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EC number: 243-797-2 | CAS number: 20407-84-5
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:
- 2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Guideline study performed under GLP. All relevant validity criteria were met.
- 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
- Qualifier:
- according to guideline
- Guideline:
- other: OECD Test Guideline 113 (1981) Screening Test for Thermal Stability and Stability in Air
- Deviations:
- not specified
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EPA OPPTS 830.7950 (Vapor Pressure)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- inspected January 2013; signature: March 2013
- Type of method:
- dynamic method
- Temp.:
- 20 °C
- Vapour pressure:
- 25 Pa
- Temp.:
- 25 °C
- Vapour pressure:
- 34 Pa
- Temp.:
- 50 °C
- Vapour pressure:
- 120 Pa
- Conclusions:
- The vapour pressure of the test substance was determined to be at 20°C: 25 Pa and at 25°C: 34 Pa respectively
- Executive summary:
The vapour pressure was determined using by the dynamic method in EU Method A.4 and OECD TG 104. The vapour pressure of the test substance was determined to be at test substance was determined to be at 20°C: 25 Pa and at 25°C: 34 Pa respectively.
Reference
Thermal Stability
The DSC run in a closed glass crucible under an inert atmosphere was determined. The test item showed an exothermic effect starting at temperature of 240 °C.
Dynamic method: Vapour-liquid equilibrium (VLE)
The vapour pressure was measured in the temperature range of 108.1 to 170.2 °C. The measured vapour pressure values together with the measured temperatures are listed.
Table 1: Results of the dynamic method
No. |
Temperature / °C |
Vapour pressure / hPa |
Remark |
1 |
108.1 |
12.8 |
measured up |
2 |
122.4 |
19.5 |
measured up |
3 |
138.4 |
29.6 |
measured up |
4 |
148.4 |
39.5 |
measured up |
5 |
155.8 |
49.3 |
measured up |
6 |
170.2 |
79.0 |
measured up |
7 |
163.8 |
64.1 |
measured down |
8 |
148.4 |
39.7 |
measured down |
9 |
132.3 |
25.1 |
measured down |
The vapour pressure of the test item was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20, 25 and 50 °C.
Description of key information
Vapour Pressure: 25 Pa at 20 °C and 34 Pa at 25 °C, EU Method A.4, 2015
Key value for chemical safety assessment
- Vapour pressure:
- 34 Pa
- at the temperature of:
- 25 °C
Additional information
Key data : EU Method A.4, 2015 : The vapour pressure was determined using by the dynamic method in EU Method A.4 and OECD TG 104. The vapour pressure of the test substance was determined to be at test substance was determined to be at 20°C: 25 Pa and at 25°C: 34 Pa respectively.
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.
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