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EC number: 821-451-7 | CAS number: 78920-10-2
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 31 July 2018 - 19 April 2019
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 019
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- 2016
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- 2006
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- effusion method: isothermal thermogravimetry
Test material
- Reference substance name:
- 5-hydroxy-4-propyl-2,5-dihydrofuran-2-one
- Cas Number:
- 78920-10-2
- Molecular formula:
- C7H10O3
- IUPAC Name:
- 5-hydroxy-4-propyl-2,5-dihydrofuran-2-one
- Test material form:
- liquid: viscous
- Details on test material:
- - Appearance: Brown viscous liquid
- Storage condition of test material: At room temperature
Constituent 1
- Specific details on test material used for the study:
- Decomposition starts above 175°C.
Results and discussion
Vapour pressureopen allclose all
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0.011 Pa
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0.02 Pa
Any other information on results incl. tables
Table: Results of the Vapour pressure Isothermal TGA Analysis
Temperature |
Weight loss |
νT |
log νT |
log PT |
PT |
60 |
0.828124 |
9.89 x 10-5 |
-4.01 |
0.01 |
1.0 |
|
0.794576 |
9.48 x 10-5 |
-4.02 |
-0.01 |
0.97 |
70 |
1.54046 |
1.84 x 10-4 |
-3.74 |
0.36 |
2.3 |
|
1.41033 |
1.68 x 10-4 |
-3.77 |
0.31 |
2.0 |
80 |
3.23557 |
3.86 x 10-4 |
-3.41 |
0.77 |
5.9 |
|
3.00521 |
3.59 x 10-4 |
-3.45 |
0.73 |
5.3 |
90 |
6.61226 |
7.89 x 10-4 |
-3.10 |
1.17 |
15 |
|
6.40327 |
7.64 x 10-4 |
-3.12 |
1.15 |
14 |
Table: Vapour Pressure of the Test Item
Temperature |
log PT |
PT |
PT |
20 |
-1.96 |
1.1 x 10-2 |
8.2 x 10-5 |
25 |
-1.69 |
2.0 x 10-2 |
1.5 x 10-4 |
Applicant's summary and conclusion
- Conclusions:
- The vapour pressure of the substance at 20°C and 25°C was determined to be 1.1E-2 Pa and 2.0E-2 Pa, resp.
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