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EC number: 284-895-5
CAS number: 84989-06-0
The fraction of tar acids, rich in 2,4- and 2,5-dimethylphenol, recovered by distillation of low-temperature coal tar crude tar acids.
2.67 kPa at 80 °C
5.60 kPa at 90 °C
11.7 kPa at 110 °C
17.6 kPa at 125 °C
Linear equation: log p = -2326.1*(1/T)+10.059
Nature of the change during measuring: none
Nature of the change for estimate: none
Temperature of transition: -
An estimate of the vapour pressure:
133.1 Pa at 209 °C
180.8 Pa at 25 °C
243.1 Pa at 30 °C
725.5 Pa at 50 °C
133.1 Pa at 20 °C
(estimated from measured vapour pressure curve according to OECD 104)
The vapour pressure value for Tar acids, xylenol fraction will vary
depending on the ratio of constituents present in the substance. A value
of 133.1 Pa at 20 °C was experimentally determined according OECD 104.
In a supporting study the vapour pressure of another material was
calculated based on literature values for the substances present in the
sample to be 12 Pa at 25 °C.
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