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EC number: 223-529-0 | CAS number: 3943-89-3
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 27 June 2016 to 27 September 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 016
- Report date:
- 2016
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7950 (Vapor Pressure)
- GLP compliance:
- yes
- Type of method:
- effusion method: isothermal thermogravimetry
Test material
- Reference substance name:
- Ethyl 3,4-dihydroxybenzoate
- EC Number:
- 223-529-0
- EC Name:
- Ethyl 3,4-dihydroxybenzoate
- Cas Number:
- 3943-89-3
- Molecular formula:
- C9H10O4
- IUPAC Name:
- ethyl 3,4-dihydroxybenzoate
- Test material form:
- solid: particulate/powder
Constituent 1
Results and discussion
Vapour pressureopen allclose all
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0 Pa
- Remarks on result:
- other: calculated via regression analysis
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Remarks on result:
- other: calculated via regression analysis
- Test no.:
- #1
- Temp.:
- ca. 90 °C
- Vapour pressure:
- >= 0.16 - <= 0.19 Pa
- Test no.:
- #2
- Temp.:
- ca. 100 °C
- Vapour pressure:
- ca. 0.67 Pa
- Test no.:
- #3
- Temp.:
- ca. 110 °C
- Vapour pressure:
- >= 2.5 - <= 2.6 Pa
- Test no.:
- #4
- Temp.:
- ca. 120 °C
- Vapour pressure:
- >= 9.2 - <= 9.4 Pa
Any other information on results incl. tables
Temperature |
Weight loss[µg/min] |
νT[g/cm2/h] |
logνT |
logPT |
PT[Pa] |
90 |
0.483558 |
5.77´10-5 |
-4.24 |
-0.73 |
0.19 |
|
0.427894 |
5.11´10-5 |
-4.29 |
-0.80 |
0.16 |
100 |
1.24991 |
1.49´10-4 |
-3.83 |
-0.18 |
0.67 |
|
1.25186 |
1.49´10-4 |
-3.83 |
-0.18 |
0.67 |
110 |
3.43179 |
4.10´10-4 |
-3.39 |
0.41 |
2.6 |
|
3.35927 |
4.01´10-4 |
-3.40 |
0.40 |
2.5 |
120 |
8.96888 |
1.07´10-3 |
-2.97 |
0.97 |
9.4 |
|
8.84720 |
1.06´10-3 |
-2.98 |
0.97 |
9.2 |
Applicant's summary and conclusion
- Conclusions:
- The vapour pressure of the substance at 20 °C is 6.7E-07 Pa
- Executive summary:
The isothermal TGA effusion method was applied for the determination of the vapour pressure of CH02700.
The vapour pressure of the test item at 20°C (293K) and 25°C (298K) was:
20°C
25°C
[Pa]
[mm Hg]
[Pa]
[mm Hg]
Test item
6.2´10-7
4.6´10-9
1.8´10-6
1.4´10-8
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