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EC number: 204-101-2 | CAS number: 115-70-8
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:
- 17 Jun - 13 Jul 2011
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: vapour pressure balance
- Temp.:
- 25 °C
- Vapour pressure:
- 0.29 Pa
- Remarks on result:
- other: No apparent change in the appearance of the test item was noted over the duration of the test.
- Transition / decomposition:
- no
Reference
The results from runs 2 to 6 are shown in the following tables:
Run 2:
Temperature (°C) |
Temperature (K) |
Reciprocal Temperature (K-1) |
Mass Difference (mg) |
Mass Difference (kg) |
Vapour pressure (Pa) |
log10Vp |
10 |
283.15 |
0.003531697 |
37.67 |
3.767E-8 |
0.052295611 |
-1.281534759 |
11 |
284.15 |
0.003519268 |
40.80 |
4.080E-8 |
0.056640853 |
-1.246870216 |
12 |
285.15 |
0.003506926 |
46.88 |
4.688E-8 |
0.065081451 |
-1.186542776 |
13 |
286.15 |
0.003494671 |
52.77 |
5.277E-8 |
0.073258280 |
-1.135143285 |
14 |
287.15 |
0.003482500 |
58.54 |
5.854E-8 |
0.081268518 |
-1.090077661 |
15 |
288.15 |
0.003470415 |
67.65 |
6.765E-8 |
0.093915532 |
-1.027262578 |
16 |
289.15 |
0.003458413 |
74.63 |
7.463E-8 |
0.103605560 |
-0.984616937 |
17 |
290.15 |
0.003446493 |
83.10 |
8.310E-8 |
0.115364090 |
-0.937929355 |
18 |
291.15 |
0.003434656 |
93.21 |
9.321E-8 |
0.129399360 |
-0.888067871 |
19 |
292.15 |
0.003422899 |
106.70 |
1.067E-7 |
0.148126936 |
-0.829365959 |
20 |
293.15 |
0.003411223 |
132.63 |
1.326E-7 |
0.184124420 |
-0.734888609 |
Run 3:
Temperature (°C) |
Temperature (K) |
Reciprocal Temperature (K-1) |
Mass Difference (mg) |
Mass Difference (kg) |
Vapour pressure (Pa) |
log10Vp |
10 |
283.15 |
0.003531697 |
36.46 |
3.646E-8 |
0.050615821 |
-1.295713714 |
11 |
284.15 |
0.003519268 |
38.06 |
3.806E-8 |
0.052837031 |
-1.277061595 |
12 |
285.15 |
0.003506926 |
44.39 |
4.439E-8 |
0.061624693 |
-1.210245234 |
13 |
286.15 |
0.003494671 |
49.50 |
4.950E-8 |
0.068718682 |
-1.162925180 |
14 |
287.15 |
0.003482500 |
55.49 |
5.549E-8 |
0.077034336 |
-1.113315654 |
15 |
288.15 |
0.003470415 |
62.76 |
6.276E-8 |
0.087126959 |
-1.059847444 |
16 |
289.15 |
0.003458413 |
71.70 |
7.170E-8 |
0.099537969 |
-1.002011223 |
17 |
290.15 |
0.003446493 |
89.81 |
8.981E-8 |
0.124679289 |
-0.904205682 |
18 |
291.15 |
0.003434656 |
93.14 |
9.314E-8 |
0.129302182 |
-0.888394145 |
19 |
292.15 |
0.003422899 |
106.40 |
1.064E-7 |
0.147710460 |
-0.830588751 |
20 |
293.15 |
0.003411223 |
123.47 |
1.235E-7 |
0.171407993 |
-0.765968931 |
Run 4:
Temperature (°C) |
Temperature (K) |
Reciprocal Temperature (K-1) |
Mass Difference (mg) |
Mass Difference (kg) |
Vapour pressure (Pa) |
log10Vp |
10 |
283.15 |
0.003531697 |
32.45 |
3.245E-8 |
0.045048914 |
-1.346315678 |
11 |
284.15 |
0.003519268 |
36.05 |
3.605E-8 |
0.050046636 |
-1.300625110 |
12 |
285.15 |
0.003506926 |
39.23 |
3.923E-8 |
0.054461291 |
-1.263912071 |
13 |
286.15 |
0.003494671 |
44.07 |
4.407E-8 |
0.061180451 |
-1.213387328 |
14 |
287.15 |
0.003482500 |
48.49 |
4.849E-8 |
0.067316543 |
-1.171878195 |
15 |
288.15 |
0.003470415 |
57.32 |
5.732E-8 |
0.079574845 |
-1.099224197 |
16 |
289.15 |
0.003458413 |
64.91 |
6.491E-8 |
0.090111710 |
