Registration Dossier
Registration Dossier
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EC number: 200-338-0 | CAS number: 57-55-6
Phototransformation in air
Administrative data
Link to relevant study record(s)
Description of key information
Monopropylene glycol undergoes reactions with hydroxyl radicals in the atmosphere. The half life of monopropylene glycol due to this reaction, based on a 12-hr day with an OH radical concentration of 1.5E06 OH/cm3 is 0.83 days. The overall rate constant is 12.82 E-12 cm3/molecule-sec.
Key value for chemical safety assessment
Additional information
The calculated half life of monopropylene glycol is 0.83 days with an OH radical concentration of 1.5E06 OH/cm3 (Aopwin, 2000). No reaction of monopropylene glycol with ozone or other atoms were calculated. Overall, monopropylene glycol is rapidly degraded in the atmosphere.
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