Registration Dossier
Registration Dossier
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EC number: 231-555-9 | CAS number: 7632-00-0
Phototransformation in air
Administrative data
Link to relevant study record(s)
Description of key information
After evaporation or exposure to the air, the product will be slowly degraded by photochemical processes. However, since sodium nitrite shows a very low vapour pressure evaporation is negligible; therefore, phototransformation in air is of minor importance.
Key value for chemical safety assessment
Additional information
Indirect photo-oxidation by hydroxy radicals (1500000 molecule/cm3) is predicted to occur with a half-life estimated at 82.3 days (calculated using AOPWIN v1.91 at 25 °C, rate constant, 1.30 x E-13 cm3/molecule/sec, 12 hour day).
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