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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 4,4'-dinitrostilbene-2,2'-disulphonic acid in water observed 60days.(half-life) while in sediment it is 540 days.(half-life). Based on this half life values of 4,4'-dinitrostilbene-2,2'-disulphonic acid, it is concluded that the chemical is non biodegradable in water and sediment medium.

Key value for chemical safety assessment

Half-life in freshwater:
60 d
at the temperature of:
25 °C
Half-life in freshwater sediment:
540 d
at the temperature of:
25 °C

Additional information

Half life period of 4,4'-dinitrostilbene-2,2'-disulphonic acid in water observed 60days (half-life) while in sediment it is 540 days.(half-life).

The supporting study also indicates the half life of 4,4'-dinitrostilbene-2,2'-disulphonic acid in water and sediment to be 1440 hrs and 13000 hrs respectively.

Based on this half life values of 4,4'-dinitrostilbene-2,2'-disulphonic acid, it is concluded that the chemical is non biodegradable in water and sediment medium.

Media

Half life

(days)

Percent in Medium

Water

60

7%

sediment

540

11%

Media

Half life

(hrs)

Percent in medium

Emission

(kg/hr)

 

Soil

1440

7.22%

 

1000

Sediment

13000

10.9%

 

0

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