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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:
26-28 August 2002
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling Point)
Qualifier:
according to
Guideline:
EU Method A.2 (Boiling Temperature)
GLP compliance:
yes (incl. certificate)
Other quality assurance:
other: In-house quality assurance: study was periodically inspected and properly signed records of inspections were submitted to testing facility management and the study director; report has been audited by the Quality Assurance Unit.
Type of method:
differential scanning calorimetry
Key result
Boiling pt.:
109 °C
Atm. press.:
101.3 kPa
Decomposition:
no
Remarks:
No decomposition is evident from the thermogram

In both tests, an endothermal boiling peak was observed.

The measured temperatures are summarized in the following table.

Measured temperatures

1st test

2nd test

Mean

Atmospheric pressure [mbar]

1013*

1014*

---

Amount of test substance [mg]

18.06

15.38

---

Start temperature [K / °C]

298 / 25

298 / 25

298 / 25

Heating rate [K/min]

5.0

5.0

5.0

Onset temperature

[endothermal boiling] (K / °C)

382 / 109

382 / 109

382 / 109

* Because the results are given without decimals, the atmospheric pressure correction was not neccessary.

Summing up it can be said, that the test substance C-Quart has an exact boiling point. The measured value is only valid for the available concentration of the test substance. The boiling point stems from the boiling of the water which is a major component (43%; m/m) of the test substance. The precission of the DSC measurement is specified in the guideline to be ± 0.5°C. This precission is only valid for pure test substances but not for mixtures. Nevertheless it is added to the result of this study.

Conclusions:
The boiling point of the test item is 109 °C.
Executive summary:

The boiling point of the test item was determined by differential scanning calorimetry in a GLP study according to EU test method A.2 and OECD testing guideline 103. The boiling point of the test item is 109 °C.

Description of key information

The boiling point of the test item is 109 °C.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
109 °C

Additional information