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EC number: 603-094-7 | CAS number: 125904-11-2
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:
- between 26 July 2010 and 29 July 2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: A GLP study conducted to an appropriate, accepted guideline.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: vapour pressure balance
- Temp.:
- 25 °C
- Vapour pressure:
- 12 Pa
- Conclusions:
- The vapour pressure of the test item has been determined to be 12 Pa at 25°C.
- Executive summary:
The vapour pressure was determined using a vapour pressure balance with measurements being made at several temperatures and linear regression analysis used to calculate the vapour pressure at 25°C. Testing was conducted using a procedure designed to be compatible with Method A4 Vapour Pressure of Commission Regulation (EC) No 440/2008 of 30 May 2008.The test item has been determined to have a vapour pressure of 12 Pa at 25°C.
Reference
Table 1: Summary of Results
Run |
Log10[Vp(25°C)] |
1 |
1.059 |
2 |
1.103 |
3 |
1.100 |
4 |
1.103 |
5 |
1.094 |
6 |
1.090 |
7 |
1.077 |
Mean : 1.089 Vapour Pressure : 12 Pa |
|
In the attached pdf, full results from runs 1 to 7 are tabulated along with their corresponding plot of Log10Vp (Pa) versus reciprocal temperature (1/T(K)).
Description of key information
The test item has been determined to have a vapour pressure of 12 Pa at 25°C, using a vapour pressure balance.
Key value for chemical safety assessment
- Vapour pressure:
- 12 Pa
- at the temperature of:
- 25 °C
Additional information
The key study Tremain & Atwal (2010) was performed to the guideline EU Method A.4 and in compliance with GLP. The study was therefore considered adequate for assessment as a standalone study, and accordingly assigned a reliability score of 1.
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