Triethoxypropylsilane

Boiling point

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

GLP compliance:

no

Type of method:

differential scanning calorimetry

Boiling pt.:

178 °C

Atm. press.:

1 013 hPa

Results

The heat flow curves show one sharp endothermic peak with a maximum temperature at 182 °C and an extrapolated onset temperature of 177 °C, indicating the boiling temperature at ambient pressure. Reweighing after the measurement the sample had lost approx. 99 % of its mass. There was no discernible residue.

 

The boiling temperature is determined from the extrapolated onset temperature of the endothermic peak. Since the ambient pressure deviates from the standard pressure, the measured boiling temperatures T were converted to normal boiling points Tn by means of the Sidney-Young equation.

Tn = T + (fT . Δp) fT = 0.036 K/hPa

	extrapolated onset temperature [°C]	boiling temperature [°C] at 1013 hPa
First run	177.30	177.55
Second run	177.24	177.49
Mean value		177.52

 

Conclusion / Summary

A sharp endothermic peak indicating a boiling point could be observed. The normal boiling point was determined at 178 °C.

Conclusions:

A boiling point 178 °C was determined in a reliable study conducted according to an appropriate test protocol (differential scanning calorimetry).

Reference 2

Endpoint:

boiling point

Type of information:

(Q)SAR

Adequacy of study:

supporting study

Study period:

2011

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification

Justification for type of information:

QSAR prediction

Principles of method if other than guideline:

The result was obtained using an appropriate QSAR method (see attached QMRF and QPRF for details).

Type of method:

differential scanning calorimetry

Boiling pt.:

188 °C

Atm. press.:

101.3 kPa

Boiling pt.:

461 K

Atm. press.:

101.3 kPa

Conclusions:

A boiling point value of 188°C (461 K) at 101.3 kPa has been obtained for the test substance using an accepted calculation method. The result is considered reliable.

Description of key information

178°C at 1013 hPa (measured)

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

178 °C

Additional information

A measured boiling point value of 178 °C at 1013 hPa was determined by differential scanning calorimetry according ot OECD 103. The result is considered to be reliable.

This is supported by a predicted value of 188 °C obtained using an appropriate calculation method.