Registration Dossier
Registration Dossier
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EC number: 236-419-2 | CAS number: 13360-78-6
Surface tension
Administrative data
Link to relevant study record(s)
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- 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:
- The OECD guideline refers to ISO Standard 304-1985 as a suitable method to follow.
- Deviations:
- yes
- Remarks:
- The OECD Guideline recommends double-distilled water. However, the ISO method it refers to states that one only needs to report the type of water used.
- Principles of method if other than guideline:
- The glassware and ring were cleaned in dilute sulfuric acid solution, water rinsed, and then flamed using a propane gas torch to remove any organic residue. The platinum ring was flamed to a bright orange color before each measurement. The method of cleaning used is satisfactory given the nature of the test solutions.
The cleaning process is slightly different from both the ISO and OECD Guideline. The ISO method reference calls for concentrated sulfuric acid followed by water and no flame. The OECD Guideline calls for chromo-sulfuric acid, followed by distilled water, and then methanol flame. - GLP compliance:
- not specified
- Type of method:
- ring method
- Specific details on test material used for the study:
- - Name of test material (as cited in study report): Aerophine 3418A Promoter, stripped
- IUPAC nomenclature - Sodium diisobutyldithiophosphinate
- Lot WEA102051
- Appearance - White powder with lumps
- CAS No. 13360-78-6
- Molecular Formula - C8H18PS2.Na
- Molecular Weight - 232 g/mole
- Purity > 99% - Surface tension:
- 44.5 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Remarks on result:
- other: shows no signs of time dependency
- Conclusions:
- The surface tension at 20.0°C is 44.5 mN/m
- Executive summary:
The surface tension of the test substance was measured at 1 g/L concentration in water. The surface tension at 20.0°C is 44.5 mN/m and shows no signs of time dependency.
Reference
Surface Tension of test solution #1 (mN/m) |
Surface Tension of test solution #2 (mN/m) |
Equilibrium Time from time of preparation |
44.5 |
44.5 |
4 hours |
44.6 |
44.5 |
4 hours, 5 minutes |
44.5 |
44.6 |
4.5 hours |
44.5 |
44.5 |
4.5 hours |
Description of key information
The surface tension at 20.0°C is 44.5 mN/m and shows no signs of time dependency.
Key value for chemical safety assessment
- Surface tension:
- 44.5
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
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