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Physical & Chemical properties

Vapour pressure

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Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
25 February 2008 and 31 August 2008.
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2008
Report date:
2008

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: Calculation method according to EC method A4
Principles of method if other than guideline:
Calculation of vapour pressure using Handbook of Chemical Property Estimation Methods.
GLP compliance:
yes (incl. QA statement)
Type of method:
other: calculation method

Test material

Constituent 1
Reference substance name:
37055-00-0
IUPAC Name:
37055-00-0
Constituent 2
Chemical structure
Reference substance name:
1,1,1-triethoxy-N,N-diethylsilanamine
EC Number:
700-051-5
Cas Number:
35077-00-0
Molecular formula:
C10H25NO3Si
IUPAC Name:
1,1,1-triethoxy-N,N-diethylsilanamine

Results and discussion

Vapour pressure
Key result
Test no.:
#1
Temp.:
25 °C
Vapour pressure:
67.5 Pa
Remarks on result:
other: Calculation method used
Remarks:
The material was too volatile for the vapour pressure balance method even when the system was coded below ambient temperature.

Any other information on results incl. tables

Discussion

Attempts were made to determine the vapour pressure experimentally.  The isoteniscope method was unsuccessful because at the temperatures required to provide suitable manometer readings the sample began to decompose.

The material was too volatile for the vapour pressure balance method even when the system was coded below ambient temperature.

Applicant's summary and conclusion

Conclusions:
The vapour pressure of the test material has been calculated to be 67.5 Pa at 25°C.
Executive summary:

The vapour pressure was calculated following Method A4 of Commission Directive 92/69/EEC (which constitutes Annex V of Council Directive 67/548/EEC, in accordance with Method 104 of OECD Guidelines for Testing of Chemicals.

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