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EC number: - | 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:
- 20220305-20220520
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- GLP compliance:
- no
- Type of method:
- effusion method: isothermal thermogravimetry
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- < 0.059 Pa
- Conclusions:
- The vapour pressure of test item was determined by Effusion method: isothermal thermogravimetry and the vapour pressure of the test item was less than 5.93×10-2 Pa at 20.0°C.
- Executive summary:
The vapour pressure of test item was determined by Effusion method: isothermal thermogravimetry.
The test item had mass loss in the temperature range of 60.0°C ~ 88.0°C and 120.0°C ~ 148.0°C, its regularity was not ideal, while the mass loss of the reference substance had a good regularity. Compared the lgVT of the test item and the reference item under each test temperature, it was found that the lgVT of the test item was all less than that of the reference item benzoic acid ,therefore it can be judged that the vapour pressure of the test item was less than that of the reference benzoic acid. (Within the temperature range of 120.0°C ~148.0°C, the lgVT of the test item was occasionally larger than that of the reference item chlorothalonil. It can be speculated that the vapour pressure of some constituents in the test item may be greater than that of the reference item chlorothalonil.)
So, the vapour pressure of the test item was less than 5.93×10-2 Pa at 20.0°C.
Reference
The test item had mass loss in the temperature range of 60.0°C ~ 88.0°C and 120.0°C ~ 148.0°C, its regularity was not ideal, while the mass loss of the reference substance had a good regularity. Compared the lgVT of the test item and the reference item under each test temperature, it was found that the lgVT of the test item was all less than that of the reference item benzoic acid ,therefore it can be judged that the vapour pressure of the test item was less than that of the reference benzoic acid. (Within the temperature range of 120.0°C ~148.0°C, the lgVT of the test item was occasionally larger than that of the reference item chlorothalonil. It can be speculated that the vapour pressure of some constituents in the test item may be greater than that of the reference item chlorothalonil.)
So, the vapour pressure of the test item was less than 5.93×10-2 Pa at 20.0°C.
Description of key information
The vapour pressure of test item was determined by Effusion method: isothermal thermogravimetry and the vapour pressure of the test item was less than 5.93×10-2 Pa at 20.0°C.
Key value for chemical safety assessment
- Vapour pressure:
- 0.059 Pa
- at the temperature of:
- 20 °C
Additional information
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