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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 214-302-7 | CAS number: 1120-24-7
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:
- August 02nd, 2011 - August 11th, 2011
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- According to the OECD Guideline 104 and EU method A.4
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- dynamic method
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0.072 hPa
- Temp.:
- 25 °C
- Vapour pressure:
- 0.11 hPa
- Temp.:
- 50 °C
- Vapour pressure:
- 0.61 hPa
- Conclusions:
- The vapour pressure of the test substance was 7.2 Pa at 20°C and 11 Pa at 25°C.
- Executive summary:
The vapour pressure of the test item was determined according to the European Commission Regulation (EC) No. 440/2008, Part A: Methods for the determination of physico-chemical properties A.4. Vapour pressure: Vapour pressure (dynamic method) and OECD test guideline OECD 104 (Vapour pressure).
The Antoine constants from the regression of the data from the dynamic method were used to calculate the vapour pressure for 20, 25 and 50 °C:
T / °C
p / hPa
p / Pa
20
7.2× 10-2
7.2
25
1.1× 10-1
11
50
6.1× 10-1
61
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 25/3/2010-29/7/2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- According to the OECD Guideline 104 and EU method A.4
- 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: by loss of weight or by trapping vaporisate
- Temp.:
- 20 °C
- Vapour pressure:
- 6.4 Pa
- Conclusions:
- The vapour pressure of the test substance at 20ºC (293K) was 6.40 Pa = 4.80x10^-2 mmHg.
- Executive summary:
The test was perfomanced according to the OECD Guideline 104 and EU method A.4. The isothermal thermogravimetric effusion method was chosen for the determination of the vapours pressure of the test substance. The vapour pressure of the test substance at 20ºC (293K) was 6.40 Pa = 4.80x10^-2 mmHg.
Referenceopen allclose all
Vapour Pressure (Dynamic Method):
The vapour pressure was measured with the dynamic method in the temperature range of 103 °C to 227 °C.The measured vapour pressures at the corresponding temperatures are listed in the following table:
Temperature / °C |
Vapour pressure / hPa |
102.5 |
9.8 |
123.0 |
29.8 |
135.3 |
50.3 |
152.4 |
99.6 |
163.8 |
149.8 |
185.0 |
300.3 |
203.6 |
499.3 |
216.6 |
701.1 |
226.5 |
897.0 |
172.3 |
199.0 |
114.2 |
19.1 |
The Antoine constants from the regression of the data from the dynamic method were used to calculate the vapour pressure for 20, 25 and 50 °C:
T / °C |
p / hPa |
p / Pa |
20 |
7.2× 10-2 |
7.2 |
25 |
1.1× 10-1 |
11 |
50 |
6.1× 10-1 |
61 |
| Temperature (ºC) | Weight loss (µg/min) | VT (g/cm^2/h) | log VT |
| 40 | 21.46 | 2.56x10^-3 | -2.59 |
| 20.58 | 2.46x10^-3 | -2.61 | |
| 50 | 50.47 | 6.02x10^-3 | -2.22 |
| 49.68 | 5.93x10^-3 | -2.23 | |
| 60 | 105.4 | 1.26x^10 -2 | -1.90 |
| 104.4 | 1.25x10^-2 | -1.90 |
The plot of the log vT of the test substance as function of the reciprocal temperatures showed a coefficient of correlation (r) of > 0.99. Extrapolation of the curve to 20°C resulted in a value of -3.39 for the logVT, 20 of the test substance. Fitting this value in the regression curve, a vapour pressure of 6.40 Pa = 4.80 x 10.2mm Hg was obtained.
Description of key information
Vapour pressure of C10-DMA: 6.4 to 7.2 Pa at 20 °C
Key value for chemical safety assessment
- Vapour pressure:
- 6.8 Pa
- at the temperature of:
- 20 °C
Additional information
Results from two reliable studies are available:
The test performed by NOTOX (2010) according to the OECD Guideline 104 and EU method A.4 applied the isothermal thermogravimetric effusion method. A vapour pressure for C10-DMA at 20ºC (293K) of 6.40 Pa resulted.
Siemens (2011) determined the vapour pressure of C10-DMA according to EU method A.4. Vapour pressure: Vapour pressure (dynamic method) and OECD test guideline OECD 104 (Vapour pressure), with the following results:
7.2 Pa at 20 °C,
11 Pa at 25 °C, and
61 Pa at 50 °C.
The key value for the vapour pressure at 20 °C is given as the arithmetic mean of corresponding values from both studies.
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.
