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EC number: 700-319-1 | CAS number: 117646-83-0
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- The study was conducted between 07 August 2015 and 11 August 2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: 1= Reliable without restriction o GLP guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 015
- Report date:
- 2015
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: vapour pressure balance
Test material
- Reference substance name:
- 2-{2-[(2-ethylhexyl)oxy]ethoxy}ethyl prop-2-enoate
- Cas Number:
- 117646-83-0
- Molecular formula:
- C15H28O4
- IUPAC Name:
- 2-{2-[(2-ethylhexyl)oxy]ethoxy}ethyl prop-2-enoate
- Test material form:
- other: liquid
- Details on test material:
- Identification: M
120
Appearance/Physical State:
Clear colorless liquid
Batch:
NC-5635-01
Purity:
99.4%
Expiry Date:
05 October 2015
Storage Conditions:
Room temperature in the dark
Constituent 1
Results and discussion
Vapour pressure
- Temp.:
- 25 °C
- Vapour pressure:
- 0.044 Pa
Any other information on results incl. tables
Run 5
Vapor Pressure Data
Temperature (ºC) |
Temperature (K) |
Reciprocal Temperature (K-1) |
Mass Difference (µg) |
Mass Difference (kg) |
Vapor Pressure (Pa) |
Log10Vp |
30 |
303.15 |
0.003298697 |
65.49 |
6.549E-08 |
0.090916898 |
-1.041355388 |
31 |
304.15 |
0.003287851 |
75.60 |
7.560E-08 |
0.104952169 |
-0.979008583 |
32 |
305.15 |
0.003277077 |
88.00 |
8.800E-08 |
0.122166545 |
-0.913047707 |
33 |
306.15 |
0.003266373 |
102.31 |
1.023E-07 |
0.142032492 |
-0.847612294 |
34 |
307.15 |
0.003255738 |
116.43 |
1.164E-07 |
0.161634669 |
-0.791465481 |
35 |
308.15 |
0.003245173 |
135.01 |
1.350E-07 |
0.187428469 |
-0.727164441 |
36 |
309.15 |
0.003234676 |
154.41 |
1.544E-07 |
0.214360640 |
-0.668854956 |
37 |
310.15 |
0.003224246 |
181.94 |
1.819E-07 |
0.252579333 |
-0.597602188 |
38 |
311.15 |
0.003213884 |
203.80 |
2.038E-07 |
0.282926613 |
-0.548326199 |
39 |
312.15 |
0.003203588 |
234.11 |
2.341E-07 |
0.325004659 |
-0.488110414 |
40 |
313.15 |
0.003193358 |
270.96 |
2.710E-07 |
0.376161900 |
-0.424625195 |
A plot of Log10(vapor pressure (Pa)) versus reciprocal temperature (1/T(K)) for Run 5 gives the following statistical data using an unweighted least squares treatment.
Slope: |
-5.84 x 103 |
Standard error in slope: |
32.6 |
Intercept: |
18.2 |
Standard error in intercept: |
0.106 |
The results obtained indicate the following vapor pressure relationship:
Log10(Vp (Pa)) = -5.84 x 103/temp(K) + 18.2
The above yields a vapor pressure (Pa) at 298.15 K with a common logarithm of -1.36.
Run 6
Vapor Pressure Data
Temperature (ºC) |
Temperature (K) |
Reciprocal Temperature (K-1) |
Mass Difference (µg) |
Mass Difference (kg) |
Vapor Pressure (Pa) |
Log10Vp |
30 |
303.15 |
0.003298697 |
65.80 |
6.580E-08 |
0.091347258 |
-1.039304485 |
31 |
304.15 |
0.003287851 |
75.04 |
7.504E-08 |
0.104174745 |
-0.982237553 |
32 |
305.15 |
0.003277077 |
87.43 |
8.743E-08 |
0.121375239 |
-0.915869900 |
33 |
306.15 |
0.003266373 |
102.46 |
1.025E-07 |
0.142240730 |
-0.846976027 |
34 |
307.15 |
0.003255738 |
114.63 |
1.146E-07 |
0.159135808 |
-0.798232086 |
35 |
308.15 |
0.003245173 |
129.37 |
1.294E-07 |
0.179598704 |
-0.745696801 |
36 |
309.15 |
0.003234676 |
153.85 |
1.539E-07 |
0.213583216 |
-0.670432878 |
37 |
310.15 |
0.003224246 |
176.24 |
1.762E-07 |
0.244666272 |
-0.611425895 |
38 |
311.15 |
0.003213884 |
200.77 |
2.008E-07 |
0.278720197 |
-0.554831560 |
39 |
312.15 |
0.003203588 |
223.43 |
2.234E-07 |
0.310178082 |
-0.508388893 |
40 |
313.15 |
0.003193358 |
260.31 |
2.603E-07 |
0.361376971 |
-0.442039527 |
A plot of Log10(vapor pressure (Pa)) versus reciprocal temperature (1/T(K)) for Run 6 gives the following statistical data using an unweighted least squares treatment.
