Registration Dossier
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EC number: 268-919-1 | CAS number: 68154-72-3
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:
- 14th February - 16th May 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: isothermal thermogravimetry
- Specific details on test material used for the study:
- SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: SOAP012-2
- Expiration date of the lot/batch: 1 November 2022
STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: Ambient - Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Conclusions:
- The vapour pressure of the test item is 5.0 E-07 Pa at 25°C.
- Executive summary:
A study to determine the vapour pressure of the test item, fatty acids lanolin lithium salts, was conducted according to the OECD 104 guideline (Dunning 2018). The vapour pressure was determined by the effusion method using isothermal thermogravimetry analysis. Four runs were performed between temperatures of 159 and 189°C. For runs 1 and 2, the isothermal time was set to 20 minutes. This was subsequently extended to 60 minutes for runs 3 and 4 in order to increase the weight lost and hence sensitivity. Only the data from runs 3 and 4 have therefore been reported.
The vapour pressure of the test item was determined to be 5.0 E-07 Pa at 25°C.
The study is GLP-compliant and was conducted according to the standard guideline, therefore is considered reliable without restrictions and suitable as a key study for this endpoint.
Reference
For runs 1 and 2, the isothermal time was set to 20 minutes. This was subsequently extended to 60 minutes for runs 3 and 4 in order to increase the weight lost and hence sensitivity. Only the data from runs 3 and 4 have therefore been reported.
The results from runs 3 and 4 are detailed in Table 1.
Table 1. A summary of results with fatty acids lanolin lithium salts
Parameter |
Run 3 |
Run 4 |
|
|
|
Correlation (R2) |
0.9996 |
0.9048 |
Slope |
-5794 |
-4897 |
Intercept |
11.90 |
10.38 |
log10PTat 25°C |
-7.5 |
-6.0 |
PT(Pa) at 25°C |
3.0 x 10-8 |
9.0 x 10-7 |
|
|
|
Description of key information
The vapour pressure of the test item is 5 E-07 Pa at 25°C.
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 25 °C
Additional information
A study to determine the vapour pressure of the test item, fatty acids lanolin lithium salts, was conducted according to the OECD 104 guideline (Dunning 2018). The vapour pressure was determined by the effusion method using isothermal thermogravimetry analysis. Four runs were performed between temperatures of 159 and 189°C. For runs 1 and 2, the isothermal time was set to 20 minutes. This was subsequently extended to 60 minutes for runs 3 and 4 in order to increase the weight lost and hence sensitivity. Only the data from runs 3 and 4 have therefore been reported.
The vapour pressure of the test item was determined to be 5.0 E-07 Pa at 25°C.
The study is GLP-compliant and was conducted according to the standard guideline, therefore is considered reliable without restrictions and suitable as a key study for this endpoint.
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