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EC number: 908-300-1
CAS number: -
The mass of sample weighed for each assay was reported in the
table below. The sample was placed in a Knudsen effusion cell. Then the
cell was placed in the apparatus.
Mass of test item
Knudsen effusion cell aperture size(µm)
Taken into account or not
* the loss of mass was not measured as no
linear part was recorded.
For the assay No. 1 a small loss of weight, representing about 2%
of the initial mass, was recorded at 50 °C but without any linear part.
The slope of the loss of mass was not constant and decreased
continuously until becoming close to zero.No degradation of the test
item was observed after the experiment; the powder remained slightly
The temperature was increased up to 80 °C and the results were
The loss of mass observed at the beginning of the assays is not
significant and can correspond to the evaporation of volatile impurities
or to the stabilisation of the mass.
vapour pressure of the test item was considered to be lower than 10-3
Pa at 50 °C and as a consequence largely lower than 10-3 Pa
at 20 °C (OECD 104)
Testing was conducted according to a scientifically valid and accepted
method (OECD 104).
It was not possible to find another appropriate method to measure
the vapour pressure of this multiconstituents substance with a
relatively low vapour pressure (lower than 10-3 Pa).
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