Registration Dossier
Registration Dossier
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EC number: 233-297-2 | CAS number: 10108-73-3
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:
- from 31 JAN 2006 to 16 MAY 2006
- 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:
- yes (incl. QA statement)
- Type of method:
- ring method
- Key result
- Surface tension:
- 73.1 mN/m
- Temp.:
- 20.6 °C
- Conc.:
- 1 g/L
- Conclusions:
- The surface tension of cerium trinitrate in water was determined to be 73.1 mN/m at 20.6 °C. Therefore, the test item is considered not to be a surface active substance.
- Executive summary:
To determine the surface tension of the test item using a ring tensiometer, an aqueous solution was prepared by weighing 214.14 mg of test item in a 200 mL flask and filled up to the mark with double distilled water. After sonification for 4 minutes, the test item was completely dissolved. Thus, no further treatment was necessary. Recordings of surface tension were done on two samples of the test item solution, with six measurements per sample.
The surface tension of cerium trinitrate in water was determined to be 73.1 mN/m at 20.6 °C. Based on this result, the test item is not a surface active substance.
Reference
Determination of Surface Tension for the test item solution
Time expired (hours:min) |
Temperature (°C) |
Surface tension (mN/m) |
|||
measured |
Mean value calculated from the bold values (s*) |
Mean value corrected for calibration (s1) |
s1corrected for Harkins-Jordan
(s) |
||
First sample |
|||||
00:32 |
20.5 |
71.3 |
71.3 |
73.16 |
73.16 |
00:34 |
20.5 |
71.3 |
|||
00:35 |
20.5 |
71.3 |
|||
00:36 |
20.5 |
71.3 |
|||
00:37 |
20.5 |
71.3 |
|||
00:38 |
20.5 |
71.3 |
|||
Second sample |
|||||
00:35 |
20.6 |
71.3 |
71.28 |
73.14 |
73.14 |
00:37 |
20.6 |
71.3 |
|||
00:39 |
20.6 |
71.3 |
|||
00:40 |
20.6 |
71.3 |
|||
00:41 |
20.6 |
71.3 |
|||
00:42 |
20.6 |
71.2 |
|||
Mean value from both samples:s= 73.1 mN/m
With
s* .fb=s1
fb= calibration factor = 1.026
and
s1. Fc=s
Fc= factor for correction acc. to Harkins-Jordan
= 1.000 for 73.16 mN/m and 73.14 mN/m
Description of key information
The surface tension of cerium trinitrate in water was determined in a GLP study to be 73.1 mN/m at 20.6 °C using the ring method in accordance with EC test method A.5 (Weissenfeld, 2006).
Key value for chemical safety assessment
- Surface tension:
- 73.1
- in mN/m at 20°C and concentration in mg/L:
- 1 000
Additional information
The test item is not a surface active substance.
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.
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