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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:
22-Jul-2014
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
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
Type of method:
photocell detection
Remarks:
capillary tube method
Boiling pt.:
347.8 °C
Atm. press.:
1 013 hPa

Results

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

 

Tn= T + ( fT x delta p)

delta p = (101.325 – p)

p = pressure measurement in kPa

fT= rate of change of boiling temperature with pressure in K / kPa = 0.50

T = measured boiling temperature in K

Tn= boiling temperature corrected to normal pressure in K

 

Correction factor (fT) according to EC-Guideline.

  

Test

 

Measured boiling temperature

Measured atmospheric pressure

Boiling temperature corrected to normal atmospheric pressure

 

°C

K

kPa

°C

K

1

345.9

619.1

961

348.5

621.7

2

344.4

617.6

961

347.0

620.2

Mean value

345.2

618.4

961

347.8

621.0

 

Conclusions:
A boiling point value of 347.8°C at 1013 hPa was determined in a reliable study conducted according to an appropriate test protocol. It was not compliant with GLP.

Description of key information

Dimethoxymethyloctadecylsilane: 347.8°C at 1013 hPa (QSAR)

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
347.8 °C

Additional information

A boiling point value of 347.8 at 1013 hPa was determined by capillary tube method (photocell detection) according to OECD Guideline 103.