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EC number: 952-948-8 | CAS number: -
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:
- 18 November 2019 to 30 March 2020
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- 2009
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- 2006
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: Knudsen cell
- Specific details on test material used for the study:
- Purity: 94.5 %
Storage Condition: Ambient temperature, cool and dry conditions, DEFITRACES. - Key result
- Test no.:
- #1
- Temp.:
- ca. 20 °C
- Vapour pressure:
- ca. 0.002 Pa
- Conclusions:
- 3-Bromo-1-(3-Chloro-2-Pyridyl)-5-Methyl-1H-Pyrazole is a solid at 20°C with a vapour pressure of 1.845 x 10-3 Pa at 20 °C.
- Executive summary:
By dynamic effusion method with a micro-balance vapour pressure for 3-Bromo-1-(3-Chloro-2-Pyridyl)-5-Methyl-1H-Pyrazole was evaluated according to OECD guideline 104 (2006) and EC A.4 (2009).
The vapour pressure (P) of the test item extrapolated is 1.845 x 10-3 Pa at 20 °C.
The volatility (H) of the test item calculated at 20 °C is 5.549 x 10-4 Pa.m3.mol-1.
Reference
The mass of sample weighed for each assay was reported in the table below. The sample was placed in a Knudsen effusion cell. Then the cell was placed in the apparatus.
Assay No. |
Test temperature t (°C) |
Mass of test item (mg) |
Knudsen effusion cell aperture size (μm) |
Result used |
1 |
43 |
14.34 |
279.9 |
Yes |
2 |
38 |
14.34 |
279.9 |
Yes |
3 |
30 |
14.34 |
279.9 |
Yes |
4 |
25 |
14.34 |
279.9 |
Yes |
No degradation of the test item was observed.
Description of key information
In compliance with Regulation (EC) No. 1907/2006, Council Regulation (EC) No. 761/2009, EC A.4. method (2009) and OECD Guideline No. 104 (2006), the vapour pressure (P) of 3-Bromo-1-(3-Chloro-2-Pyridyl)-5-Methyl-1H-Pyrazole extrapolated is 1.845 x 10-3 Pa at 20 °C.
The volatility (H) of 3-Bromo-1-(3-Chloro-2-Pyridyl)-5-Methyl-1H-Pyrazole calculated at 20 °C is 5.549 x 10-4 Pa.m3.mol-1.
Key value for chemical safety assessment
- Vapour pressure:
- 0.002 Pa
- at the temperature of:
- 20 °C
Additional information
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