Triethoxyoctylsilane

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2012-07-18

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Remarks:

The study was conducted in accordance with OECD 103 and in compliance with a known quality system (ISO 9001:2008)

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling point/boiling range)

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Deviations:

no

GLP compliance:

no

Other quality assurance:

other: ISO 9001:2008

Type of method:

differential scanning calorimetry

Key result

Boiling pt.:

259.6 °C

Atm. press.:

1 013 hPa

Results:

Test	Measured boiling temperature		Measured pressure (kPa)	Boiling temperature corrected to normal pressure
	°C	K		°C	K
1	257.7	530.9	96.8	259.7	532.9
2	257.5	530.7	96.8	259.5	532.7
Mean value	257.6	530.8		259.6	532.8

 

Approximate accuracy of the instrument:

 ± 0.5 K (up to 600 K)

± 2.0 K (up to 1273 K)

At small deviations from the normal pressure (max. ± 5 kPa) the boiling temperatures are normalised to Tn by means of the following number-value equation by Sidney Young:

Tn = T + (fT x ∆p )

∆p = (101.325 – p)

where:

p = pressure measurement in kPa

fT = rate of change of boiling temperature with pressure in K / kPa (correction factor) = 0.44

T = measured boiling temperature in K

Tn = boiling temperature corrected to normal pressure in K

Conclusions:

A boiling point of 259.6°C at 1013 hPa was determined in a reliable study conducted according to OECD 102, the result is considered to be reliable.

Description of key information

Boiling point: 259.6°C (532.8 K) at 1013 hPa (OECD 103)

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

259.6 °C

Additional information

A measured boiling point of 259.6°C (532.8 K) at 1013 hPa was determined for the substance using Differential Scanning Calorimetry (DSC) in accordance with OECD Test Guideline 103 and in compliance with a known quality system (ISO 9001:2008). The result is considered to be reliable and is selected as key study. A predicted boiling point value of 280°C at 1013 hPa was also obtained for the substance using a validated QSAR estimation method.

In available secondary sources to which reliability could not be assigned, boiling point values of 98°C at 2 mmHg, 250°C at 1013 hPa, 257°C at 1013 hPa and 265°C at 1013 hPa were reported for the substance.