Registration Dossier

Diss Factsheets

Environmental fate & pathways

Phototransformation in air

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Key value for chemical safety assessment

Additional information

Indirect photochemical degradation of neodecanoic acid as mediated by OH-attack is estimated to have a half-life of 1.4 days or 17.0 hours based on a 12 -hour sunlight day, a rate of 7.55E-12 cm3/molecule*sec. A 12-hour day half-life value normalizes degradation to a standard day light period during which hydroxyl radicals needed for photolysis are generated in the atmosphere. Although NDA has the potential to degrade rapidly by OH-attack, modeling results indicate limited partitioning of NDA (2.57%) to the air compartment as well as a relatively short atmospheric oxidation half-life (17.0 hours). Consequently this process is unlikely to contribute significantly to the loss of NDA from the environment.