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EC number: 429-100-6 | CAS number: 23911-56-0
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:
- 1998-09-11
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- dynamic method
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0.006 hPa
- Temp.:
- 25 °C
- Vapour pressure:
- 0.01 hPa
- Temp.:
- 50 °C
- Vapour pressure:
- 0.092 hPa
- Conclusions:
- The vapour pressures of the test item at 20 °C, 25 °C and 50 °C were extrapolated to be 0.0061 hPa, 0.01 hPa and 0.92 hPa, respectively.
- Executive summary:
A study was conducted to determine the vapour pressure of the test item according to Regulation (EC), Method A.4. and OECD 104 using the dynamic method. The vapour pressure was determined in a range between 124 °C and 235 °C. The vapour pressures of the test item at 20 °C, 25 °C and 50 °C were extrapolated to be 0.0061 hPa, 0.01 hPa and 0.92 hPa, respectively.
Reference
Temperature |
Vapour pressure |
Deviation |
|
|
measured |
calculated |
Δp/p*100 % |
°C |
hPa |
hPa |
|
124.03 |
8.8 |
8.59 |
2.4 |
130.06 |
11.4 |
11.37 |
0.3 |
143.48 |
20.2 |
20.44 |
-1.2 |
167.52 |
52.5 |
52.57 |
-0.1 |
187.13 |
103.5 |
104.16 |
-0.6 |
209.14 |
205.2 |
207.44 |
-1.1 |
216.47 |
253.8 |
256.76 |
-1.2 |
223.87 |
310.7 |
316.08 |
-1.7 |
233.75 |
406.5 |
412.65 |
-1.5 |
127.56 |
9.4 |
10.13 |
-7.8 |
137.72 |
15.3 |
15.98 |
-4.4 |
181.17 |
84.4 |
85.23 |
-1.0 |
199.55 |
153.8 |
155.07 |
-0.8 |
212.67 |
226.2 |
230.09 |
-1.7 |
221.64 |
291.4 |
297.11 |
-2.0 |
229.63 |
362.3 |
369.72 |
-2.0 |
234.40 |
410.9 |
419.71 |
-2.1 |
Antoine constants:
A = 7.5755
B = 2149.5
C = 199.62
Description of key information
The vapour pressures of the test item at 20 °C, 25 °C and 50 °C were extrapolated to be 0.0061 hPa, 0.01 hPa and 0.92 hPa, respectively.
Key value for chemical safety assessment
- Vapour pressure:
- 0.006 hPa
- at the temperature of:
- 20 °C
Additional information
A study was conducted to determine the vapour pressure of the test item according to Regulation (EC), Method A.4. and OECD 104 using the dynamic method. The vapour pressure was determined in a range between 124 °C and 235 °C. The vapour pressures of the test item at 20 °C, 25 °C and 50 °C were extrapolated to be 0.0061 hPa, 0.01 hPa and 0.92 hPa, respectively.
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