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EC number: 267-956-0
CAS number: 67953-76-8
Vapour pressure [HEDP-xK]: <
1.7E-08 Pa at 25°C (QSAR)
The vapour pressure of the sodium
salt of HEDP has been read-across from the parent acid (HEDP-H). A
predicted vapour pressure of 1.7E-8 Pa at 25°C was obtained for HEDP-H
using an accepted calculation method
(MPBPVP program, USEPA/Syracuse Research, v1.43). This predicted value
is read-across to the salt, HEDP-xK as <1.7E-8 at 25°C since the vapour
pressure of the salt is expected to be lower than that of the parent
acid. The result (Fisk 2010) is considered to be reliable and is
selected as a key study.
The impurities are phosphonate
salts that are structurally similar to the main constituent or inorganic
salts; all will have negligible vapour pressure.
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