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Vapour pressure

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vapour pressure
Type of information:
Adequacy of study:
key study
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification
Justification for type of information:
See attached QMRF/QPRF
Principles of method if other than guideline:
The result was obtained using a valid read cross from its parent acid.
Key result
Test no.:
25 °C
Vapour pressure:
0 Pa

< 1.7 x 10E-8 Pa

A vapour pressure value of 1.7E-08 Pa at 25°C was obtained using an accepted calculation method. The result is considered to be reliable.

Description of key information

Vapour pressure: 1.7E-08 Pa at 25°C (QSAR)

Key value for chemical safety assessment

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

Additional information

A vapour pressure value of 1.7E-08 Pa at 25°C was obtained for HEDP-H 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.

In available secondary source to which reliability could not be assigned, vapour pressure value of 23 hPa at 20°C was reported for the substance.