Registration Dossier
Registration Dossier
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EC number: 230-949-8 | CAS number: 7381-01-3
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:
- 16 July 2013 - 23 August 2013
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Version / remarks:
- (2008)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Version / remarks:
- (1995)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- OECD harmonised ring method
- Surface tension:
- 33.5 mN/m
- Temp.:
- 20 °C
- Remarks on result:
- other: 90% of saturation test concentration used
- Conclusions:
- The surface tension of a 90% saturated aqueous solution of the substance has been determined as 33.5 mN/m at 20°C using the OECD Harmonized ring method (GLP-compliant study in accordance with EC A.5 and OECD 115). Because this is < 60 mN/m, the substance is surface active according to the EC A.5 guideline.
Reference
Surface tension measurements
Measurement |
Time passed [minutes] |
Surface tension [mN/m] |
||
individual |
Mean (1) |
Mean corrected (2) |
||
1 |
20 |
35.9 |
36.1 |
33.5 |
2 |
21 |
35.9 |
||
3 |
22 |
37.2 |
||
4 |
23 |
36.3 |
||
5 |
24 |
36.2 |
||
6 |
25 |
35.9 |
||
7 |
26 |
35.9 |
||
8 |
27 |
36.0 |
||
(1) Mean calculated from measurements 4 to 8.
(2) Multiplied by Φb followed by correction according to Harkins-Jordan.
Description of key information
The surface tension of a 90% saturated aqueous solution of the substance has been determined as 33.5 mN/m at 20°C using the OECD Harmonized ring method (GLP-compliant study in accordance with EC A.5 and OECD 115). Because this is < 60 mN/m, the substance is surface active according to the EC A.5 guideline.
Key value for chemical safety assessment
- Surface tension:
- 33.5
- in mN/m at 20°C and concentration in mg/L:
- 90
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.