-1.045218770 |
17 |
290.15 |
0.003446493 |
76.17 |
7.617E-8 |
0.105743475 |
-0.975746423 |
18 |
291.15 |
0.003434656 |
85.62 |
8.562E-8 |
0.118862496 |
-0.924955155 |
19 |
292.15 |
0.003422899 |
99.18 |
9.918E-8 |
0.137687250 |
-0.861106275 |
20 |
293.15 |
0.003411223 |
114.53 |
1.145E-7 |
0.158996982 |
-0.798611118 |
Run 5:
Temperature (°C) |
Temperature (K) |
Reciprocal Temperature (K-1) |
Mass Difference (mg) |
Mass Difference (kg) |
Vapour pressure (Pa) |
log10Vp |
10 |
283.15 |
0.003531697 |
30.83 |
3.083E-8 |
0.042799939 |
-1.368556854 |
11 |
284.15 |
0.003519268 |
32.92 |
3.292E-8 |
0.045701394 |
-1.340070552 |
12 |
285.15 |
0.003506926 |
37.63 |
3.763E-8 |
0.052240081 |
-1.281996160 |
13 |
286.15 |
0.003494671 |
43.25 |
4.325E-8 |
0.060042081 |
-1.221544267 |
14 |
287.15 |
0.003482500 |
46.57 |
4.657E-8 |
0.064651091 |
-1.189424141 |
15 |
288.15 |
0.003470415 |
56.07 |
5.607E-8 |
0.077839525 |
-1.108799823 |
16 |
289.15 |
0.003458413 |
62.13 |
6.213E-8 |
0.086252358 |
-1.064229025 |
17 |
290.15 |
0.003446493 |
71.41 |
7.141E-8 |
0.099135375 |
-1.003771346 |
18 |
291.15 |
0.003434656 |
81.02 |
8.102E-8 |
0.112476517 |
-0.948938140 |
19 |
292.15 |
0.003422899 |
105.70 |
1.057E-7 |
0.146738680 |
-0.833455391 |
20 |
293.15 |
0.003411223 |
109.54 |
1.095E-7 |
0.152069584 |
-0.817957642 |
Run 6:
Temperature (°C) |
Temperature (K) |
Reciprocal Temperature (K-1) |
Mass Difference (mg) |
Mass Difference (kg) |
Vapour pressure (Pa) |
log10Vp |
10 |
283.15 |
0.003531697 |
28.16 |
2.816E-8 |
0.039093295 |
-1.407897728 |
11 |
284.15 |
0.003519268 |
31.95 |
3.195E-8 |
0.044354786 |
-1.353059516 |
12 |
285.15 |
0.003506926 |
34.81 |
3.481E-8 |
0.048325198 |
-1.315826355 |
13 |
286.15 |
0.003494671 |
40.96 |
4.096E-8 |
0.056862974 |
-1.245170431 |
14 |
287.15 |
0.003482500 |
46.61 |
4.661E-8 |
0.064706621 |
-1.189051276 |
15 |
288.15 |
0.003470415 |
53.18 |
5.318E-8 |
0.073827465 |
-1.131782046 |
16 |
289.15 |
0.003458413 |
61.48 |
6.148E-8 |
0.085349991 |
-1.068796520 |
17 |
290.15 |
0.003446493 |
67.38 |
6.738E-8 |
0.093540703 |
-1.028999372 |
18 |
291.15 |
0.003434656 |
79.34 |
7.934E-8 |
0.110144247 |
-0.958038183 |
19 |
292.15 |
0.003422899 |
95.48 |
9.548E-8 |
0.132550702 |
-0.877617968 |
20 |
293.15 |
0.003411223 |
110.17 |
1.102E-7 |
0.152944185 |
-0.815467029 |
Statistical data using an unweighted least squares method and the common logarithm of the vapour pressure at 25 °C (298 K) generated from the runs are shown in the following table:
Run |
Slope |
SD of Slope |
Intercept |
SD of Intercept |
log10Vp at 25 °C |
1 |
n/a |
n/a |
n/a |
n/a |
n/a |
2 |
-4374 |
122 |
14.149 |
0.422 |
-0.520 |
3 |
-4548 |
135 |
14.738 |
0.470 |
-0.515 |
4 |
-4612 |
129 |
14.915 |
0.448 |
-0.552 |
5 |
-4781 |
172 |
15.486 |
0.597 |
-0.549 |
6 |
-4895 |
111 |
15.863 |
0.384 |
-0.555 |
SD - standard deviation
Mean log10Vp at 25 °C: -0.538
Description of key information
0.29 Pa at 25 °C
Key value for chemical safety assessment
- Vapour pressure:
- 0.29 Pa
- at the temperature of:
- 25 °C
Additional information
Vapour pressure balance, OECD 104. Handbook data is disregarded due to inconsistency.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
