Registration Dossier
Registration Dossier
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EC number: 500-105-6 | CAS number: 39423-51-3 1 - 6.5 moles propoxylated
Henry's Law constant
Administrative data
Link to relevant study record(s)
Description of key information
The calculated Henry's law constant of the test substance is calculated to range between 2.93E-06 and 3.2E-06
Pa.m3/mol at 25°C, depending on the sum of x, y and z in the chemical structure (which is 5-6). The Kair-water (dimensionless Henry's law constant) is then 1.18E-09-1.29E-09.
Key value for chemical safety assessment
Additional information
The distribution between water and air can be predicted based on Henry's law constant. From the calculated value, it can be concluded that the test substance will predominantly be in the water phase.
For the calculation, the experimentally determined vapour pressure of 0.0041 Pa at 25°C was used, as well as the water solubility of 562 g/L at 20°C (extrapolated by EUSES to 602 g/L at 25°C for calculation purposes).
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