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Environmental fate & pathways

Phototransformation in air

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Description of key information

Rate constant: 0.000000000000125338 cm³/(molecule*sec) 
Degradation: 50% after 10.2 hours (0.85 days)

Key value for chemical safety assessment

Additional information

Alcohols, C7 -9 -iso, C8 -rich has the potential to degrade in the atmosphere from hydroxyl radical attack and photodegradation can be a predominant daylight atmospheric degradation process for this substance. The photodegradation half-life of this substance as mediated by OH-attack is estimated as 0.85days or 10.2 hours based on a 12-hour sunlight day. The half-life is calculated for a 12 -hr day because it normalizes degradation to standard day-light period during which hydroxyl radicals needed for degradation are generated.