Registration Dossier
Registration Dossier
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EC number: 266-369-7 | CAS number: 66469-15-6
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:
- 2017
- 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)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- ring method
- Specific details on test material used for the study:
- Product description: Potassium isooctadecanoate/potassium isostearate
Name: Isooctadecanoic acid, potassium salt
CAS No.: 66469-15-6
Physical state: off white to yellowish solid at 20 °C
Batch No.: PFS-755-169
Re-certification date of batch: 12 December 2017
Purity: 100 % (UVCB)
pH, 10% in DI water 8.0 - 9.0
Stability: stable under test conditions
Storage condition of test material: Room temperature, protected from light - Key result
- Surface tension:
- 25.3 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Conclusions:
- The test item has a surface tension of 25.3 mN/m (c=approx. 1 g/l) in accordance with the test method EU A.5. "Surface Tension".
- Executive summary:
The test item has a surface tension of 25.3 mN/m (c=approx. 1 g/l) in accordance with the test method A.5. "Surface Tension" as described in the Commission Regulation (EC) No 440/2008 laying down test methods pursuant Regulation (EC) No 1907/2006 of the European Parliament and of the Council on the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH), also similar to OECD guideline for testing of chemicals OECD 115.
Reference
Water calibration:
Temp. = 21 °C
Density = 0.998 g/cm3
Arithmetic mean 71.5 mN/m, standard deviation 0.1 mN/m from 6 measurements (theoretical value: 72.4 mN/m -> correction factor 1.0126).
First test solution:
c = 1058 mg/l
Temp. = 21 °C
Density = 0.998 g/cm3,
Age of the solution: 115 min
Arithmetic mean 25.0 mN/m, standard deviation 0.1 mN/m from 6 measurements.
Second test solution:
c = 957 mg/l
Temp. = 21 °C
Density = 0.998 g/cm3
Age of the solution: 207 min
Arithmetic mean 25.0 mN/m, standard deviation 0.0 mN/m from 6 measurements
Description of key information
The test item has a surface tension of 25.3 mN/m (c=approx. 1 g/l) in accordance with the test method EU A.5. "Surface Tension".
Key value for chemical safety assessment
- Surface tension:
- 25.3
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
