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EC number: 220-489-6 | CAS number: 2783-17-7
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:
- 20. July 2018 - 28. January 2019
- 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 (incl. QA statement)
- Type of method:
- effusion method: by loss of weight or by trapping vaporisate
- Specific details on test material used for the study:
- Name 1,12-Diaminododecane
Batch no. B1-5-10
Appearance White flakes with different size
Composition 1,12-Diaminododecane, mono-constituent
CAS No. 2783-17-7
EINECS-No. 220-489-6
Molecular formula C12H28N2
Molecular weight 200.36 g/mol
Homogeneity homogeneous
Expiry date 29.01.2019
Storage Room Temperature (20 ± 5°C) - Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0.024 Pa
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0.035 Pa
- Temp.:
- 40 °C
- Vapour pressure:
- 0.109 Pa
- Temp.:
- 50 °C
- Vapour pressure:
- 0.197 Pa
- Temp.:
- 60 °C
- Vapour pressure:
- 0.399 Pa
- Conclusions:
- For the test item 1,12-Diaminododecane, the following vapour pressures at 20 °C and at
25 °C were calculated from the regression equation:
Vapour pressure at 20 °C: 2.41 * 10-02Pa
Vapour pressure at 25 °C: 3.55 * 10-02Pa - Executive summary:
The vapour pressure of 1,12-Diaminododecane was determined according to OECD 104
resp. EU A.4 using the effusion method (weight loss).
Vapour pressure was examined at four different temperatures. Three temperatures could be
evaluated as they showed reproducible weight loss. For these temperatures, 1/T was plotted
against log (p).
Table 3-a Vapour Pressures (Effusion Method)
Experiment T Mean p Stand. Dev. p RSD p
No. K Pa Pa %
2 313.2 1.09E-01 2.36E-02 21.8%
3 323.2 1.97E-01 2.68E-02 13.6%
4 333.2 3.99E-01 9.49E-02 23.8%
In this table, E-0X represents multiplication with 10-x.
Stand. Dev. = Standard Deviation; RSD = Relative Standard Deviation
The graph 1/T vs. log (p) shows a straight line with a correlation coefficient of - 0.9979.
For the test item 1,12-Diaminododecane, the following vapour pressures at 20 °C and at
25 °C were calculated from the regression equation:
Vapour pressure at 20 °C: 2.41 * 10-02Pa
Vapour pressure at 25 °C: 3.55 * 10-02Pa
Reference
Description of key information
One Guideline Study available
Key value for chemical safety assessment
- Vapour pressure:
- 0.04 Pa
- at the temperature of:
- 25 °C
Additional information
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