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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 914-461-9 | CAS number: -
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 28 Feb to 07 March 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Guideline study (EU A.4; OECD 104)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 012
- Report date:
- 2012
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- 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
Test material
- Reference substance name:
- Montan waxes, type O
- IUPAC Name:
- Montan waxes, type O
- Details on test material:
- Test item: Licowax O Flakes
Constituent 1
Results and discussion
Vapour pressure
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
Any other information on results incl. tables
The vapour pressure was measured in the temperature range of 22 °C to 144 °C. Above 66 °C a
vapour pressure could be measured. The measured vapour pressures at the corresponding
temperatures are listed in the following table:
Temperature / °C |
Vapour pressure / hPa |
66.2 |
1.3 x 10-5 |
70.4 |
1.8 x 10-5 |
74.9 |
2.6 x 10-5 |
79.3 |
3.7 x 10-5 |
82.8 |
4.0 x 10-5 |
86.6 |
4.5 x 10-5 |
90.6 |
6.7 x 10-5 |
95.7 |
7.5 x 10-5 |
100.7 |
8.4 x 10-5 |
105.6 |
1.1 x 10-4 |
110.4 |
1.7 x 10-4 |
115.7 |
3.1 x 10-4 |
120.8 |
4.4 x 10-4 |
125.6 |
6.3 x 10-4 |
130.6 |
7.9 x 10-4 |
134.8 |
1.0 x 10-3 |
140.1 |
1.3 x 10-3 |
144.4 |
1.5 x 10-3 |
The values for 20, 25 and 50 °C are calculated from the measurement curve, using the Antoine constants A, B and C shown below.
T / °C |
p/ hPa |
log (p/hPa) = A + B/(C+T [°C]) |
20 |
2.02E-07 |
A = 6.22240 |
25 |
3.22E-07 |
B = -3786.58 |
50 |
3.20E-06 |
C = 273.15 |
Final Results
The following vapour pressure values for the test item were extrapolated from the experimental data:
T /°C |
p/hPa |
p / Pa |
20 |
2.0 x 10-7 |
2.0 x 10 -5 |
25 |
3.3 x 10-7 |
3.3 x 10-5 |
50 |
3.2 x 10 -6 |
3.2 x 10-4 |
Applicant's summary and conclusion
- Conclusions:
- The vapour pressure of the test substance is 0.000033 Pa at 25 °C.
- Executive summary:
The vapour pressure of the test substance was determined in a guideline study (EU A.4; OECD TG 104) with a vapour pressure balance (effusion method). The vapour pressure is 0.000033 Pa at 25 °C.
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.
