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EC number: 227-876-9 | CAS number: 6021-61-0
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:
- May 15 and 16, 2019
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- 2006
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: Knudsen cell
- Test no.:
- #1
- Temp.:
- 20 °C
- Vapour pressure:
- 0 Pa
- Test no.:
- #2
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Conclusions:
- Vapour pressure at 20 °C is 0.0002294 Pa.
Vapour pressure at 25 °C is 0.0003384 Pa. - Executive summary:
Method
Effusion method: Knudsen cell as described in OECD 104.
Results
Vapour pressure at 20 °C is 0.0002294 Pa.
Vapour pressure at 25 °C is 0.0003384 Pa.
Reference
| Temperature, °C | Δm/Δt, mg/min × 10-5 | Vapour pressure, Pa × 10 -2 |
| 60.7 | 2.6154 | 0.40270 |
| 65.7 | 2.7935 | 0.43334 |
| 70.8 | 4.8225 | 0.75367 |
| 75.0 | 6.7229 | 1.0571 |
| 80.0 | 7.3809 | 1.1689 |
| 85.0 | 8.8448 | 1.4106 |
Regression data of the vapour regression curve:
intercept: 6.4250
slope: -2950.3595
R squared 0.9441
Description of key information
Vapour pressure at 20 °C is 0.0002294 Pa.
Vapour pressure at 25 °C is 0.0003384 Pa.
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 20 °C
Additional information
Effusion method: Kudsen cell - OECD guideline 104.
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