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EC number: 269-825-3 | CAS number: 68334-35-0
Surface tension
Administrative data
- Endpoint:
- surface tension
- Type of information:
- migrated information: read-across based on grouping of substances (category approach)
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP compliant, guideline study, no restrictions
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
- Report date:
- 2010
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
Test material
- Reference substance name:
- Rosin, hydrogenated
- EC Number:
- 266-041-3
- EC Name:
- Rosin, hydrogenated
- Cas Number:
- 65997-06-0
- Molecular formula:
- C20H30O2
- IUPAC Name:
- Hydrogenated rosin
- Details on test material:
- Test Substance Name Hydrogenated Rosin
CAS No. 65997-06-0
Supplied By Eastman Chemicals
Description Light amber pellets.
Constituent 1
Results and discussion
Surface tension
- Surface tension:
- 78 mN/m
- Temp.:
- 20 °C
- Conc.:
- 0 mg/L
Any other information on results incl. tables
Apparatus : Commercially available tensiometer.
Starting volume of water (ml) : 100
Mass added (mg) : 2.967
Calibration factor : 1.233
Solution age (min) : 1440 & 1445
Temperature (°C) : 20
Note
Measured value of the surface tension of water : ..59.0 mN.m-1
EC standard reading for surface tension of water : 72.75 mN.m-1
Calibration factor is:
72.75 = 1.233
59.0
| Test No. | Test Temp (°C) | Surface Tension Reading (mN/m) |
Corrected Value using calibration factor (mN/m) |
Corrected Value (mN/m) |
| 1 | 20 | 63.5 | 78.3 | 78.3 |
| 2 | 20 | 63.0 | 77.7 | 77.7 |
Result : 78.0 mN.m-1 (mean value)
Note
The calibration factor is determined by measuring the Surface Tension of water and comparing the value obtained in literature. The corrected
Applicant's summary and conclusion
- Conclusions:
- The following surface tension result was obtained: 78.0 mN.m-1 (mean of 2 runs)
- Executive summary:
Surface tension for Hydrogenated Rosin was measured by ring method according to the protocol in EU Regulation (EC) 440/2008 (test A5) and in compliance with GLP. A surface tension of 78 nN/m at 20°C was determined (mean of 2 runs).
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