Triethoxy(2,4,4-trimethylpentyl)silane

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2015-07-06

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Remarks:

The study was conducted according to a relevant test method and in accordance with a recognised quality system

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling point/boiling range)

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

GLP compliance:

no

Other quality assurance:

other: ISO 9001:2008

Type of method:

photocell detection

Key result

Boiling pt.:

237.2 °C

Atm. press.:

1 013 hPa

Key result

Boiling pt.:

510.4 K

Atm. press.:

1 013 hPa

Results:

Photocell detection method:

The results from the photocell detection method is shown in Table 1 below.

Table 1: Results – photocell detection method

Test	Measured boiling temperature		Measured atmospheric pressure	Boiling temperature corrected to normal atmospheric pressure
	°C	K	hPa	°C	K
1	235.5	508.7	969	237.5	510.7
2	234.8	508.0	969	236.8	510.0
Mean value	235.2	508.4		237.2	510.4

 

Approximate accuracy of the instrument: ± 0.3 K (at 373K)

DSC Measurement:

The DSC diagram (blue line) showed an endothermic peak which represents the boiling temperature. The simultaneous TG (green line) showed a significant loss of weight in the range of this peak. The uncorrected boiling temperature (peak onset at 235.8°C) of this measurement corresponds to the values of the capillary tube/photocell method very closely. The DSC/TG thermograms are attached.

Conclusions:

A boiling point value of 237.2°C (510.4K) at 1013 hPa was determined in a reliable study conducted according to a relevant test method and in compliance with a known quality system. The result is considered to be reliable.

Description of key information

Boiling point: 237.2°C (510.4 K) at 1013 hPa (OECD 103)

Key value for chemical safety assessment

Boiling point at 101 325 Pa:

237.2 °C

Additional information

A measured boiling point value of 237.2°C (510.4 K) at 1013 hPa was determined for the substance using a photocell detection method in accordance with OECD 103 Test Guideline and in compliance with a known quality system (ISO 9001:2008). The result is considered to be reliable and is selected as key study. The key study is supported by a boiling point value of 236.1±1°C (509.3±1°K) at 98 kPa which was determined in a reliable study conducted according to the OECD test guideline and EU test method. The test was not conducted at standard atmospheric pressure.

In a secondary source to which reliability could not be assigned, a boiling point value of 180°C was reported for the substance.