Registration Dossier
Registration Dossier
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EC number: 610-992-2 | CAS number: 53378-52-2
Surface tension
Administrative data
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- August 18, 2011 - July 7, 2012
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 012
- Report date:
- 2012
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Deviations:
- yes
- Remarks:
- The instrument was calibrated using deionized water
- GLP compliance:
- no
- Type of method:
- ring method
Test material
- Reference substance name:
- Sodium O,O-diisobutyl phosphorothioate
- EC Number:
- 610-992-2
- Cas Number:
- 53378-52-2
- Molecular formula:
- C8 H18 O3 P S . Na
- IUPAC Name:
- Sodium O,O-diisobutyl phosphorothioate
- Test material form:
- other: grease-like solid
Constituent 1
- Specific details on test material used for the study:
- - Name of test material (as cited in study report): S10821; AERO® 6697 Promoter distilled
- Name: Sodium diisobutyl monothiophoshate
- CAS: 53378-52-2
- Molecular formula: C8H18O3PS.Na
- Molecular weight: 248.26
- Storage condition of test material: not indicated in the study report
- Batch no.: 20154-189-B
- Purity: 87.3%
Results and discussion
Surface tension
- Surface tension:
- >= 68.6 - <= 68.8 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Remarks on result:
- other: a clear solution of 1 g/L concentration of test substance was used for this investigation
Any other information on results incl. tables
Surface tension of 1 g/L test substance in water at 20 °C
Surface Tension of test solution #1 (mN/m) |
Surface Tension of test solution #2 (mN/m) |
Equilibrium Time from time of preparation |
68.7 |
68.7 |
4 hours |
68.8 |
68.7 |
4 hours, 5 minutes |
68.7 |
68.6 |
4.5 hours |
68.6 |
68.7 |
4.5 hours |
Applicant's summary and conclusion
- Conclusions:
- Considering that distilled water has a surface tension of 72.8 mN/m at 20 °C and that of the test substance was determined to be between 68.6 and 68.8 mN/m, under the conditions of a method similar to OECD 115 guideline, the test substance can be regarded as being a not surface active material.
- Executive summary:
Using the ring method, the surface tension of a 1 g/L sodium diisobutyl monothiophosphate solution at 20°C has been determined as 68.6 -68.8 mN/m. The substance is not surface active according to the criterium in the EC A.5 guideline.
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