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EC number: 700-253-3 | CAS number: 115258-10-1
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2009-12-08 to 2010-02-17
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Well performed GLP study according to recent OECD technical guidelines.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
- Report date:
- 2010
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- adopted March 23, 2006
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- 761/200)/EC, August 2009
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Certificate attached to full study report.
- Type of method:
- effusion method: by loss of weight or by trapping vaporisate
Test material
- Reference substance name:
- N-(3-{1,1,1,5,5,5-hexamethyl-3-[(trimethylsilyl)oxy]trisiloxan-3-yl}propyl)prop-2-enamide
- EC Number:
- 700-253-3
- Cas Number:
- 115258-10-1
- Molecular formula:
- C15H37NO4Si4
- IUPAC Name:
- N-(3-{1,1,1,5,5,5-hexamethyl-3-[(trimethylsilyl)oxy]trisiloxan-3-yl}propyl)prop-2-enamide
Constituent 1
Results and discussion
Vapour pressureopen allclose all
- Temp.:
- 20 °C
- Vapour pressure:
- 0 Pa
- Temp.:
- 20 °C
- Vapour pressure:
- 0 mm Hg
Any other information on results incl. tables
In the plot of the log vTof the test substance as function of the reciprocal temperatures was plotted. The coefficient of correlation (r) was > 0.99. Extrapolation of the curve to 20°C resulted in a value of -7.54 for the log vT, 20of the test substance. Fitting this value in the regression curve, a vapour pressure of 2.82 x 10-4Pa = 2.12 x 10-6mm Hg was obtained.
Table: Results of isothermal TGA analysis
Temperature (°C) |
Weight loss (µg/min) |
VT (g/cm2/h) (g/cm2/h) |
log vT |
100 |
4.010 |
4.79 x 10-4 |
- 3.32 |
|
3.818 |
4.56 x 10-4 |
- 3.34 |
110 |
11.09 |
1.32 x 10-3 |
- 2.88 |
|
11.09 |
1.32 x 10-3 |
- 2.88 |
120 |
26.60 |
3.18 x 10-3 |
- 2.50 |
|
27.15 |
3.24 x 10-3 |
- 2.49 |
130 |
55.75 |
6.65 x 10-3 |
- 2.18 |
|
55.50 |
6.62 x 10-3 |
- 2.18 |
Applicant's summary and conclusion
- Conclusions:
- The isothermal thermogravi metric effusion method was chosen for the determination of the vapour pressure of N-[3-tris(trimethylsilyloxy)silylpropyl]prop-2-Enamide. The vapour pressure of the test substance at 20°C (293K) was 2.82 x 10-4 Pa = 2.12 x 10-6 mm Hg.
- Executive summary:
The results of the physico-chemical properties of the test substance are given below.
Vapour pressure
EC A.4 and OECD 104
2.82 x 10-4 Pa =
2.12 x 10-6 mmHgat 20°C by isothermal thermogravimetry
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