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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Physical & Chemical properties

Vapour pressure

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Description of key information

Vapour pressure (DTPMP-K): <2.7 E-09 Pa at 25 °C (QSAR)

Key value for chemical safety assessment

Vapour pressure:
0 Pa
at the temperature of:
25 °C

Additional information

The vapour pressure of the potassium salt of DTPMP has been read-across from the parent acid. A vapour pressure value of 2.7 E-09 Pa was obtained at 25 °C using accepted calculation method (MPBPVP program, USEPA/Syracuse Research, v1.43). The result (Fisk 2010) is considered to be reliable as a key study. This value represents the major constituent only and demonstrates that it is involatile. The vapour pressure of the salt would be expected to be lower than for the acid form.