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Description of key information

Estimation Programs Interface (EPI) Suite (2016) prediction model was run to predict the half-life in water and sediment for the test compound 2,4-Diaminobenzenesulfonic acid (CAS No. 88 -63 -1). If released in to the environment, 35 % of the chemical will partition into water according to the Mackay fugacity model level III and the half-life period of 2,4-Diaminobenzenesulfonic acid in water is estimated to be 37.5 days (900 hrs). The half-life (37.5 days estimated by EPI suite) indicates that the exposure risk to aquatic animals is moderate to low whereas the half-life period of 2,4-Diaminobenzenesulfonic acid in sediment is estimated to be 337.5 days (8100 hrs). However, as the percentage release of test chemical into the sediment is less than 1% (i.e, reported as 0.0835%), indicates that 2,4-Diaminobenzenesulfonic acid is not persistent in nature.   

Key value for chemical safety assessment

Half-life in water:
37.5 d
at the temperature of:
25 °C
Half-life in sediment:
337.5 d
at the temperature of:
25 °C

Additional information

Estimation Programs Interface (EPI) Suite (2016) prediction model was run to predict the half-life in water and sediment for the test compound 2,4-Diaminobenzenesulfonic acid (CAS No. 88 -63 -1). If released in to the environment, 35 % of the chemical will partition into water according to the Mackay fugacity model level III and the half-life period of 2,4-Diaminobenzenesulfonic acid in water is estimated to be 37.5 days (900 hrs). The half-life indicates non persistence in water whereas the half-life period of 2,4-Diaminobenzenesulfonic acid in sediment is estimated to be 337.5 days (8100 hrs) indicating persistence in this medium. However, as the percentage release of test chemical into the sediment is less than 1% (i.e, reported as 0.0835%), indicates that 2,4-Diaminobenzenesulfonic acid is not persistent in nature.