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Environmental fate & pathways

Biodegradation in water and sediment: simulation tests

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Description of key information

Half-life period of 4-aminoazobenzene-3,4'-disulphonic acid in water is observed to be 37.5 days (900 hrs.) while in sediment it is 337.5 days (8100 hrs). Based on these half-life values of 4-aminoazobenzene-3,4'-disulphonic acid, it is concluded that the chemical is not persistent in water and persistent in sediment.

Key value for chemical safety assessment

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

Additional information

Half-life period of 4-aminoazobenzene-3,4'-disulphonic acid in water is observed to be 37.5 days (900 hrs.) while in sediment it is 337.5 days (8100 hrs). Based on these half-life values of 4-aminoazobenzene-3,4'-disulphonic acid, it is concluded that the chemical is not persistent in water and persistent in sediment.