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EC number: 265-352-1 | CAS number: 65060-02-8
Surface tension
Administrative data
Link to relevant study record(s)
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- From November 13, 2017 to February 21, 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Deviations:
- no
- GLP compliance:
- no
- Remarks:
- The study was conducted in a facility which operates in accordance with Good Laboratory Practice principles; however no claim of GLP compliance was intended nor is made for this study
- Type of method:
- ring method
- Key result
- Surface tension:
- ca. 38.5 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Conclusions:
- Under the study conditions, the surface tension at nominally 1 g/L of the test substance in water was determined to be 38.5 ± 0.5 mN/m at 20 ± 0.5ºC. Therefore, the test substance was considered to be surface-active.
- Executive summary:
A study was conducted to determine the surface tension of the test substance, C16 TMA-MS (86.95 % active), using ring method, according to the OECD Guideline 115 and EU Method A.5. Under the study conditions, the surface tension at nominally 1 g/L of the test substance in water was determined to be 38.5 ± 0.5 mN/m at 20 ± 0.5ºC. Therefore, the test substance was considered to be surface-active (Envigo, 2018).
Reference
Results
The readings and temperatures for the sample solutions are shown in the following table:
Table1:
Surface tension values
Concentration (mg/L) |
Reading (mN/m) |
Temperature (°C) |
1.001 x 104 |
38.5 |
20.0 |
38.5 |
20.0 |
|
38.0 |
20.0 |
|
3.002 x 103 |
39.0 |
20.0 |
38.5 |
20.0 |
|
38.5 |
20.0 |
|
1.001 x 103 |
38.5 |
20.0 |
38.5 |
20.0 |
|
38.5 |
20.0 |
|
300.2 |
39.0 |
20.0 |
39.0 |
20.0 |
|
39.0 |
20.0 |
|
100.1 |
48.0 |
20.0 |
49.0 |
20.0 |
|
49.0 |
20.0 |
|
49.5 |
20.0 |
|
30.02 |
60.0 |
20.0 |
59.5 |
20.0 |
|
59.5 |
20.0 |
|
10.01 |
63.5 |
20.0 |
63.5 |
20.0 |
|
63.5 |
20.0 |
|
3.002 |
67.5 |
20.0 |
68.0 |
20.0 |
|
68.0 |
20.0 |
|
1.001 |
70.0 |
20.0 |
70.5 |
20.0 |
|
70.5 |
20.0 |
Mean surface tension values were based on the last three readings for a particular concentration which were considered to be constant.
The concentration (mg/L), log10 [concentration (mg/L)] and mean surface tension values for the sample solutions are shown in the following table:
Table 2: The concentration (mg/L), log10 [concentration (mg/L)] and mean surface tension values
Concentration |
Log10Concentration |
Mean Surface Tension (mN/m) |
Solution pH |
1.001 x 104 |
4.000 |
38.3 |
5.87 |
3.002 x 103 |
3.477 |
38.7 |
5.70 |
1.001 x 103 |
3.000 |
38.5 |
5.82 |
300.2 |
2.477 |
39.0 |
5.96 |
100.1 |
2.000 |
49.2 |
6.10 |
30.02 |
1.477 |
59.7 |
6.23 |
10.01 |
1.000 |
63.5 |
6.10 |
3.002 |
0.477 |
67.8 |
6.17 |
1.001 |
0.000 |
70.3 |
6.10 |
The surface tension at 1 g/L was determined to be 38.5 ± 0.5 mN/m.
Description of key information
The surface tension of the test substance was determined according to OECD Guideline 115 and EU method A.5. (Envigo, 2018).
Key value for chemical safety assessment
- Surface tension:
- 38.5
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
(surface active)
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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