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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:
2017-09-19 to 2018-01-31
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling Point)
Deviations:
no
GLP compliance:
no
Type of method:
differential scanning calorimetry
Key result
Atm. press.:
ca. 1 atm
Decomposition:
yes
Decomp. temp.:
ca. 130 °C
Remarks on result:
other: No boiling point could be determined before the substance's decomposition at a temperature of approximately 130 °C.

Two DSC measurements with a heating rate of 10 K/min showed an endothermal effect in the temperature range of 40 – 75 °C.

The first DSC measurement additionally showed an exothermal effect starting at approx 130 °C indicating the decomposition of the test item. The decomposition of the substance was confirmed by the appearance of the sample after measurement (black residue) combined with a mass loss of 72 % of the initial weigh-in. No additional endothermal effects were observed after the first one between 55 °C - 80 °C and before the exothermal effect starting at approx. 130 °C. The observed exothermal effect indicated a decomposition of the test item and therefore no boiling point could be determined. Therefore, the test item has no boiling point under atmospheric conditions.

Conclusions:
The observed exothermal effect at a temperature of approx. 130 °C indicated the decompostion of the test item and therefore no boiling point could be observed under atmospheric conditions.
Executive summary:

The boiling point / boiling range of the test item was investigated by DSC measurement according to OECD 103. The study showed that the test item starts to decompose at a temperature of approx. 130 °C (indicated by an exothermal effect). No boiling point could be determined before the decomposition. Therefore, the test item has no boiling point under atmospheric conditions.

Description of key information

The boiling point / boiling range of the test item was investigated by DSC measurement according to OECD 103. The study showed that the test item starts to decompose at a temperature of approx. 130 °C (indicated by an exothermal effect). No boiling point could be determined before the decomposition. Therefore, the test item has no boiling point under atmospheric conditions.

Key value for chemical safety assessment

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