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EC number: 920-724-9 | CAS number: -
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 07/07/17-20/06/18
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Justification for type of information:
- GLP run to current guidelines.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: vapour pressure balance
- Specific details on test material used for the study:
- Identification: Reaction product of 2,3-epoxypropyl neodecanoate and Benzenesulfonic acid, C10-13-sec-alkyl derivatives
Appearance/Physical state: Brown liquid
Batch: P718261998
Purity: 97.7%
Expiry date: 01 June 2018
Storage conditions: Room temperature in the dark - Key result
- Test no.:
- #1
- Temp.:
- 25 °C
- Vapour pressure:
- <= 0.014 Pa
- Conclusions:
- The vapor pressure of 'Reaction product of 2,3-epoxypropyl neodecanoate and Benzenesulfonic acid, C10-13-sec-alkyl derivatives' has been determined to be ≤1.42 x 10^-2 Pa at 25 °C, using the vapor pressure balance method, designed to be compatible with Method A.4 Vapour Pressure of Commission Regulation (EC) No 440/2008 of 30 May 2008, and Method 104 of the OECD Guidelines for Testing of Chemicals, 23 March 2006.
- Executive summary:
The vapor pressure of 'Reaction product of 2,3-epoxypropyl neodecanoate and Benzenesulfonic acid, C10-13-sec-alkyl derivatives' has been determined to be ≤1.42 x 10-2 Pa at 25 °C, using the vapor pressure balance method, designed to be compatible with Method A.4 Vapour Pressure of Commission Regulation (EC) No 440/2008 of 30 May 2008, and Method 104 of the OECD Guidelines for Testing of Chemicals, 23 March 2006.
Reference
Recorded temperatures, mass differences and the resulting calculated values of vapor pressure are shown below.
Table 1: Results for Run 8
Temperature (ºC) |
Temperature (K) |
Reciprocal Temperature (K-1) |
Mass Difference (μg) |
Mass Difference (kg) |
Vapor Pressure (Pa) |
Log10Vp |
80 |
353.15 |
0.002832 |
35.64 |
3.564e-08 |
0.04948 |
-1.30557 |
81 |
354.15 |
0.002824 |
34.35 |
3.435e-08 |
0.04769 |
-1.32157 |
82 |
355.15 |
0.002816 |
36.74 |
3.674e-08 |
0.05100 |
-1.29243 |
83 |
356.15 |
0.002808 |
37.04 |
3.704e-08 |
0.05142 |
-1.28887 |
84 |
357.15 |
0.002800 |
35.64 |
3.564e-08 |
0.04948 |
-1.30557 |
85 |
358.15 |
0.002792 |
35.54 |
3.554e-08 |
0.04934 |
-1.30680 |
86 |
359.15 |
0.002784 |
28.85 |
2.885e-08 |
0.04005 |
-1.39740 |
87 |
360.15 |
0.002777 |
36.34 |
3.634e-08 |
0.05045 |
-1.29714 |
88 |
361.15 |
0.002769 |
37.94 |
3.794e-08 |
0.05267 |
-1.27844 |
89 |
362.15 |
0.002761 |
36.44 |
3.644e-08 |
0.05059 |
-1.29594 |
90 |
363.15 |
0.002754 |
36.34 |
3.634e-08 |
0.05045 |
-1.29714 |
No statistical analysis is given due to the nature of the plot of Log10 Vp versus K-1.
