Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Phototransformation in air

The atmospheric oxidation half-life of Eicosanoic acid was estimated using the level III multimedia model. It was estimated that the substance is not persistent in air medium as the half life period of Eicosanoic acid in air is 0.62 days. This indicates that Eicosanoic acid is easily phototransformed in air.

OVERALL OH Rate Constant =0.000000000025cm3/molecule-sec.

Media

Half-Life
(days)

Percent in
Each Medium

Air

0.62

  1%

Hydrolysis

The Hydrolysis rate constant of Eicosanoic acid is estimated to be 0.0000000000253065 cm3/molecule-sec. at half life of 5.072 hrs.The estimated half life of the substance indicates that the substance is moderately hydrolysable.

Phototransformation in water

No experimental data available. As this study is not a standard information requirement in REACH and there is no indication from the CSA on the need to investigate further the fate and behaviour of the substance (Annex X requirement), no further testing is considered necessary.

Phototransformation in soil

No experimental data available. As this study is not a standard information requirement in REACH and there is no indication from the CSA on the need to investigate further the fate and behaviour of the substance (Annex X requirement), no further testing is considered necessary.