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EC number: 619-536-7 | CAS number: 68425-57-0
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:
- 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Deviations:
- no
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
- Specific details on test material used for the study:
- Name: Phosphoric acid, mixed decyl and octyl esters, compds. with diethanolamine
CAS No.: 68425-57-0
Physical state: white solid at 20 °C (turbid, non-pourable paste)
Batch No.: PU61810016
Re-certification date of batch: 16 June 2018
Purity: 100 % (UVCB)
Moisture, % (KF) 1,2
pH, 10% in dW 7,2
Stability: stable under test conditions
Storage condition of test material: Room temperature, protected from light - Key result
- Surface tension:
- 27.4 mN/m
- Temp.:
- 20.2 °C
- Conc.:
- 228 mg/L
- Conclusions:
- The aim of the study was the determination of the surface tension of the test item at 20 °C +- 0.5 °C according to EC method A.5 and OECD 115. The mean of two determinations of the surface tension of the test item was determined to be 27.4 mN/m at 20.2 °C. Since the test item showed a surface tension lower than 60 mN/m under the conditions of this method the test item will be regarded as being surface-active material according to Council Regulation (EC) No 440/2008.
- Executive summary:
The aim of the study was the determination of the surface tension of the test item at 20 °C +- 0.5 °C according to EC method A.5 and OECD 115. The mean of two determinations of the surface tension of the test item was determined to be 27.4 mN/m at 20.2 °C. Since the test item showed a surface tension lower than 60 mN/m under the conditions of this method the test item will be regarded as being surface-active material according to Council Regulation (EC) No 440/2008.
Reference
Results
The aim of the study was the determination of the surface tension of the test item at 20 °C +- 0.5 °C according to EC method A.5 and OECD 115.
The mean of two determinations of the surface tension of the test item was determined to be 27.4 mN/m at 20.2 °C. Since the test item showed a surface tension lower than 60 mN/m under the conditions of this method the test item will be regarded as being surface-active material according to Council Regulation (EC) No 440/2008.
Table 1: Surface tension of the test item (Test No. 1)
| No. | Temperature [°C] |
Surface Tension (measured) [mN/m] |
1 |
20.1 |
26.8 |
2 |
20.1 |
26.8 |
3 |
20.1 |
26.7 |
4 |
20.1 |
26.7 |
5 |
20.1 |
26.7 |
Mean |
20.1 |
26.7 |
SD [mN/m] |
0.0 |
0.1 |
Age of solution [h] |
- |
0.6 |
Table 2: Surface tension of the test item (Test No. 2)
Temperature [°C] |
Surface Tension (measured) [mN/m] |
|
1 |
20.2 |
27.0 |
2 |
20.2 |
26.9 |
3 |
20.2 |
26.8 |
4 |
20.2 |
26.8 |
5 |
20.2 |
26.8 |
Mean |
20.2 |
26.9 |
SD [mN/m] |
0.0 |
0.1 |
Age of solution [h] |
- |
1.1 |
Table 3: Surface tension of the test item
| Test No. | Weighed amount per 100 mL | Mean temperature [°C] |
Mean Surface Tension (measured) [mN/m] |
corrected Mean Surface Tension [mN/m] |
Age of solution [h] |
| 1 | 22.8 | 20.1 | 26.7 | 27.3 | 0.6 |
| 2 | 22.8 | 20.2 | 26.9 | 27.5 | 1.1 |
| Mean | 22.8 | 20.2 | 26.8 | 27.4 | 0.9 |
| AD | 0.0 | 0.1 | 0.2 | 0.2 | 0.5 |
AD: Absolute Deviation
Description of key information
The aim of the study was the determination of the surface tension of the test item at 20 °C +- 0.5 °C according to EC method A.5 and OECD 115. The mean of two determinations of the surface tension of the test item was determined to be 27.4 mN/m at 20.2 °C. Since the test item showed a surface tension lower than 60 mN/m under the conditions of this method the test item will be regarded as being surface-active material according to Council Regulation (EC) No 440/2008.
Key value for chemical safety assessment
- Surface tension:
- 27.4
- in mN/m at 20°C and concentration in mg/L:
- 228
Additional information
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