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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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Diss Factsheets

Physical & Chemical properties

Vapour pressure

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Description of key information

The chemical structure and handling experience with similar solutions at very low concentration like ammonia 1% by wt. allow estimating that the vapour pressure of monochloramine solution at 10 g/L (1%) at 25 °C should be very near to the vapour pressure of water at this temperature i.e. it is about 32 hPa.

Key value for chemical safety assessment

Vapour pressure:
32 hPa
at the temperature of:
25 °C

Additional information

The substance starts to decompose at 28°C while vapour pressure test is recommended at temperatures between 40°C and 60°C. Therefore, vapour pressure test is considered as technically not feasible on the substance.

Nevertheless, the chemical structure and handling experience with similar solutions at very low concentration like ammonia 1% by wt. allow estimating that the vapour pressure of monochloramine solution at 10 g/L (1%) at 25 °C should be very near to the vapour pressure of water at this temperature i.e. it is about 32 hPa.