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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information


Biodegradation in water ability was predicted (SSS QSAR prediction model, 2016) for the test substance Sodium 5-(aminosulphonyl)-2-(7-(diethylamino)-2-oxo-2H-1-benzopyran-3-yl)benzoxazolesulphonate (CAS No. 93859-32-6) using the SSS QSAR prediction model. The ready biodegradability of the test substance Sodium 5 -(aminosulphonyl)- 2-(7-(diethylamino)-2-oxo-2H-1-benzopyran-3-yl)benzoxazolesulphonate was estimated as 45.29% in 28 days by using O2 consumption parameter.This result indicates that Sodium 5-(aminosulphonyl)-2-(7-(diethylamino)-2-oxo-2H-1-benzopyran-3-yl)benzoxazolesulphonate was estimated to be not readily biodegradable in water.

Key value for chemical safety assessment

Biodegradation in water:
under test conditions no biodegradation observed

Additional information

The predicted data for the test compoundSodium 5-(aminosulphonyl)-2-(7-(diethylamino)-2-oxo-2H-1-benzopyran-3-yl)benzoxazolesulphonate(CAS No. 93859-32-6) were reviewed for the biodegradation end point which are summarized as below:

Biodegradation in water ability was predicted (SSS QSAR prediction model, 2016) for the test substance Sodium 5-(aminosulphonyl)-2-(7-(diethylamino)-2-oxo-2H-1-benzopyran-3-yl)benzoxazolesulphonate (CAS No. 93859-32-6) using the SSS QSAR prediction model. The ready biodegradability of the test substance Sodium 5 -(aminosulphonyl)- 2-(7-(diethylamino)-2-oxo-2H-1-benzopyran-3-yl)benzoxazolesulphonate was estimated as 45.29% in 28 days by using O2 consumption parameter.

This result indicates that Sodium 5-(aminosulphonyl)-2-(7-(diethylamino)-2-oxo-2H-1-benzopyran-3-yl)benzoxazolesulphonate was estimated to be not readily biodegradable in water.

 

Estimation Programs Interface Suite (EPI suite, 2016) was run to predict the biodegradation potential of the test compoundSodium 5-(aminosulphonyl)-2-(7-(diethylamino)-2-oxo-2H-1-benzopyran-3-yl)benzoxazolesulphonate(CAS No. 93859-32-6). The screening test ready biodegradability of the substance was calculated using the software BIOWIN v4.10. The results indicate thatSodium 5-(aminosulphonyl)-2-(7-(diethylamino)-2-oxo-2H-1-benzopyran-3-yl)benzoxazolesulphonateis expected to be not readily biodegradable in nature.

 

 

On the basis of above results for target substance, it can be concluded that the test substance can be expected to be not readily biodegradable in nature.