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EC number: 611-025-7 | CAS number: 53651-69-7
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:
- 2010-07-02 to 2010-08-16
- 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)
- Version / remarks:
- adopted 27th July 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Version / remarks:
- adopted 31st May 2008
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- OECD harmonised ring method
- Specific details on test material used for the study:
- - Name of test material used in the report: Purasolv NPL
- CAS no.: 53651-69-7
- Batch no.: 0908000392
- Appearance: clear colourless liquid
- Purity: 99.3% w/w
- Storage: at room temperature in the dark under nitrogen
- Expiry date: 2010-08-13 - Key result
- Surface tension:
- 69 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Conclusions:
- The surface tension of a 1 g/L test solution of Propyl (S)-lactate in water at 20 °C was 69.0 mN/m. The test substance is considered not to be surface active.
- Executive summary:
In a GLP study the surface tension of PURASOLV®NPL (n-Propyl-S-lactate) was determined unsing the harmonized ring method in compliance with OECD 115 and EEC A.5.
The surface tension of a test solution at a concentration of 1 g/L in water at 20 °C was 69.0 mN/m. The test substance is considered not to be surface active.
Reference
Table 1: Surface tension of Propyl (S)-lactate
Measurement |
Time passed (minutes) |
Surface tension (mN/m) |
||
|
|
individual |
mean |
Mean multiplied by calibration factor and Harkins-Jordan corrected value |
1 |
21 |
69.3 |
68.91 |
69.0 |
2 |
22 |
69.2 |
|
|
3 |
23 |
68.8 |
|
|
4 |
24 |
69.0 |
|
|
5 |
25 |
69.1 |
|
|
6 |
26 |
68.7 |
|
|
7 |
27 |
69.0 |
|
|
1Mean calculated from measurements 3 to 7, after equilibrium was reached.
Description of key information
The OECD harmonized ring method was used for the determination of the surface tension of Propyl (S)-lactate. The surface tension of a test solution at a Propyl (S)-lactate concentration of 1 g/L in water at 20 °C was 69.0 mN/m. The test substance is therefore considered as not surface active.
Key value for chemical safety assessment
- Surface tension:
- 69
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
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