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EC number: 244-216-5 | CAS number: 21112-37-8
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:
- 2018-11-19 - 2018-11-23
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- static method
- Specific details on test material used for the study:
- Test Item Name: 2-tert-butyl-1,4-dimethoxybenzene
Other Name: Vetimoss
CAS number: 21112-37-8
Batch/ Lot Number: A18011C
Purity: 98%
Description: Clear pale yellow liquid
Re-test/ Expiry date: 06/06/2019 - Key result
- Test no.:
- #3
- Temp.:
- 20 °C
- Vapour pressure:
- 20 Pa
- Conclusions:
- The vapour pressure of Vetimoss was reported to be 20 Pa at 20°C.
- Executive summary:
The vapour pressure of Vetimoss was determined using the Static Method and according to the EU technical method A.4. The vapour pressure of Vetimoss was reported to be 20 Pa at 20°C.
Reference
Date: 19/11/2018 – 23/11/2018
Operator: G. Jordan / A. Venn
Preparation: Tested as received.
SOP Reference: CTL SOP No. 404B
Apparatus: Static Method Apparatus; Temperature Bath, Balance, Pressure Monitors
Result: 20 Pa at 20°C (mean of runs 1 & 3)
Full test results
| Temp / °C | Temp / K | P / mbar | **Pa / Pa |
| Run 1 | |||
| *20 | 293.15 | 0.2 | 20 |
| 20.1 | 293.25 | 0.2047 | 20.47 |
| 30.1 | 303.25 | 0.4261 | 42.61 |
| 40.7 | 313.85 | 0.9633 | 96.33 |
| 49.9 | 323.05 | 1.7 | 170 |
| 64.7 | 337.85 | 4.3 | 430 |
| Run 3 | |||
| *20 | 293.15 | 0.2 | 20 |
| 20.4 | 293.55 | 0.2041 | 20.41 |
| 29.8 | 302.95 | 0.4265 | 42.65 |
| 40.3 | 313.45 | 0.9657 | 96.57 |
| 50.1 | 323.25 | 1.9 | 190 |
| 65.2 | 338.35 | 4.8 | 480 |
* - Determined by extrapolation
** - Calculated
Comments
Run 1 : Sample was degassed for approximately 3.5 hours.
Run 2 : Not reported due to a leak in the system.
Run 3 : Sample was degassed for approximately 3 hours.
Description of key information
The vapour pressure of Vetimoss was determined using the Static Method and according to the EU technical method A.4. The vapour pressure of Vetimoss was reported to be 20 Pa at 20°C.
Key value for chemical safety assessment
- Vapour pressure:
- 20 Pa
- at the temperature of:
- 20 °C
Additional information
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