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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:
From 5 August 2014 to 13 August 2014
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)
Qualifier:
according to
Guideline:
EPA OPPTS 830.7220 (Boiling Point / Boiling Range)
Principles of method if other than guideline:
The differential scanning calorimetry (DSC) allows to record the difference in heat flow of two crucibles, one filled with test substance and the other left empty as reference, while these crucibles are subjected to a controlled temperature programme. A transition of the test substance, such as melting or evaporation, is indicated by a deviation from the base line in the heat flow record. Because melting and evaporation are processes in which heat is consumed, the deviation from the base line is in the endothermic direction for these processes. The melting temperature or boiling temperature of the test substance is evaluated from the DSC curve as the extrapolated onset temperature of the endothermic melting or evaporation peak.
As a safety precaution for the DSC cell a preliminary test was performed using a thermogravimetric analyzer (TGA).
GLP compliance:
yes (incl. certificate)
Type of method:
differential scanning calorimetry
Specific details on test material used for the study:
Commercial name: Dimetol (as reported in the report):
Chemical nature: 2,6-dimethylheptan-2-ol
Molecular weight: 144.2 g/mol
CAS number: 13254-34-7
Batch: PE00090447
Purity: 99.6 %
Expiry date: 28 May 2016
Key result
Boiling pt.:
177 °C
Atm. press.:
1 010 hPa
Decomposition:
no
Remarks on result:
other: The boiling temperature of the test item has been determined to be 177°C (450K) at 1010 +/-2 hPa.
Conclusions:
The boiling temperature of the test item has been determined to be 177+/-1°C (450+/-1K) at 100.5 kPa.
Executive summary:

A study was conducted to determine the boiling point of Dimetol using the differential scanning calorimetry analysis designed to be compatible with Method A2 Boiling Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 103 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.

The boiling temperature of the test item has been determined to be 177 °C (450K) at 1010 +/- 2 hPa.

Description of key information

A study was conducted to determine the boiling point of Dimetol using the differential scanning calorimetry analysis designed to be compatible with Method A2 Boiling Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 103 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
177 °C

Additional information