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EC number: 615-206-1
CAS number: 709031-45-8
Table: Results of the Vapour pressure Isothermal TGA Analysis
The log PT versus 1/T curve for the substance over the range 170 -190°C
showed poor linearity (correlation coefficient r < 0.99). Extrapolation
of the curve to 20°C or 25°C would not give reliable results for the
vapour pressure of the substance at these temperatures. Since the weight
loss of the test item at 170°C, 180°C and 190°C was lower than the
weight loss of reference substance chrysene at the same temperatures, it
was considered that the vapour pressure of the substance at 20°C (25°C)
is lower than the vapour pressure of chrysene at 20°C (25°C).
The vapour pressure of the substance was determined using the
isothermal thermogravimetric effusion method in a GLP study according to
EC A.4, OECD 104 and OPPTS 830.7950.
The constants specific for the experimental arrangement were
determined using a set of 5 reference compounds. The log PT
versus 1/T curve for the substance over the range 170 -190°C showed poor
linearity (correlation coefficient r < 0.99). Extrapolation of the curve
to 20°C or 25°C would not give reliable results for the vapour pressure
of the substance at these temperatures.
From the measured weight losses in the temperature range 170
-190°C, the vapour pressure of the substance was determined to be lower
than the vapour pressure of reference substance chrysene. The vapour
pressure of the substance at 20°C and 25°C was concluded to be < 8.4E-7
Pa and < 6.6E-7 Pa, resp.
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