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EC number: 801-260-5 | CAS number: 96383-55-0
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:
- 17 Jun - 5 Sep 2013
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Ministerie van Volksgezondheid, Welzijn en Sport, Den Haag
- Type of method:
- effusion method: by loss of weight or by trapping vaporisate
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 4.9 Pa
- Temp.:
- 25 °C
- Vapour pressure:
- 8.5 Pa
Reference
Results of the isothermal TGA analysis:
Temperature [°C] |
Weight loss [µg/min] |
vT[mg/cm2/h] |
log vT |
log P |
P [Pa] |
40 |
20.88 |
2.49 |
-2.60 |
1.58 |
38 |
20.02 |
2.39 |
-2.62 |
1.56 |
36 |
|
50 |
53.17 |
6.35 |
-2.20 |
2.00 |
100 |
52.85 |
6.31 |
-2.20 |
2.00 |
100 |
|
60 |
121.1 |
1.45 |
-1.84 |
2.38 |
240 |
117.9 |
1.41 |
-1.85 |
2.37 |
230 |
|
70 |
253.6 |
3.03 |
-1.52 |
2.72 |
520 |
241.7 |
2.89 |
-1.54 |
2.70 |
500 |
On the basis of these results in the temperature range 30 °C - 70 °C, the following equation was obtained:
log P = -4078 * 1/T + 14.60 (r = 0.9992, n = 8, T in [K], P in [Pa])
Extrapolation to temperatures 20 °C and 25 °C gives log P values of 4.9 and 8.5, respectively, and values of P in [Pa] as given above.
Description of key information
4.9 Pa at 20 °C
8.5 Pa at 25 °C
Key value for chemical safety assessment
- Vapour pressure:
- 4.9 Pa
- at the temperature of:
- 20 °C
Additional information
The vapour pressure of the substance was determined using isothermal TGA effusion method according to EU method A.4 and guidelines OECD 104 and OPPTS 830.7950.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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