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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

The half life period of Eicosanoic acid in water is 15 days and based on this value it can be concluded that the chemical is not persistent in water medium since the half life is less than the threshold of 60 days (to qualify the chemical as persistent). Also the diffusion percentage of Eicosanoic acid in water medium is 24%.This coupled with the dilution of water shall result in ready biodegradabililty of the chemical.

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

The half life period of Eicosanoic acid in water is 15 days and based on this value it can be concluded that the chemical is not persistent in water medium since the half life is less than the threshold of 60 days (to qualify the chemical as persistent). Also the diffusion percentage of Eicosanoic acid in water medium is 24%.This coupled with the dilution of water shall result in ready biodegradabililty of the chemical.

PBT Profiler Database

Media

Half-Life (days)

Percent in
Each Medium

Water

15

  24%

Fugacity Model by EPI Suite estimation database

 

Mass Amount (percent)

Half-Life (hr)

Emissions (kg/hr)

Water

24.5

360

1000

 

Fugacity (atm)

Reaction (kg/hr)

Advection (kg/hr)

Reaction (percent)

Advection (percent)

Water

8.16e-012

658

342

21.9

11.4