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EC number: 250-528-2 | CAS number: 31242-17-8
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:
- 18 March 2019 to 18 April 2019
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- GLP compliance:
- yes
- Type of method:
- effusion method: isothermal thermogravimetry
- Specific details on test material used for the study:
- SOURCE OF TEST MATERIAL
- Lot/batch No.of test material: E01255-297
- Expiration date of the lot/batch: 31 December 2022 - Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0 Pa
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0 mm Hg
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0 mm Hg
- Conclusions:
- The isothermal thermogravimetric analyzer effusion method was applied for the determination of the vapour pressure of the test item. The vapour pressure of the test item at 20°C (293K) was <1.3 x10^-8 Pa and <1.0 x10^-10 mmHg and at 25°C (298K) was <5.5 x10^-8 Pa and <4.1 x10^-10 mmHg.
- Executive summary:
The study was performed based on procedures in the OECD Guideline 104 (Vapour Pressure Curve) and EU Method A.4 (Vapour Pressure). The isothermal thermogravimetric analyzer effusion method was applied for the determination of the vapour pressure of the test item. The vapour pressure of the test item at 20 °C (293 K) was <1.3 x10-8 Pa and <1.0 x10 -10 mmHg and at 25 °C (298 K) was <5.5 x10 -8 Pa and <4.1 x 10 -10 mmHg.
Reference
Weight loss, due to evaporation of volatile components, was observed from the start of the study to 150 minutes. Weight loss was determined in the range of 200 °C – 230 °C. No reliable vapour pressure could be determined, since the correlation of variation R was <0.99 within this temperature range. The weight losses of the test item were compared with the weight losses of benzo(ghi)perylene (reference substance). Since the weight loss of the test item was lower than the weight loss of the reference compound, the vapour pressure of the test item is considered to be lower than that of benzo(ghi)perylene.
Description of key information
The study was performed based on procedures in the OECD Guideline 104 (Vapour Pressure Curve) and EU Method A.4 (Vapour Pressure). The isothermal thermogravimetric analyzer effusion method was applied for the determination of the vapour pressure of the test item. The vapour pressure of the test item at 20 °C (293 K) was <1.3 x10-8 Pa and <1.0 x10-10 mmHg and at 25 °C (298 K) was <5.5 x10-8 Pa and <4.1 x10-10 mmHg.
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 20 °C
Additional information
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