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EC number: 441-000-4 | CAS number: 121219-07-6 1-ETHOXY-2,3-DIFLUORBENZOL; 1-ETHOXY-2,3-DIFLUOROBENZENE; 2,3-DIFLUOROPHENETOL; DIPHOL
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:
- 2000-09-19 to 2000-09-28
- 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:
- EEC Directive 92/69, appendix L 383 A
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- OECD Guideline No. 104 (July 27th 1995)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- static method
- Key result
- Test no.:
- #1
- Temp.:
- 20.2 °C
- Vapour pressure:
- 432.25 Pa
- Key result
- Test no.:
- #2
- Temp.:
- 40.3 °C
- Vapour pressure:
- 892.43 Pa
- Conclusions:
- The estimated vapour pressure at 20 °C is 413 Pa.
- Executive summary:
The vapour pressure of test item has been determined according to the static method described in OECD Guideline n. 104 (July 27 1995), and to the EEC Directive 92/69, appendix L 383 A in which the vapour pressure occurring in a closed system in a thermodynamic equilibrium state is measured at two specified temperatures between -20 °C and +70 °C. The measurement range stretches from 100/200 to 105 Pa. The vapour pressure has been measured at two temperatures chosen to be nominal values of 20.2 °C and 40.3 °C.
Reference
temp.(°C) |
mean T |
+/- st.dev |
1/T |
P (mm Hg) |
mean P |
+/- st.dev |
log (P) |
20.2 |
20.2 |
0.05 |
3.4 10-3 |
3.16 |
3.25 |
0.09 |
0.4997 |
20.1 |
3.4 10-3 |
3.34 |
0.5237 |
||||
40.5 |
40.3 |
0.25 |
3.2 10-3 |
6.88 |
6.71 |
0.18 |
0.8376 |
40.0 |
3.2 10-3 |
6.53 |
0.8149 |
Description of key information
The estimated vapour pressure of the test item at 20 °C is 413 Pa (reference 4.6-1).
Key value for chemical safety assessment
- Vapour pressure:
- 413 Pa
- at the temperature of:
- 20 °C
Additional information
The vapour pressure of test item has been determined according to the static method described in OECD Guideline No. 104 (July 27 1995), and to the EEC Directive 92/69, appendix L 383 A in which the vapour pressure occurring in a closed system in a thermodynamic equilibrium state is measured at two specified temperatures between -20 °C and +70 °C. The measurement range stretches from 100/200 to 105 Pa. The vapour pressure has been measured at two temperatures chosen to be nominal values of 20.2 °C and 40.3 °C. The vapour pressure was extrapolated to be 413 Pa at 20 °C.
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