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EC number: 273-105-4 | CAS number: 68937-98-4 This substance is identified by SDA Substance Name: C14-C18 and C12-C20 unsaturated alkyl alkene and C14-C18 and C12-C20 unsaturated alkyl hydroxy sulfonic acid sodium salt and SDA Reporting Number: 03-059-04.
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:
- 16 March 2018 - 20 March 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: vapour pressure balance
- Specific details on test material used for the study:
- Appearance/Physical state: White powder
Lot No: J1624Z
Purity: 94.9%
Storage conditions: Room temperature, in the dark - Key result
- Temp.:
- ca. 25 °C
- Vapour pressure:
- < 0.004 Pa
- Remarks on result:
- other: See tables 1-3
- Conclusions:
- The vapor pressure of the test item has been determined to be less than 4.2 x 10-3 Pa at 25 ºC.
Reference
Table 1 – Vapor Pressure Data :Run 8
Temperature (ºC) |
Temperature (K) |
Reciprocal Temperature (K-1) |
Mass Difference (μg) |
Mass Difference (kg) |
Vapor Pressure (Pa) |
Log10Vp |
170 |
443.15 |
0.00226 |
18.47 |
1.847e-08 |
0.02564 |
-1.59108 |
171 |
444.15 |
0.00225 |
29.65 |
2.965e-08 |
0.04116 |
-1.38552 |
172 |
445.15 |
0.00225 |
37.74 |
3.774e-08 |
0.05239 |
-1.28075 |
173 |
446.15 |
0.00224 |
13.28 |
1.328e-08 |
0.01844 |
-1.73424 |
174 |
447.15 |
0.00224 |
26.26 |
2.626e-08 |
0.03646 |
-1.43818 |
175 |
448.15 |
0.00223 |
30.55 |
3.055e-08 |
0.04241 |
-1.37253 |
176 |
449.15 |
0.00223 |
21.97 |
2.197e-08 |
0.03050 |
-1.51570 |
177 |
450.15 |
0.00222 |
27.56 |
2.756e-08 |
0.03826 |
-1.41726 |
178 |
451.15 |
0.00222 |
34.15 |
3.415e-08 |
0.04741 |
-1.32413 |
179 |
452.15 |
0.00221 |
24.66 |
2.466e-08 |
0.03423 |
-1.46559 |
180 |
453.15 |
0.00221 |
29.35 |
2.935e-08 |
0.04075 |
-1.38987 |
Table 2 – Vapor Pressure Data:Run 9
Temperature (ºC) |
Temperature (K) |
Reciprocal Temperature (K-1) |
Mass Difference (μg) |
Mass Difference (kg) |
Vapor Pressure (Pa) |
Log10Vp |
170 |
443.15 |
0.00226 |
18.77 |
1.877e-08 |
0.02606 |
-1.58403 |
171 |
444.15 |
0.00225 |
32.95 |
3.295e-08 |
0.04574 |
-1.33970 |
172 |
445.15 |
0.00225 |
24.96 |
2.496e-08 |
0.03465 |
-1.46030 |
173 |
446.15 |
0.00224 |
25.66 |
2.566e-08 |
0.03562 |
-1.44831 |
174 |
447.15 |
0.00224 |
26.86 |
2.686e-08 |
0.03729 |
-1.42841 |
175 |
448.15 |
0.00223 |
20.67 |
2.067e-08 |
0.02870 |
-1.54212 |
176 |
449.15 |
0.00223 |
27.66 |
2.766e-08 |
0.03840 |
-1.41567 |
177 |
450.15 |
0.00222 |
20.57 |
2.057e-08 |
0.02856 |
-1.54424 |
178 |
451.15 |
0.00222 |
29.75 |
2.975e-08 |
0.04130 |
-1.38405 |
179 |
452.15 |
0.00221 |
19.37 |
1.937e-08 |
0.02689 |
-1.57041 |
180 |
453.15 |
0.00221 |
21.87 |
2.187e-08 |
0.03036 |
-1.51770 |
Table 3 – Vapor Pressure Data:Run 10
Temperature (ºC) |
Temperature (K) |
Reciprocal Temperature (K-1) |
Mass Difference (μg) |
Mass Difference (kg) |
Vapor Pressure (Pa) |
Log10Vp |
170 |
443.15 |
0.00226 |
30.75 |
3.075e-08 |
0.04269 |
-1.36967 |
171 |
444.15 |
0.00225 |
28.46 |
2.846e-08 |
0.03951 |
-1.40329 |
172 |
445.15 |
0.00225 |
32.65 |
3.265e-08 |
0.04533 |
-1.34361 |
173 |
446.15 |
0.00224 |
31.85 |
3.185e-08 |
0.04422 |
-1.35438 |
174 |
447.15 |
0.00224 |
39.14 |
3.914e-08 |
0.05434 |
-1.26488 |
175 |
448.15 |
0.00223 |
32.85 |
3.285e-08 |
0.04560 |
-1.34104 |
176 |
449.15 |
0.00223 |
22.46 |
2.246e-08 |
0.03118 |
-1.50612 |
177 |
450.15 |
0.00222 |
26.86 |
2.686e-08 |
0.03729 |
-1.42841 |
178 |
451.15 |
0.00222 |
27.86 |
2.786e-08 |
0.03868 |
-1.41251 |
179 |
452.15 |
0.00221 |
33.35 |
3.335e-08 |
0.04630 |
-1.33442 |
180 |
453.15 |
0.00221 |
13.88 |
1.388e-08 |
0.01927 |
-1.71512 |
Description of key information
The vapor pressure of the test item has been determined to be less than 4.2 x 10-3 Pa at 25 ºC.
Key value for chemical safety assessment
Additional information
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, 23 March 2006.
The vapor pressure was determined using a vapor pressure balance. The temperature of the sample was controlled electronically. The mass and temperature readings were recorded automatically into a computer file.
A preliminary run was undertaken over the temperature range 25 to 180 °C to provide information for a suitable temperature range for the determination.
A sequence of runs was started after a sample of test item had been under vacuum for approximately 45.25 hours. Temperature and pressure readings were taken between 170 and 180 ºC with a one hour dwell at 170 ºC between runs.
The test item did not change in appearance under the conditions used in the determination.
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