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Physical & Chemical properties

Boiling point

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Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
23 March 2017 - 18 August 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
Study was conducted in accordance with international guidelines and in accordance with GLP. All guideline validity criteria were met.
Qualifier:
according to guideline
Guideline:
EU Method A.2 (Boiling Temperature)
Version / remarks:
Regulation (EC) 440/2008 of 30 May 2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling Point)
Version / remarks:
27 July 1995
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
photocell detection
Key result
Boiling pt.:
221.8 °C
Atm. press.:
101.3 kPa
Decomposition:
no
Remarks on result:
other: Mean value arising from Test 1 and Test 2.
Remarks:
Mean value has been corrected to standard pressure.
Boiling pt.:
221.2 °C
Atm. press.:
101.3 kPa
Decomposition:
no
Remarks on result:
other: Test 1
Remarks:
Measured boiling temperature has been adjusted to standard pressure.
Boiling pt.:
222.4 °C
Atm. press.:
101.3 kPa
Decomposition:
no
Remarks on result:
other: Test 2
Remarks:
Measured boiling temperature has been adjusted to standard pressure.

Table 4       Experimental Results

Test No.

Atmospheric Pressure (hPa)

Boiling Temperature

Boiling Point*

K

K

1

1000

493.8

220.6

494.4

221.2

2

1000

495.0

221.8

495.6

222.4

Mean:

495.0

221.8

* Boiling point: boiling temperature corrected to standard pressure of 1013 hPa.

Following the outcome of the preliminary test, the main test was started at 216 °C with a heating rate of 0.5 K/min.

Conversion of Units (K to °C):     t = T-273.15 (t in °C and T in K)

Calculation of boiling point: Using Sidney Young equation, as per EU A.2./OECD 103.

Conclusions:
The boiling temperature of the substance has been determined to be 221.8 ± 0.5 °C (495.0 ± 0.5 K) at 1013 hPa (atmospheric pressure)
Executive summary:

EU Method A.2. – The boiling point of the test item was determined using photocell detection.  The procedure employed was designed to be compatible with Method A.2. Boiling Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008.

Aliquots of test item (5 – 10 mm) were placed in capillary tubes fused at one end and subjected to a thermal program from 10 K above ambient to 673 K.  Heating was at a constant rate of 5K/min.  The boiling point was reached when the flow of vapour bubbles reached a frequency of 0.6 Hz.  Two determinations were carried out.  The mean of both determinations is reported as the boiling temperature.

The thermographic data was used to determine the boiling point of the test item as 221.8 °C ± 0.5 °C at 1013 hPa.

Description of key information



Boiling Point: 221.8 °C ± 0.5 °C (494.95 K ± 0.5 K); EU Method A.2.; C Bär (2017)



Key value for chemical safety assessment

Boiling point at 101 325 Pa:
221.8 °C

Additional information

EU Method A.2. – The boiling point of the test item was determined using photocell detection.  The procedure employed was designed to be compatible with Method A.2. Boiling Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008.

Aliquots of test item (5 – 10 mm) were placed in capillary tubes fused at one end and subjected to a thermal program from 10 K above ambient to 673 K.  Heating was at a constant rate of 5K/min.  The boiling point was reached when the flow of vapour bubbles reached a frequency of 0.6 Hz.  Two determinations were carried out.  The mean of both determinations is reported as the boiling temperature.

The thermographic data was used to determine the boiling point of the test item as 221.8 °C ± 0.5 °C at 1013 hPa.