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EC number: 247-668-1 | CAS number: 26402-26-6
Surface tension
Administrative data
Link to relevant study record(s)
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Guideline study without GLP
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Deviations:
- no
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- ring method
- Surface tension:
- 29.5 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Executive summary:
The test item octanoic acid, monoester with glycerol has a surface tension of 29.5 mN/m (c = 1 g/L) in accordance with the test method A.5 "Surface Tension" as described in the Commission Regulation (EC) No. 440/2008 of 30 May 2008.
Reference
Results in mN/m:
| Test item | Water calibration | 1st TS, c = 1.088 g/L | 2nd TS, c = 1.104 g/L |
| Value 1 | 71.7 | 29.4 | 29.2 |
| Value 2 | 71.7 | 29.3 | 29.2 |
| Value 3 | 71.8 | 29.3 | 29.2 |
| Value 4 | 71.7 | 29.2 | 29.1 |
| Value 5 | 71.8 | 29.2 | 29.2 |
| Value 6 | 71.8 | 29.2 | 29.2 |
| Arithmetic mean | 71.8 | 29.3 | 29.2 |
| Standard deviation | 0.1 | 0.1 | 0 |
Calculation:
Arithmetic mean of two test solutions: 29.25 mN/m
Water theoretical value: 72.4 mN/m
Correction factor: 1.0084
Arithmetic mean corrected by calibration factor determined via water calibration: 29.5 mN/m
Description of key information
Key value for chemical safety assessment
- Surface tension:
- 29.5
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
Guideline A.5 (similar to OECD Guideline 115): For this test the "ring-method" was used.
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