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Environmental fate & pathways

Phototransformation in water

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Description of key information

o-terphenyl: not susceptible to photolysis
p-terphenyl: not susceptible to photolysis
m-terphenyl: DT50 = 140 days

Key value for chemical safety assessment

Additional information

Three terphenyl isomers were tested for direct photolysis with sunlight during a 29 day period. The o- and p-isomer showed no significant decrease in concentration after 29 days of sunlight exposure, indicating that they are not susceptible to direct aqueous photolysis by sunlight. For m-terphenyl the half-life was calculated to be 140 days.