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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:
1995-06-16 to 1995-09-13
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
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.:
203 °C
Atm. press.:
103.1 kPa
Remarks on result:
other: 203 ± 2°C
Key result
Boiling pt.:
473 K
Atm. press.:
103.1 kPa
Remarks on result:
other: 473 ± 2K

Table 1: Results

Stage of test

Temperature (K)

Determination 1

Determination 2

Bubbles began to emerge from the close capillary tube

365

365

Bubbles were emerging from the closed capillary tube at a steady rate- the heat source was removed

479

481

Boiling temperature- test material rose rapidly inside the closed capillary tube

476

477

Atmospheric pressure (kPa)

102.72

103.12

Mean boiling temperature = 476 ± 2 K.

Conclusions:
A boiling temperature of 203 ± 2°C (476 ± 2 K) at 1013 hPa has been determined for the substance using an appropriate test method and in compliance with GLP. The result is considered reliable.

Description of key information

Boiling point: 203 ± 2°C at 1013 hPa (EU Method A.2)

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
203 °C

Additional information

Three reliable measured boiling point studies are available for the submission substance. A measured boiling point value of 203 ± 2°C at 1013 hPa was determined for the substance using a Siwoloboff method in accordance with EU Test Method A.2 and in compliance with GLP. The result is considered reliable and is selected as key study.

In addition, a boiling point of 200.6°C at 1013 hPa was determined for the substance using a photocell detection method and in compliance with GLP. Also, a boiling point value of 201.9°C at 1000.4 hPa was determined for the substance using a Siwoloboff method.

The results are in good agreement with the key study. The key study was selected as the most recent study.