Slope: |
-5.67 x 103 |
Standard error in slope: |
56.9 |
Intercept: |
17.6 |
Standard error in intercept: |
0.185 |
The results obtained indicate the following vapor pressure relationship:
Log10(Vp (Pa)) = -5.67 x 103/temp(K) + 17.6
The above yields a vapor pressure (Pa) at 298.15 K with a common logarithm of -1.35.
Run 7
Vapor Pressure Data
Temperature (ºC) |
Temperature (K) |
Reciprocal Temperature (K-1) |
Mass Difference (µg) |
Mass Difference (kg) |
Vapor Pressure (Pa) |
Log10Vp |
30 |
303.15 |
0.003298697 |
63.24 |
6.324E-08 |
0.087793322 |
-1.056538517 |
31 |
304.15 |
0.003287851 |
74.27 |
7.427E-08 |
0.103105788 |
-0.986716955 |
32 |
305.15 |
0.003277077 |
85.38 |
8.538E-08 |
0.118529314 |
-0.926174228 |
33 |
306.15 |
0.003266373 |
100.89 |
1.009E-07 |
0.140061168 |
-0.853682257 |
34 |
307.15 |
0.003255738 |
117.19 |
1.172E-07 |
0.162689744 |
-0.788639824 |
35 |
308.15 |
0.003245173 |
130.58 |
1.306E-07 |
0.181278494 |
-0.741653714 |
36 |
309.15 |
0.003234676 |
151.69 |
1.517E-07 |
0.210584583 |
-0.676573427 |
37 |
310.15 |
0.003224246 |
168.12 |
1.681E-07 |
0.233393632 |
-0.631910997 |
38 |
311.15 |
0.003213884 |
198.88 |
1.989E-07 |
0.276096393 |
-0.558939267 |
39 |
312.15 |
0.003203588 |
224.62 |
2.246E-07 |
0.311830107 |
-0.506081956 |
40 |
313.15 |
0.003193358 |
257.51 |
2.575E-07 |
0.357489854 |
-0.446736280 |
A plot of Log10(vapor pressure (Pa)) versus reciprocal temperature (1/T(K)) for Run 7 gives the following statistical data using an unweighted least squares treatment.
Slope: |
-5.72 x 103 |
Standard error in slope: |
66.8 |
Intercept: |
17.8 |
Standard error in intercept: |
0.217 |
The results obtained indicate the following vapor pressure relationship:
Log10(Vp (Pa)) = -5.72 x 103/temp(K) + 17.8
The above yields a vapor pressure (Pa) at 298.15 K with a common logarithm of -1.36.
Summary of Results
The values of vapor pressure at 25 °C extrapolated from each graph are summarized in the following table:
Table3.4 – Summary of Vapor Pressure Data
Run |
Log10[Vp(25 ºC)] |
5 |
-1.36 |
6 |
-1.35 |
7 |
-1.36 |
Mean |
-1.36 |
Vapor Pressure |
4.37 x 10-2Pa |
The test item did not change in appearance under the conditions used in the determination.
Discussion
A total of seven runs were completed for the main sequence. Equilibrium with regard to vapor pressure was assessed to have been reached over the final three runs. Thus the final three runs have been used to calculate the definitive vapor pressure value for the test item.
Applicant's summary and conclusion
- Conclusions:
- The vapor pressure of the test item has been determined to be 4.4 x 10-2 Pa at 25 ºC.
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