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Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
February 7, 2012.
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
According to EU Method A.4. GLP Study.
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
effusion method: Knudsen cell
Key result
Temp.:
20 °C
Vapour pressure:
2.88 Pa
Key result
Temp.:
25 °C
Vapour pressure:
5.34 Pa

Vapour pressure of di(tert-butoxy)diacetoxysilane at 20 ºC and 25 ºC was calculated on the basis of equation log (P) = f (1/t) = a-b/(t+273.15) where, P – vapour pressure in Pa, t – temperature in ºC, obtained for three measurement points: 24.80, 28.50 and 33.20 ºC.

Conclusions:
The vapour pressure of di(tert-butoxy)diacetoxysilane was determined to be 2.88 Pa at 20ºC and 5.34 at 25 ºC.
Executive summary:

The study of vapour pressure using effusion method was performed in accordance with EU Method A.4 (based on the method OECD 104). The vapour pressure of di(tert-butoxy)diacetoxysilane was determined to be 2.88 Pa at 20ºC and 5.34 at 25 ºC.

Description of key information

Key study: EU Method A.4. GLP study. The vapour pressure of di(tert-butoxy)diacetoxysilane was determined to be 2.88 Pa at 20ºC and 5.34 at 25 ºC.

Key value for chemical safety assessment

Vapour pressure:
2.88 Pa
at the temperature of:
20 °C

Additional information

Key study: The study of vapour pressure using effusion method was performed in accordance with EU Method A.4 (based on the method OECD 104). The vapour pressure of di(tert-butoxy)diacetoxysilane was determined to be 2.88 Pa at 20ºC and 5.34 at 25 ºC.

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