Registration Dossier
Registration Dossier
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EC number: 212-783-8 | CAS number: 868-85-9
Phototransformation in air
Administrative data
Link to relevant study record(s)
Description of key information
T1/2air = 2.9 d (sensitizer: OH-radicals, 0.5 x 10E6 molecules/cm³) (AOP Win v 1.92)
Key value for chemical safety assessment
Additional information
Dimethyl phosphonate entering into the atmosphere is expected to be photodegraded rapidly by OH-radicals. Based on the estimated degradation rate constant of 5.5760 x 10E-12 cm3/molecule-sec the calculated half-life of dimethyl phosphonate in air due to indirect photodegradation is T½ = 2.9 days, considering a mean OH-radical concentration of 0.5 x 10E6 molecules/cm3 during a 24 h day (Bayer AG, 2003; Currenta, 2008).
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