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EC number: 428-040-8 | CAS number: 138261-41-3
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:
- 5 Jul - 14 Sep 1993
- 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:
- gas saturation method
- Temp.:
- 20 °C
- Vapour pressure:
- 0 hPa
- Temp.:
- 25 °C
- Vapour pressure:
- 0 hPa
Reference
Vapour pressures calculated from the study data:
Test parameter |
Substance mass (µg) |
Gas volume at p0, T0 (L) |
Pressure p1 (hPa) |
Temperature T1 (K) |
Gas volume at p1, T1 (L) |
Vapour pressure (hPa) |
70 °C, 2 L/min |
0.664 |
14473.4 |
1033 |
343.15 |
17830.0 |
4.15E-09 |
70 °C, 1 L/min |
0.631 |
14104.2 |
1038 |
343.15 |
17286.9 |
4.07E-09 |
60 °C, 4 L/min |
0.374 |
24135.0 |
1081 |
333.15 |
27584.8 |
1.47E-09 |
60 °C, 2 L/min |
0.296 |
21592.8 |
1039 |
333.15 |
25676.8 |
1.25E-09 |
50 °C, 4 L/min |
0.176 |
25283.6 15920.0 |
1049 1084 1063(mean) |
323.15 |
28885.2 17600.5 46485.7 (sum) |
3.97E-10 |
50 °C, 2 L/min |
0.164 |
54917.7 |
1069 |
323.15 |
61566.9 |
2.80E-10 |
log p [hPa] = a + b*(1/T[K])
a = 9.26641
b = -6052.06
Corr. coefficient R = -0.992945, R² = 98.59%
Description of key information
4.0E-12 hPa at 20 °C
9.0E-12 hPa at 25 °C
Key value for chemical safety assessment
- Vapour pressure:
- 0 hPa
- at the temperature of:
- 20 °C
Additional information
The vapour pressure of the substance was determined according to OECD Guideline 104 and EU Method A.4 (gas saturation method).
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