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EC number: 602-927-1 | CAS number: 123312-89-0
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:
- 08 Jun 1994
- 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:
- according to guideline
- Guideline:
- other: ISO 304 "Surface active agents - Determination of surface tension by drawing up liquid films"
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- plate method
- Remarks:
- Wilhelmy plate method (ISO 304)
- Surface tension:
- >= 69.4 - <= 72.3 mN/m
- Temp.:
- 20 °C
- Conc.:
- 10 g/L
- Remarks on result:
- other: the Conc. was a filtrate of 10.00 g/L
- Conclusions:
- The surface tension of 10.0 g/L filtrates of test item has been determined in duplicated and was between 69.4 - 72.3 mN/m at 20.0 ± 0.2 °C.
- Executive summary:
The surface tension of the test item has been determined using the plate method in accordance with OECD TG 115 and in compliance with GLP. The surface tension of two measurements of 10.0 g/L filtrates of test item in water has been determined between 69.4 - 72.3 mN/m at 20.0 ± 0.2 °C.
Reference
Correction factor Ob = 72.75 / σ (water,exp) = 72.75 / 73.6 = 0.989
Table: Surface tension determinations by the Wilhelmy plate method; Experiment 1
Concentration (g/L) |
σ (solution) mN/m |
σcorr.for Ob (mN/m) |
|
Filtrate of a 10.00 g/L suspension |
minutes |
readings |
|
0 |
70.8 |
69.4 |
|
1 |
70.6 |
||
5 |
70.1 |
||
10 |
69.8 |
||
15 |
69.6 |
||
Average |
70.2 |
||
Table: Experiment 2
Concentration (g/L) |
σ (solution) mN/m |
σcorr.for Ob (mN/m) |
|
Filtrate of a 10.00 g/L suspension |
minutes |
readings |
|
0 |
73.2 |
72.3 |
|
1 |
73.2 |
||
5 |
73.1 |
||
10 |
73.0 |
||
15 |
73.0 |
||
Average |
73.1 |
||
Description of key information
69.4 - 72.3 mN/m at 20 °C, OECD 115, plate method, Ryser 1994
Key value for chemical safety assessment
- Surface tension:
- 71
- in mN/m at 20°C and concentration in mg/L:
- 10 000
Additional information
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