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EC number: 236-112-3 | CAS number: 13170-23-5
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:
- January 23, 2012.
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- According to EU Method A.5. GLP study.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
- Key result
- Surface tension:
- 24.2 mN/m
- Temp.:
- 20 °C
- Remarks on result:
- other: Test item used as such (purity specified on test report)
- Conclusions:
- The evaluated, after corrections, the value of Di(tert-butoxy)diacetoxysilane surface tension at 20°C was determined to be 24.2 mN/m.
- Executive summary:
The determination of surface tension was carried out using method EEC A.5: 1.6.4. OECD harmonized ring method. The surface tension (after corrections) of Di(tert-butoxy)diacetoxysilane at 20 ºC was determined to be 24.2 mN/m.
Reference
Measurement surface tension of di(tert-butoxy)diacetoxysilane surface tension at 20°C:
Measurement No |
1 |
2 |
3 |
4 |
5 |
time of test item transfer to measurement vessel, [min] |
0 |
10 |
20 |
30 |
40 |
test item surface tension, [mN/m] |
25.5 |
25.5 |
25.7 |
25.8 |
25.7 |
The average value of test item surface tension is: 25.6 ± 0.1 mN/m.
No distinct dependence of measured values of surface tension on the transfer time was observed.
The measured surface tension value was corrected by multiplying by the calibration factor Φb = 1.02.
Preliminary corrected value = Φ b x 25.6 = 1.02 x 25.6 = 26.1 mN/m
On the base of the polynomial equation the finally corrected value of test item surface tension was:
σ = -1.183 + 0.946·26.1 + 9.927·10-4·(26.1)2= 24.2 mN/m
Description of key information
Key study: EU Method A.5. GLP study. The surface tension (after corrections) of Di(tert-butoxy)diacetoxysilane at 20 ºC was determined to be 24.2 mN/m.
Key value for chemical safety assessment
- Surface tension:
- 24.2
Additional information
Key study: The determination of surface tension was carried out using method EEC A.5: 1.6.4. OECD harmonized ring method. The surface tension (after corrections) of Di(tert-butoxy)diacetoxysilane at 20 ºC was determined to be 24.2 mN/m.
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