Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

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).