Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 274-152-3 | CAS number: 69847-45-6
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:
- from 2017-04-07 to 2017-04-18
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- 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: Knudsen cell
- Key result
- Remarks on result:
- not determinable
- Conclusions:
- The vapour pressure determination of the test item was not feasible, because there was no suitable thermally stable range for determination (tests of effusion method were confirmed by DSC measurement).
- Executive summary:
A study was performed according to OECD TG 104 and Regulation (EC) No 440/2008 method A.4 in order to determine the vapour pressure of the test item by using the effusion method. The measurements by effusion method were performed twice since in the first test no thermally stable range could be found for vapour pressure determination. Since also in the second measurement the same problems appeared, the DSC method (differential scanning calorimeter) was used in order to check the thermally stability of the test item. The results of the DSC measurement confirmed the first results. The vapour pressure of the test item was not feasible because there was no suitable thermally stable range for determination.
Reference
Two vapour pressure measurements were performed in the temperature range of 220 to 300 °C and 100 to 240 °C, respectively. The measured vapour pressure values together with the measured temperatures are listed in Table 1 and 2.
Table 1: Results of the Effusion method (07 April 2017)
Stage No. |
Temperature, °C |
Δm/Δt, mg/min |
Vapour pressure, Pa |
1 |
220 |
2.9057E-03 |
1.1450E+00 |
2 |
230 |
5.2709E-04 |
2.0979E-01 |
3 |
240 |
2.7604E-04 |
1.1096E-01 |
4 |
250 |
3.0917E-04 |
1.2548E-01 |
5 |
260 |
4.4603E-04 |
1.8275E-01 |
6 |
270 |
5.5408E-04 |
2.2913E-01 |
7 |
280 |
5.7454E-04 |
2.3977E-01 |
8 |
290 |
4.1368E-04 |
1.7420E-01 |
9 |
300 |
2.5418E-04 |
1.0798E-01 |
Table 2: Results of the effusion method (13 April 2017)
Stage No. |
Temperature, °C |
Δm/Δt, mg/min |
Vapour pressure, Pa |
1 |
100 |
7.7124E-05 |
2.6435E-02 |
2 |
110 |
5.3505E-05 |
1.8584E-02 |
3 |
120 |
3.5226E-05 |
1.2394E-02 |
4 |
130 |
3.0380E-05 |
1.0824E-02 |
5 |
140 |
3.6494E-05 |
1.3162E-02 |
6 |
150 |
3.3792E-05 |
1.2334E-02 |
7 |
160 |
4.2198E-05 |
1.5584E-02 |
8 |
170 |
1.0516E-04 |
3.9282E-02 |
9 |
180 |
6.1731E-05 |
2.3318E-02 |
10 |
190 |
5.7197E-05 |
2.1842E-02 |
11 |
200 |
1.2359E-04 |
4.7701E-02 |
12 |
210 |
8.2861E-04 |
3.2318E-01 |
13 |
220 |
1.7255E-03 |
6.7992E-01 |
14 |
230 |
8.4765E-04 |
3.3738E-01 |
15 |
240 |
2.7956E-04 |
1.1237E-01 |
Since neither the measurement 1 of 07 April nor the measurement 2 of 13 April produced any feasible result, a DSC measurement was performed from room temperature to 400 °C to check the thermal stability of the test item. The results of DSC measurement confirmed that there was no thermally stable range suitable for vapour pressure determination of the test item.
Description of key information
The vapour pressure determination of the test item was not feasible, because there was no suitable thermally stable range for determination (tests of effusion method were confirmed by DSC measurement).
Key value for chemical safety assessment
Additional information
A study was performed according to OECD TG 104 and Regulation (EC) No 440/2008 method A.4 in order to determine the vapour pressure of the test item by using the effusion method. The measurements by effusion method were performed twice since in the first test no thermally stable range could be found for vapour pressure determination. As in the second measurement the same problems appeared, the DSC method (differential scanning calorimeter) was used in order to check the thermally stability of the test item. The results of the DSC measurement confirmed the first results. The vapour pressure of the test item was not feasible because there was no suitable thermally stable range for determination (reference 4.6-1).
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.
