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Boiling point

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Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
December 22, 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling Point)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.2 (Boiling Temperature)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
method according to Siwoloboff
Key result
Boiling pt.:
ca. 252 °C
Atm. press.:
ca. 1 024 hPa
Remarks on result:
other: Standart deviation:+-0.5
Remarks:
Average value

Temperature range for the test item, obtained from preliminary study was :100 - 400ºC. Below the temperature of 240 °C, the temperature gradient of 3 °C/min was used. Above 240 °C the used gradient was 0.5 °C/min. (at about 10.0 °C below the expected boiling temperature).

Table No.1: The observed values of the boiling point of test item

Sample

The boiling point value, °C (automatically)

Atmospheric pressure, hPa

1

252,0

1024

2

251,6

3

252,5

Average values ± standard deviations, °C

252.0± 0.5

-

Conclusions:
The boiling point of test item was observed at temperature of 252.0± 0.5 °C under atmospheric pressure of 1024 hPa.
Executive summary:

In accordance with OECD guideline 103 and GLP study, the determination of boiling point using capilarry tube in metal block and BÜCHI Melting Point B-565 apparatus were performed. Preliminary test was caried out to determine the temperature range (100 -400ºC) and then three series of measurement were carried out in this temperature range. The visual observation were carried out. The boiling temperature was defined as the temperature at which a continuous flow bubbles were observed. The average value of boiling point was found at the temperature 252.0± 0.5°C under atmospheric pressure of 1024hPa.

Description of key information

Key study : OECD guideline 103, GLP study. The average value of boiling point was found automatically at 252.0± 0.5°C under atmospheric pressure of 1024hPa.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
252 °C

Additional information

Key study: In accordance with OECD guideline103 and GLP study, the determination of boiling point using capilarry tube in metal block and BÜCHI Melting Point B-565 apparatus were performed. Preliminary test was caried out to determine the temperature range and then three series of measurement were carried out in this temperature range. The average value of boiling point was found automatically at 252.0± 0.5°C. under atmospheric pressure of 1024hPa.