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EC number: 947-313-7
CAS number: -
Table 4.3.1 Observations Pre-test for the
boiling point following Siwoloboff
Test items colour became lighter
Bubbles inside of the liquid of the test item rose up
197, 204, 212, 214, 216, 220, 222, 224, 226 °C
Test terminated for safety reason.
Immediately no bubbles anymore.
Superheating was indicated by the
substance (strongly) spraying out of the container.
After cooling down the test item
appeared slightly darker.
Table 4.3.2 Observations Main-test for
the boiling point following Siwoloboff
Some bubbles visible after setting in the block
Test item getting clearer
No bubbles anymore
Since 105 °C
Some bubbles in large interval.
Colour of test item getting darker
Since 200 °C
Test item boils with vapour and superheating. No boiling chain.
Test stopped for safety reasons.
After cooling down the test item
appeared as a clear, viscous red-brown liquid, whereas the original test
item was a yellow-brown liquid. Signs of decomposition (colour change)
Finally no boiling point could be
determined up to 220°C using the SIWOLOBOFF method. Decomposition
of the substance was suspected during
the test : Small bubbles observed from 100°C and colour change observed
from 105°C (lowest temperature) may be either the signs of
decomposition of the substance or the sign of releasing of trapped more
volatile compounds in the matrix.
observations were made which might cause doubts on the validity of the
study outcome. Therefore, the result of the study is considered valid.
study was conducted to determine the boiling point of the test substance
under GLP according to OECD 103 / EU A2 guideline.
The Siwoloboff method was performed to
determine the initial boiling point of the substance. However, No
boiling point can be determined. Signs of potential decomposition of the
substance were observed during the experiments: Small bubbles observed
from 100°C and colour change observed from 105°C (lowest temperature)
may be either the signs of decomposition of the substance or the sign of
releasing of trapped more volatile compounds in the matrix.
Finally, no temperature
of initial boiling point or initial decomposition of the test item can
be determined using the Siwoloboff method.
No boiling point can be determined using
standard method conducted in this study (Siwoloboff method).
Signs of potential decomposition of the
substance were observed during the test.
A reliable GLP experimental study, conducted
according to a recognized OECD/EC guidelines is available.
It is considered as a key study.
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