Table 2: Results for Run 9
Temperature (ºC) |
Temperature (K) |
Reciprocal Temperature (K-1) |
Mass Difference (μg) |
Mass Difference (kg) |
Vapor Pressure (Pa) |
Log10Vp |
80 |
353.15 |
0.002832 |
34.15 |
3.415e-08 |
0.04741 |
-1.32413 |
81 |
354.15 |
0.002824 |
35.74 |
3.574e-08 |
0.04962 |
-1.30434 |
82 |
355.15 |
0.002816 |
29.95 |
2.995e-08 |
0.04158 |
-1.38112 |
83 |
356.15 |
0.002808 |
34.65 |
3.465e-08 |
0.04810 |
-1.31785 |
84 |
357.15 |
0.002800 |
37.74 |
3.774e-08 |
0.05239 |
-1.28075 |
85 |
358.15 |
0.002792 |
34.85 |
3.485e-08 |
0.04838 |
-1.31533 |
86 |
359.15 |
0.002784 |
35.24 |
3.524e-08 |
0.04892 |
-1.31051 |
87 |
360.15 |
0.002777 |
33.55 |
3.355e-08 |
0.04658 |
-1.33180 |
88 |
361.15 |
0.002769 |
31.35 |
3.135e-08 |
0.04352 |
-1.36131 |
89 |
362.15 |
0.002761 |
37.54 |
3.754e-08 |
0.05212 |
-1.28300 |
90 |
363.15 |
0.002754 |
35.84 |
3.584e-08 |
0.04976 |
-1.30312 |
No statistical analysis is given due to the nature of this plot.
Table 3: Results for Run 10
Temperature (ºC) |
Temperature (K) |
Reciprocal Temperature (K-1) |
Mass Difference (μg) |
Mass Difference (kg) |
Vapor Pressure (Pa) |
Log10Vp |
80 |
353.15 |
0.002832 |
33.15 |
3.315e-08 |
0.04602 |
-1.33705 |
81 |
354.15 |
0.002824 |
31.95 |
3.195e-08 |
0.04435 |
-1.35311 |
82 |
355.15 |
0.002816 |
35.24 |
3.524e-08 |
0.04892 |
-1.31051 |
83 |
356.15 |
0.002808 |
34.85 |
3.485e-08 |
0.04838 |
-1.31533 |
84 |
357.15 |
0.002800 |
28.95 |
2.895e-08 |
0.04019 |
-1.39588 |
85 |
358.15 |
0.002792 |
32.75 |
3.275e-08 |
0.04547 |
-1.34228 |
86 |
359.15 |
0.002784 |
28.56 |
2.856e-08 |
0.03965 |
-1.40176 |
87 |
360.15 |
0.002777 |
33.85 |
3.385e-08 |
0.04699 |
-1.32799 |
88 |
361.15 |
0.002769 |
34.45 |
3.445e-08 |
0.04783 |
-1.32030 |
89 |
362.15 |
0.002761 |
33.25 |
3.325e-08 |
0.04616 |
-1.33573 |
90 |
363.15 |
0.002754 |
34.45 |
3.445e-08 |
0.04783 |
-1.32030 |
No statistical analysis is given due to the nature of the plot of Log10Vp versus K-1.
The test item did not change in appearance under the conditions used in these determinations and no statistical analyses were performed because the balance readings were too low and variable for a line of best fit to have any meaning. Instead it was considered more appropriate to impose a regression slope on a chosen data point to provide an estimate of the maximum value for the vapor pressure at 25 ºC. Run 10 was chosen because the sample had been under vacuum for the longest time so degassing would have been the most complete and the reading at 82 ºC (355.15 K) was chosen because this is the data point which gives the highest estimated vapor pressure at any given temperature when a slope of –1000 K is imposed upon it.
The value of –1000 K is an in-house value and is the shallowest slope observed whilst determining the vapor pressure on a wide range of samples using the vapor pressure balance method. Extrapolation to 25 ºC gave a vapor pressure of 1.42 x 10-2 Pa which has been taken as a maximum for this material.
Description of key information
The vapor pressure of 'Reaction product of 2,3-epoxypropyl neodecanoate and Benzenesulfonic acid, C10-13-sec-alkyl derivatives' has been determined to be ≤1.42 x 10-2 Pa at 25 °C, using the vapor pressure balance method, designed to be compatible with Method A.4 Vapour Pressure of Commission Regulation (EC) No 440/2008 of 30 May 2008, and Method 104 of the OECD Guidelines for Testing of Chemicals, 23 March 2006.
Key value for chemical safety assessment
- Vapour pressure:
- 0.014 Pa
- at the temperature of:
- 25 °C
Additional information
The vapour pressure (above) is taken as a maximum value for this material.
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