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Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
11 February 2017 to 15 February 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report date:
2017

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Version / remarks:
The determination was carried out using a procedure 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.
GLP compliance:
yes (incl. QA statement)
Type of method:
other: Vapor pressure balance

Test material

Constituent 1
Chemical structure
Reference substance name:
2-ethylhexyl 12-hydroxyoctadecanoate
EC Number:
249-793-7
EC Name:
2-ethylhexyl 12-hydroxyoctadecanoate
Cas Number:
29710-25-6
Molecular formula:
C26H52O3
IUPAC Name:
2-ethylhexyl 12-hydroxyoctadecanoate

Results and discussion

Vapour pressureopen allclose all
Key result
Test no.:
#1
Temp.:
ca. 25 °C
Vapour pressure:
ca. 0.128 Pa
Key result
Test no.:
#2
Temp.:
ca. 70 °C
Vapour pressure:
ca. 0.15 Pa
Key result
Test no.:
#3
Temp.:
ca. 140 °C
Vapour pressure:
ca. 2.3 Pa

Any other information on results incl. tables

The recorded temperatures and the calculated vapor pressure values for the preliminary run are shown in the following tables.

Preliminary Run Vapor Pressure Data:

Vapour Pressure (Pa) Temperature (K) Temperature (ºC)
20 293.15 0.09862172
21 294.15 0.077547991
22 295.15 0.07439665
23 296.15 0.073174984
24 297.15 0.073619226
25 298.15 0.072994511
26 299.15 0.073827465
27 300.15 0.07450771
28 301.15 0.073882995
29 302.15 0.075118543
30 303.15 0.076062557
31 304.15 0.076770568
32 305.15 0.078811304
33 306.15 0.079560963
34 307.15 0.083975617
35 308.15 0.084364329
36 309.15 0.084739158
37 310.15 0.087376845
38 311.15 0.090958546
39 312.15 0.094790133
40 313.15 0.096580984
41 314.15 0.089153813
42 315.15 0.092541158
43 316.15 0.095970151
44 317.15 0.095664735
45 318.15 0.095775795
46 319.15 0.098191361
47 320.15 0.100107154
48 321.15 0.102453307
49 322.15 0.102508838
50 323.15 0.103425087
51 324.15 0.102592133
52 325.15 0.101606471
53 326.15 0.086405066
54 327.15 0.087918265
55 328.15 0.085988589
56 329.15 0.084267151
57 330.15 0.083267607
58 331.15 0.080560507
59 332.15 0.082281945
60 333.15 0.081601699
61 334.15 0.079838614
62 335.15 0.079908027
63 336.15 0.079449902
64 337.15 0.07954708
65 338.15 0.076742803
66 339.15 0.077547991
67 340.15 0.076465151
68 341.15 0.076548447
69 342.15 0.076062557
70 343.15 0.075687728
71 344.15 0.074021821
72 345.15 0.073744169
73 346.15 0.072383678
74 347.15 0.074271707
75 348.15 0.072855685
76 349.15 0.072064379
77 350.15 0.070912127
78 351.15 0.070148586
79 352.15 0.05494718
80 353.15 0.051657013
81 354.15 0.051282184
82 355.15 0.051448775
83 356.15 0.053350686
84 357.15 0.050296522
85 358.15 0.047672718
86 359.15 0.048838853
87 360.15 0.051240536
88 361.15 0.054544586
89 362.15 0.055558013
90 363.15 0.058237348
98 371.15 0.074007938
99 372.15 0.079463785
100 373.15 0.083739614
101 374.15 0.087668379
102 375.15 0.094220948
103 376.15 0.099732325
104 377.15 0.107964685
105 378.15 0.118098955
106 379.15 0.122222076
107 380.15 0.133522481
108 381.15 0.145697488
109 382.15 0.160468534
110 383.15 0.175017459
111 384.15 0.189913448
112 385.15 0.205281444
113 386.15 0.228548618
114 387.15 0.24860892
115 388.15 0.272958934
116 389.15 0.301626424
117 390.15 0.324352178
118 391.15 0.351159405
119 392.15 0.376078604
120 393.15 0.433746767
121 394.15 0.469355538
122 395.15 0.511766765
123 396.15 0.574738066
124 397.15 0.609291763
125 398.15 0.662156559
126 399.15 0.730472647
127 400.15 0.82130625
128 401.15 0.891899077
129 402.15 0.954620492
130 403.15 1.030891288
131 404.15 1.10351097
132 405.15 1.263424201
133 406.15 1.361809918
134 407.15 1.504203356
135 408.15 1.609030582
136 409.15 1.75196544
137 410.15 1.92714949
138 411.15 2.060658088

The direct values of the vapor pressure at 25 °C are shown in the following table:

Vapor Pressure Data at 25 °C:

Run Mass Difference (μg) Vapor Pressure (Pa)
1 135.97 0.1887612
2 123.19 0.17101928
3 101.73 0.1412273
4 94.17 0.13073209
5 88.13 0.12234702
6 82.52 0.1145589
7 78.1 0.10842281
8 73.66 0.10225895
9 72.85 0.10113446
10 68.64 0.09528991

The direct values of the vapor pressure at 70 °C are shown in the following table:

Vapor Pressure Data at 70 °C:  

Run Mass Difference (μg) Vapor Pressure (Pa)
1 132.88 0.18447148
2 124.6 0.17297672
3 123.05 0.17082493
4 117.63 0.16330058
5 108.84 0.15109781
6 106.93 0.14844624
7 91.89 0.12756686
8 96.99 0.13464697
9 91.03 0.12637296
10 87.53 0.12151407

The direct values of the vapor pressure at 140 °C are shown in the following table:

Vapor Pressure Data at 140 °C:  

Run Mass Difference (μg) Vapor Pressure (Pa)
1 1687.85 2.3431682
2 1653.03 2.2948291
3 1745.95 2.4238259
4 1720.83 2.3889529
5 1629.57 2.2622607
6 1677.06 2.3281889
7 1615.66 2.24295
8 1619.18 2.2478367
9 1593.69 2.21245
10 1602.32 2.2244307

Applicant's summary and conclusion

Conclusions:
The vapor pressure of the test item has been determined at three temperatures: 0.128 Pa at 25 °C, 0.150 Pa at 70 °C, and 2.30 Pa at 140 °C.
Executive summary:

The vapor pressure of the test item has been determined at three temperatures and the results are shown in the following table. The determination was carried out using a procedure 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.

Temperature (°C) Temperature (K) Vapor Pressure (Pa)
25 298 70
70 343 0.15
140 413 2.3