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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:
21st June, 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling Point)
GLP compliance:
yes
Type of method:
differential scanning calorimetry
Boiling pt.:
115.46 °C
Decomposition:
yes
Decomp. temp.:
135.01 - 174.64 °C

The sample was observed to undergo an endothermic event from 93.8 °C (4.3 J/g). A minor exothermic event was then observed to commence from 135.0 °C which had a heat of decomposition of - 8.3 J/g. No further significant energetic events were noted up to 400 °C.

Endotherm onset temperature: 93.8 °C

Endotherm magnitude: 4.3 J/g

Exotherm onset temperature: 135.0 °C

Heat of decomposition: - 8.3 J/g

Conclusions:
The boiling point of the substance is 115.46 °C.
Executive summary:

Τhe substance was tested for boiling point according to the OECD Guidelines 103 (Differential Scanning Calorimetry). The sample was observed to undergo an endothermic event from 93.8 °C (4.3 J/g). A minor exothermic event was then observed to commence from 135.0 °C which had a heat of decomposition of - 8.3 J/g. No further significant energetic events were noted up to 400 °C.

The boiling point of the substance is 115.46 °C.

Description of key information

Boiling point: 115.46 °C

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
115.46 °C

Additional information

Propiophenone was tested for boiling point according to the OECD Guidelines 103 (Differential Scanning Calorimetry). At 115 °C an endothermic peak (onset 93.78 °C, enthalpy = -4.28 J/g) was observed, corresponding to the boiling point. Onwards, an exothermic peak was observed between 135 -174 °C (enthalpy = 8.3 J/g) (Carter, 2016); this reaction can be attributed to the substance decomposition.

Further literature data identify the boiling point at approximately 200 °C. The reliability of these information cannot be evaluated because they are reported in handbooks (Yalkowsky et al., 2010 and Lewis, 2008) and secondary source (HSDB) and there no details regarding testing methods and procedures.

REFERENCE

Yalkowsky S.H., He Y.,Jain P. (2010). Handbook of Aqueous Solubility Data. Second Edition. CRC Press.

Hazardous Substances Data Bank (HSDB). Budavari S. (1989). The Merck Index - Encyclopedia of Chemicals, Drugs and Biologicals. Rahway, NJ: Merck and Co., Inc., 1989., p. 1244 **PEER REVIEWED**

Lewis R.J. (2008). Hazardous Chemicals Desk Reference. Sixth edition. John Wiley & Sons, Inc., publication. Pag. 643.