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EC number: 246-430-4 | CAS number: 24720-09-0
Results of the vapor pressure determinations
Volume* V (mL)
Mass of test item in Trap 1 (µg)
Mass of test item in Trap 2 (µg)
Total mass of test item (µg)
Vapor pressure (Pa)
Average Vapor pressure [Pa] (Std Dev)
3.26 (1.79 * 10-2)
*Corrected volume at test temperature as calculated under “Volume correction”
The linearity of the detector response with respect to concentration was assessed over the concentration range of 1.07 to 1.07 X 103 mg/L (n = 7). The results were satisfactory with a correlation coefficient of 1.000 being obtained.
The concentrations in the sample solutions from traps 1 ranged between 42.2 and 189 mg/L, and therefore, were within the calibration range. For traps 2 (0.05 —0.14 mg/L), inaccuracy in the determination is considered negligible as this collected fraction represents less than 0.5% of the total amount.
The vapour pressure of the test substance was measured under GLP according to OECD 104 / EU A4 guideline, gas saturation method.
Determinations were conducted at 25, 35 and 45 °C, with three flow rates per temperature. Mass of evaporated test item was quantified by GC. Vapor pressure at 25 °C was interpolated from the regression.
The vapor pressure of the test item has been determined to be 3.2 Pa at 25 °C.
A fully reliable experimental study, conducted according to a recognized OECD/EC method and under GLP, is available. Therefore, it is considered as a key study, and the result is retained as key data for purpose of CSA.
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