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EC number: 283-392-8 | CAS number: 84605-29-8
Surface tension
Administrative data
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 14 May 2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: The study was perfomred according to guideline with one deviation that did not affect the integrity of the study.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
- Report date:
- 2010
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Deviations:
- yes
- Remarks:
- Result was not corrected using the Harkins-Jordan correction table as correction was not applicalbe to the apparatus used. Instrument gave a direct reading for surface tension within +/- 0.5mN/m. This deviation did not affect the integrity of the study.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Deviations:
- yes
- Remarks:
- Result was not corrected using the Harkins-Jordan correction table as correction was not applicalbe to the apparatus used. Instrument gave a direct reading for surface tension within +/- 0.5mN/m. This deviation did not affect the integrity of the study.
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Issued by- The Department of Health of the Government of the United Kingdom Issue date- 2009-11-26
- Type of method:
- ring method
Test material
- Reference substance name:
- Phosphorodithioic acid, mixed O,O-bis(1,3-dimethylbutyl and iso-Pr) esters, zinc salts
- EC Number:
- 283-392-8
- EC Name:
- Phosphorodithioic acid, mixed O,O-bis(1,3-dimethylbutyl and iso-Pr) esters, zinc salts
- Cas Number:
- 84605-29-8
- Molecular formula:
- Not applicable
- IUPAC Name:
- Phosphorodithioic acid, mixed O,O-bis(1,3-dimethylbutyl and iso-Pr) esters, zinc salts
- Details on test material:
- - Substance type: zinc coordination complex with alkyldithiophosphate ligands
-Analytical purity: 91 %
Constituent 1
Results and discussion
Surface tension
- Surface tension:
- 64.2 mN/m
- Temp.:
- 21 °C
- Conc.:
- 1.25 g/L
- Remarks on result:
- other: nominal concentration
Any other information on results incl. tables
Table 1. Determination of Calibration Factor (glass double-distilled water)
Reading (mN/m) |
Temperature0C |
Literature Value (mN/m) |
Calibration Factor |
72.0 |
21.0 |
72.57 |
1.008 |
72.5 |
21.0 |
72.57 |
1.001 |
72.0 |
21.0 |
72.57 |
1.008 |
72 |
21.0 |
72.57 |
1.008 |
72.0 |
21.0 |
72.57 |
1.008 |
72.5 |
21.0 |
72.57 |
1.001 |
Mean Calibration Factor = 1.006 |
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Table 2. Test Sample Surface Tension Measurements
Time (min) |
Reading (mN/m) |
Temperature0C |
mN/m * Calibration factor |
140 |
64.0 |
21.0 |
64.384 |
150 |
63.5 |
21.0 |
63.881 |
160 |
63.5 |
21.0 |
63.881 |
170 |
64.0 |
21.0 |
64.384 |
180 |
64.0 |
21.0 |
64.384 |
Mean Surface Tension (mN/m) = 64.2 |
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pH of sample solution = 5.3 |
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Applicant's summary and conclusion
- Conclusions:
- The surface tension of the substance is 64.2 mN/m. The substance is not a surface-active material.
- Executive summary:
The surface tension of the substance was determined according to EU Method A.5 using the ring method based on ISO 304.
The surface tension of the substance is 64.2 mN/m at 21 degrees C and the substance is not regarded as a surface-active material according to the guideline.
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