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Boiling point

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boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
22-May to 30-Jun 2017
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
according to
OECD Guideline 103 (Boiling Point)
according to
EU Method A.2 (Boiling Temperature)
GLP compliance:
not specified
Type of method:
differential scanning calorimetry
Boiling pt.:
228 °C
Atm. press.:
1 013 hPa

Results of preliminary thermogravimetric measurements:

Two steps were registered with maxima at 184 °C and 201 °C. A total mass loss of 99.7 % at the final temperature could be observed, considering the initial mass loss from purging (ca.0.5 % before the start of the measurement): Mass change in the range until 192 °C: 98.0 % (97.5 % + 0.5 %); mass change in the range from 192 to 350 °C: 1.7 %.

After cooling, no residue was discernible.

Results of DSC measurements

Upon heating, the heat flow curve shows another one endothermic peak with a maximum temperature at 232 / 232 °C and an extrapolated onset temperature of 227.5 / 227.6 °C, indicating the boiling temperature at ambient pressure. Reweighing after the

measurement the sample had lost approx. 99.5 / 99.7 % of its mass. After cooling, no residue was discernible

Normal boiling point: 228 °C

A boiling point value of 228 °C at 1013 hPa was determined in a reliable study conducted according to an appropriate test protocol.

Description of key information

Trichloro(4-methylphenyl)silane: 228 °C at 1013 hPa (Differential scanning calorimetry, EU method A.2)

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
228 °C

Additional information