Registration Dossier

Environmental fate & pathways

Phototransformation in air

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Administrative data

Link to relevant study record(s)

Description of key information

The Substance Eicosanoic acid is not persistent in air medium as the half life period of Eicosanoic acid in air is only 0.62days which does not exceeds the criteria of 2 days.

Key value for chemical safety assessment

Half-life in air:
0.62 d
Degradation rate constant with OH radicals:
0 cm³ molecule-1 s-1

Additional information

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 = 0.000000000025 cm3/molecule-sec.

Media

Half-Life
(days)

Percent in
Each Medium

Air

0.62

  1%