-(2-hydroxynaphthalenylazo)phenylazo)benzenesulphonate was estimated to be 422.22 days. On the basis of this half life value it is concluded that Sodium 4-(4-(2-hydroxynaphthalenylazo)phenylazo)benzenesulphonate is not hydrolysable.
Additional information
Hydrolysis:
Predicted data study for target chemical sodium 4-({4-[(2-hydroxy-1 naphthyl)diazenyl]phenyl }diazenyl)benzenesulfonate (CAS no. 6406-56-0) and experimental study for its structurally similar read across chemical are summarized below for hydrolysis endpoint
In a predicted data study the Half life of hydrolysis of test chemical Sodium 4-(4-(2-hydroxynaphthalenylazo)phenylazo)benzenesulphonate was estimated by suing OECD QSAR tool box v3.4 and considering five closest read across chemical with log Kow as primary descriptor. The half life of hydrolysis of test chemical Sodium 4-(4-(2-hydroxynaphthalenylazo)phenylazo)benzenesulphonate was estimated to be 422.22 days. On the basis of this half life value it is concluded that Sodium 4-(4-(2-hydroxynaphthalenylazo)phenylazo)benzenesulphonate is not hydrolysable.
Next study was experimental study done from authoritative data base (HSDB, 2017) in this study the read across chemical disodium 6-hydroxy-5-[(4-sulfonatophenyl)diazenyl]naphthalene-2-sulfonate (CAS no.2783-94-0) is not expected to undergo hydrolysis in the environment due to the lack of functional groups that hydrolyze under environmental conditions On the basis of this it is concluded that this test chemical is not hydrolysable.
On the basis of both the studies it is concluded that test chemical sodium 4-({4-[(2-hydroxy-1-naphthyl)diazenyl]phenyl}diazenyl)benzenesulfonate can be considered as not hydrolysable.
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